RESTATED QUARTERLY CONSOLIDATED STATEMENTS OF CASH FLOWS (Schedule of Restated Quarterly Consolidated Statements of Cash Flows) (Details) - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | 9 Months Ended | 12 Months Ended | |||||
|---|---|---|---|---|---|---|---|---|---|
Mar. 31, 2023 |
Mar. 31, 2022 |
Jun. 30, 2023 |
Jun. 30, 2022 |
Sep. 30, 2023 |
Sep. 30, 2022 |
Dec. 31, 2023 |
Dec. 31, 2022 |
Dec. 31, 2021 |
|
| CASH FLOWS FROM OPERATING ACTIVITIES | |||||||||
| Net Income Attributable to Common Shareowners | $ 13,709 | $ 6,938 | $ 27,883 | $ 14,198 | $ 40,539 | $ 23,803 | $ 52,258 | $ 33,412 | $ 33,396 |
| Adjustments to Reconcile Net Income to Cash From Operating Activities: | |||||||||
| Provision for Credit Losses | 3,099 | 32 | 5,296 | 1,724 | 7,689 | 3,878 | 9,714 | 7,494 | (1,553) |
| Depreciation | 1,969 | 1,907 | 3,927 | 3,802 | 5,920 | 5,689 | 7,918 | 7,596 | 7,607 |
| Amortization of Premiums, Discounts, and Fees, net | 1,067 | 2,610 | 2,117 | 5,053 | 3,216 | 6,618 | 4,221 | 7,772 | 14,072 |
| Amortization of Intangible Assets | 40 | 40 | 80 | 80 | 120 | 120 | 160 | 160 | 107 |
| Pension Settlement (Gain) Charges | 0 | 209 | (291) | 378 | (291) | 480 | (291) | 2,321 | 3,072 |
| Originations of Loans Held for Sale | (62,745) | (177,933) | (164,173) | (316,372) | (246,198) | (399,041) | (306,714) | (437,827) | (1,262,746) |
| Proceeds From Sales of Loans Held for Sale | 64,050 | 188,264 | 152,657 | 352,830 | 247,166 | 440,219 | 315,812 | 475,359 | 1,376,678 |
| Mortgage Banking Revenues | (2,871) | (4,055) | (6,234) | (8,912) | (8,072) | (11,807) | (10,400) | (11,909) | (52,425) |
| Net Additions for Capitalized Mortgage Servicing Rights | (91) | 364 | (253) | 360 | (392) | 570 | 419 | 726 | 72 |
| Stock Compensation | 536 | 245 | 764 | 489 | 1,110 | 904 | 1,237 | 1,630 | 843 |
| Net Tax Benefit from Stock Compensation | (19) | (19) | (19) | (48) | (27) | (4) | |||
| Deferred Income Taxes | (1,170) | (6,682) | (2,849) | (9,887) | (2,464) | (12,854) | (483) | (3,870) | (4,157) |
| Net Change in Operating Leases | (3) | (27) | (3) | (72) | (12) | (83) | 79 | (108) | (165) |
| Net Gain on Sales and Write-Downs of Other Real Estate Owned | (1,858) | 0 | (1,900) | (26) | (1,915) | (136) | (2,053) | (422) | (1,662) |
| Net (Increase) Decrease in Other Assets | (4,349) | 1,897 | 4,593 | 3,516 | 8,207 | 3,696 | (1,029) | (8,636) | 10,885 |
| Net (Decrease) Increase in Other Liabilities | 12,471 | 7,036 | 3,815 | 22,040 | 1,069 | 12,839 | (4,452) | 8,837 | (7,846) |
| Net Cash Provided By (Used In) Operating Activities | 23,854 | 20,826 | 25,429 | 69,182 | 55,692 | 74,876 | 66,351 | 82,508 | 115,924 |
| Securities Held to Maturity: | |||||||||
| Purchases | (194,448) | (218,548) | (219,865) | (1,483) | (219,865) | (251,525) | |||
| Payments, Maturities, and Calls | 8,820 | 14,441 | 18,992 | 28,111 | 28,159 | 40,096 | 36,600 | 55,314 | 78,544 |
| Securities Available for Sale: | |||||||||
| Purchases | (2,017) | (25,139) | (4,634) | (37,044) | (9,399) | (41,880) | (8,379) | (52,238) | (523,961) |
| Proceeds from the Sale of Securities | 0 | 3,365 | 0 | 3,365 | 30,420 | 3,365 | 30,420 | 3,365 | 495 |
| Payments, Maturities, and Calls | 16,559 | 24,824 | 32,490 | 47,413 | 53,045 | 64,301 | 62,861 | 81,596 | 178,425 |
| Purchases of Loans Held for Investment | (923) | (381) | (1,463) | (15,985) | (2,249) | (16,324) | (2,488) | (16,753) | (20,209) |
| Net (Increase) Decrease in Loans | (110,477) | (57,592) | (138,244) | (289,707) | (161,006) | (426,273) | (191,151) | (606,011) | 88,545 |
| Net Cash Paid for Acquisitions | 0 | 0 | (4,482) | ||||||
| Proceeds From Sales of Other Real Estate Owned | 2,699 | 0 | 3,772 | 30 | 3,840 | 1,683 | 3,995 | 2,406 | 4,502 |
| Purchases of Premises and Equipment, net | (1,886) | (1,013) | (3,851) | (3,322) | (5,459) | (4,013) | (7,046) | (6,322) | (5,193) |
