Annual report pursuant to Section 13 and 15(d)

EMPLOYEE BENEFIT PLANS (Details)

v3.8.0.1
EMPLOYEE BENEFIT PLANS (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Change in Projected Benefit Obligation:      
Actuarial Loss (Gain) $ 3,470 $ 9,958 $ 4,975
Components of Net Periodic Benefit Costs:      
Amortization of Prior Service Costs 223 278 316
Net Loss Amortization (4,409) (3,960) (3,743)
Net Periodic Benefit Cost 1,162 (5,720) (916)
Defined benefit pension plan [Member]      
Change in Projected Benefit Obligation:      
Benefit Obligation at Beginning of Year 152,585 141,039 140,359
Service Cost 6,752 6,453 6,859
Interest Cost 5,750 5,587 5,750
Actuarial Loss (Gain) 10,877 9,118 (6,880)
Benefits Paid (10,541) (9,412) (4,825)
Expenses Paid (339) (200) (224)
Projected Benefit Obligation at End of Year 165,084 152,585 141,039
Change in Plan Assets:      
Fair Value of Plan Assets at Beginning of Year 113,813 105,792 108,172
Actual Return on Plan Assets 16,786 7,633 (2,331)
Employer Contributions 10,000 10,000 5,000
Benefits Paid (10,541) (9,412) (4,825)
Expenses Paid (339) (200) (224)
Fair Value of Plan Assets at End of Year 129,719 113,813 105,792
Funded Status of Plan and Accrued Liability Recognized at End of Year:      
Other Liabilities 35,365 38,772 35,247
Accumulated Benefit Obligation at End of Year 144,139 130,109 121,609
Components of Net Periodic Benefit Costs:      
Service Cost 6,752 6,453 6,859
Interest Cost 5,750 5,587 5,750
Expected Return on Plan Assets (8,026) (7,736) (7,820)
Amortization of Prior Service Costs 223 278 309
Net Loss Amortization 3,812 3,201 3,564
Net Periodic Benefit Cost $ 8,511 $ 7,783 $ 8,662
Weighted-average assumptions used to determine benefit obligations:      
Discount Rate (in percent) 3.71% 4.21% 4.52%
Rate of Compensation Increase (in percent) 3.25% 3.25% 3.25%
Measurement Date Dec. 31, 2017 Dec. 31, 2016 Dec. 31, 2015
Weighted-Average Assumptions Used to Determine Benefit Cost:      
Discount Rate (in percent) 4.21% 4.52% 4.15%
Expected Return on Plan Assets (in percent) 7.25% 7.50% 7.50%
Rate of Compensation Increase (in percent) 3.25% 3.25% 3.25%
Amortization Amounts from Accumulated Other Comprehensive Income:      
Net Actuarial Loss $ 2,117 $ 9,221 $ 3,272
Prior Service Cost (223) (278) (309)
Net Loss (3,812) (3,201) (3,564)
Deferred Tax Benefit 5,898 (2,216) 232
Other Comprehensive Loss, net of tax 3,980 3,526 (369)
Amounts Recognized in Accumulated Other Comprehensive Income:      
Net Actuarial Losses 38,698 40,392 34,373
Prior Service Cost 265 488 766
Deferred Tax Liability (Benefit) (9,876) (15,772) (13,556)
Accumulated Other Comprehensive Loss (Gain), net of tax $ 29,087 $ 25,108 $ 21,583