| Noncontrolling Interest Contributions | 1,838 | 2,573 | 2,867 | 0 | 2,867 | 7,139 | |||
| Net Cash Used In Investing Activities | (87,225) | (234,105) | (92,938) | (483,114) | (62,649) | (596,043) | (80,110) | (755,641) | (447,720) |
| CASH FLOWS FROM FINANCING ACTIVITIES | |||||||||
| Net (Decrease) Increase in Deposits | (115,397) | 52,645 | (150,451) | 73,396 | (398,872) | 46,516 | (237,495) | 226,455 | 495,302 |
| Net (Decrease) Increase in Short-Term Borrowings | (30,161) | (3,692) | (6,120) | 4,784 | (15,097) | 17,592 | (21,452) | 22,114 | (45,938) |
| Repayment of Other Long-Term Borrowings | (50) | (78) | (99) | (150) | (149) | (200) | (199) | (249) | (1,332) |
| Dividends Paid | (3,064) | (2,712) | (6,121) | (5,424) | (9,518) | (8,307) | (12,905) | (11,191) | (10,459) |
| Payments to Repurchase Common Stock | (819) | (2,022) | (3,121) | (3,710) | 0 | 0 | |||
| Issuance of Common Stock Under Compensation Plans | 164 | 190 | 480 | 496 | 562 | 577 | 937 | 1,300 | 1,028 |
| Net Cash (Used in) Provided By Financing Activities | (149,327) | 46,353 | (164,333) | 73,102 | (426,195) | 56,178 | (274,824) | 238,429 | 438,601 |
| NET (DECREASE) INCREASE IN CASH AND CASH EQUIVALENTS | (212,698) | (166,926) | (231,842) | (340,830) | (433,152) | (464,989) | (288,583) | (434,704) | 106,805 |
| Cash and Cash Equivalents at Beginning of Year | 600,650 | 1,035,354 | 600,650 | 1,035,354 | 600,650 | 1,035,354 | 600,650 | 1,035,354 | 928,549 |
| Cash and Cash Equivalents at End of Year | 387,952 | 868,428 | 368,808 | 694,524 | 167,498 | 570,365 | 312,067 | 600,650 | 1,035,354 |
| Supplemental Cash Flow Disclosures: | |||||||||
| Interest Paid | 3,723 | 715 | 8,720 | 1,617 | 15,026 | 3,588 | 21,775 | 6,586 | 3,547 |
| Income Taxes Paid | 7,466 | 20 | 3,860 | 3,765 | 7,395 | 6,410 | 9,118 | 7,466 | 16,339 |
| Noncash Investing and Financing Activities: | |||||||||
| Loans and Premises Transferred to Other Real Estate Owned | 423 | 0 | 1,442 | 77 | 1,495 | 1,543 | 1,512 | 2,398 | 1,717 |
| As Previously Reported [Member] | |||||||||
| CASH FLOWS FROM OPERATING ACTIVITIES | |||||||||
| Net Income Attributable to Common Shareowners | 13,709 | 6,938 | 27,883 | 14,198 | 40,539 | 23,803 | 33,412 | 33,396 | |
| Adjustments to Reconcile Net Income to Cash From Operating Activities: | |||||||||
| Provision for Credit Losses | 3,099 | 32 | 5,296 | 1,724 | 7,689 | 3,878 | 7,494 | (1,553) | |
| Depreciation | 1,969 | 1,907 | 3,927 | 3,802 | 5,920 | 5,689 | 7,596 | 7,607 | |
| Amortization of Premiums, Discounts, and Fees, net | 1,067 | 2,610 | 2,117 | 5,053 | 3,216 | 6,618 | 7,772 | 14,072 | |
| Amortization of Intangible Assets | 40 | 40 | 80 | 80 | 120 | 120 | 160 | 107 | |
| Pension Settlement (Gain) Charges | 209 | (291) | 378 | (291) | 480 | 2,321 | 3,072 | ||
| Originations of Loans Held for Sale | (213,240) | (242,253) | (214,364) | (549,018) | (222,575) | (772,089) | (996,312) | (1,541,356) | |
| Proceeds From Sales of Loans Held for Sale | 214,545 | 252,584 | 202,848 | 585,476 | 223,543 | 813,267 | 1,033,844 | 1,655,288 | |
| Mortgage Banking Revenues | (2,871) | (4,055) | (6,234) | (8,912) | (8,072) | (11,807) | (11,909) | (52,425) | |
| Net Additions for Capitalized Mortgage Servicing Rights | (91) | 364 | (253) | 360 | (392) | 570 | 726 | 72 | |
| Stock Compensation | 536 | 245 | 764 | 489 | 1,110 | 904 | 1,630 | 843 | |
| Net Tax Benefit from Stock Compensation | (19) | (19) | (19) | (27) | (4) | ||||
| Deferred Income Taxes | (1,170) | (6,682) | (2,849) | (9,887) | (2,464) | (12,854) | (3,870) | (4,157) | |
| Net Change in Operating Leases | (3) | (27) | (3) | (72) | (12) | (83) | (108) | (165) | |
| Net Gain on Sales and Write-Downs of Other Real Estate Owned | (1,858) | (1,900) | (26) | (1,915) | (136) | (422) | (1,662) | ||
| Net (Increase) Decrease in Other Assets | (4,349) | 1,897 | 4,593 | 3,516 | 8,207 | 3,696 | (8,636) | 10,885 | |
| Net (Decrease) Increase in Other Liabilities | 12,471 | 7,036 | 3,815 | 22,040 | 1,069 | 12,839 | 8,837 | (7,846) | |
| Net Cash Provided By (Used In) Operating Activities | 23,854 | 20,826 | 25,429 | 69,182 | 55,692 | 74,876 | 82,508 | 115,924 | |
| Securities Held to Maturity: | |||||||||
| Purchases | (194,448) | (218,548) | (219,865) | (219,865) | (251,525) | ||||
| Payments, Maturities, and Calls | 8,820 | 14,441 | 18,992 | 28,111 | 28,159 | 40,096 | 55,314 | 78,544 | |
| Securities Available for Sale: | |||||||||
| Purchases | (2,017) | (25,139) | (4,634) | (37,044) | (9,399) | (41,880) | (52,238) | (523,961) | |
| Proceeds from the Sale of Securities | 3,365 | 3,365 | 30,420 | 3,365 | 3,365 | 495 | |||
| Payments, Maturities, and Calls | 16,559 | 24,824 | 32,490 | 47,413 | 53,045 | 64,301 | 81,596 | 178,425 | |
| Purchases of Loans Held for Investment | (121,029) | (26,713) | (201,000) | (174,779) | (295,360) | (329,481) | (438,415) | (114,913) | |
| Net (Increase) Decrease in Loans | 9,629 | (31,260) | 61,293 | (130,913) | 132,105 | (113,116) | (184,349) | 183,249 | |
| Net Cash Paid for Acquisitions | (4,482) | ||||||||
| Proceeds From Sales of Other Real Estate Owned | 2,699 | 3,772 | 30 | 3,840 | 1,683 | 2,406 | 4,502 | ||
| Purchases of Premises and Equipment, net | (1,886) | (1,013) | (3,851) | (3,322) | (5,459) | (4,013) | (6,322) | (5,193) | |
| Noncontrolling Interest Contributions | 1,838 | 2,573 | 2,867 | 2,867 | 7,139 | ||||
| Net Cash Used In Investing Activities | (87,225) | (234,105) | (92,938) | (483,114) | (62,649) | (596,043) | (755,641) | (447,720) | |
| CASH FLOWS FROM FINANCING ACTIVITIES | |||||||||
| Net (Decrease) Increase in Deposits | (115,397) | 52,645 | (150,451) | 73,396 | (398,872) | 46,516 | 226,455 | 495,302 | |
| Net (Decrease) Increase in Short-Term Borrowings | (30,161) | (3,692) | (6,120) | 4,784 | (15,097) | 17,592 | 22,114 | (45,938) | |
| Repayment of Other Long-Term Borrowings | (50) | (78) | (99) | (150) | (149) | (200) | (249) | (1,332) | |
| Dividends Paid | (3,064) | (2,712) | (6,121) | (5,424) | (9,518) | (8,307) | (11,191) | (10,459) | |
| Payments to Repurchase Common Stock | (819) | (2,022) | (3,121) | ||||||
| Issuance of Common Stock Under Compensation Plans | 164 | 190 | 480 | 496 | 562 | 577 | 1,300 | 1,028 | |
| Net Cash (Used in) Provided By Financing Activities | (149,327) | 46,353 | (164,333) | 73,102 | (426,195) | 56,178 | 238,429 | 438,601 | |
| NET (DECREASE) INCREASE IN CASH AND CASH EQUIVALENTS | (212,698) | (166,926) | (231,842) | (340,830) | (433,152) | (464,989) | (434,704) | 106,805 | |
| Cash and Cash Equivalents at Beginning of Year | 600,650 | 1,035,354 | 600,650 | 1,035,354 | 600,650 | 1,035,354 | 600,650 | 1,035,354 | 928,549 |
| Cash and Cash Equivalents at End of Year | 387,952 | 868,428 | 368,808 | 694,524 | 167,498 | 570,365 | 600,650 | 1,035,354 | |
| Supplemental Cash Flow Disclosures: | |||||||||
| Interest Paid | 3,723 | 715 | 8,720 | 1,617 | 15,026 | 3,588 | 6,586 | 3,547 | |
| Income Taxes Paid | 7,466 | 20 | 3,860 | 3,765 | 7,395 | 6,410 | 7,466 | 16,339 | |
| Noncash Investing and Financing Activities: | |||||||||
| Loans and Premises Transferred to Other Real Estate Owned | 423 | 1,442 | 77 | 1,495 | 1,543 | 2,398 | 1,717 | ||
| Restatement Impact [Member] | |||||||||
| CASH FLOWS FROM OPERATING ACTIVITIES | |||||||||
| Net Income Attributable to Common Shareowners | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
| Adjustments to Reconcile Net Income to Cash From Operating Activities: | |||||||||
| Provision for Credit Losses | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
| Depreciation | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
| Amortization of Premiums, Discounts, and Fees, net | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
| Amortization of Intangible Assets | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
| Pension Settlement (Gain) Charges | 0 | 0 | 0 | 0 | 0 | 0 | 0 | ||
| Originations of Loans Held for Sale | 150,495 | 64,320 | 50,191 | 232,646 | (23,623) | 373,048 | 558,485 | 278,610 | |
| Proceeds From Sales of Loans Held for Sale | (150,495) | (64,320) | (50,191) | (232,646) | 23,623 | (373,048) | (558,485) | (278,610) | |
| Mortgage Banking Revenues | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
| Net Additions for Capitalized Mortgage Servicing Rights | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
| Stock Compensation | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
| Net Tax Benefit from Stock Compensation | 0 | 0 | 0 | 0 | 0 | ||||
| Deferred Income Taxes | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
| Net Change in Operating Leases | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
| Net Gain on Sales and Write-Downs of Other Real Estate Owned | 0 | 0 | 0 | 0 | 0 | 0 | 0 | ||
| Net (Increase) Decrease in Other Assets | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
| Net (Decrease) Increase in Other Liabilities | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
| Net Cash Provided By (Used In) Operating Activities | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
| Securities Held to Maturity: | |||||||||
| Purchases | 0 | 0 | 0 | 0 | 0 | ||||
| Payments, Maturities, and Calls | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
| Securities Available for Sale: | |||||||||
| Purchases | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
| Proceeds from the Sale of Securities | 0 | 0 | 0 | 0 | 0 | 0 | |||
| Payments, Maturities, and Calls | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
| Purchases of Loans Held for Investment | 120,106 | 26,332 | 199,537 | 158,794 | 293,111 | 313,157 | 421,662 | 94,704 | |
| Net (Increase) Decrease in Loans | (120,106) | (26,332) | (199,537) | (158,794) | (293,111) | (313,157) | (421,662) | (94,704) | |
| Net Cash Paid for Acquisitions | 0 | ||||||||
| Proceeds From Sales of Other Real Estate Owned | 0 | 0 | 0 | 0 | 0 | 0 | 0 | ||
| Purchases of Premises and Equipment, net | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
| Noncontrolling Interest Contributions | 0 | 0 | 0 | 0 | 0 | ||||
| Net Cash Used In Investing Activities | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
| CASH FLOWS FROM FINANCING ACTIVITIES | |||||||||
| Net (Decrease) Increase in Deposits | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
| Net (Decrease) Increase in Short-Term Borrowings | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
| Repayment of Other Long-Term Borrowings | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
| Dividends Paid | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
| Payments to Repurchase Common Stock | 0 | 0 | 0 | ||||||
| Issuance of Common Stock Under Compensation Plans | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
| Net Cash (Used in) Provided By Financing Activities | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
| NET (DECREASE) INCREASE IN CASH AND CASH EQUIVALENTS | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
| Cash and Cash Equivalents at Beginning of Year | 0 | 0 | 0 | 0 | 0 | 0 | $ 0 | 0 | 0 |
| Cash and Cash Equivalents at End of Year | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
| Supplemental Cash Flow Disclosures: | |||||||||
| Interest Paid | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
| Income Taxes Paid | 0 | $ 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
| Noncash Investing and Financing Activities: | |||||||||
| Loans and Premises Transferred to Other Real Estate Owned | $ 0 | $ 0 | $ 0 | $ 0 | $ 0 | $ 0 | $ 0 | ||