OTHER COMPREHENSIVE INCOME (Tables)  | 
3 Months Ended | 
|---|---|
Mar. 31, 2021  | |
| Other comprehensive income [Abstract] | |
| Schedule of activity in accumulated other comprehensive loss, net of tax | 
 Accumulated  
Securities  
Other  
Available  
Interest Rate  
Retirement  
Comprehensive  
(Dollars in Thousands) 
Swap  
Plans  
Balance as of January 1, 2021  
$  
2,700 
$  
428 
$  
(47,270) 
$  
(44,142) 
Other comprehensive income during the period 
(1,458) 
1,587 
142 
271 
Balance as of March 31, 2021  
$  
1,242 
$  
2,015 
$  
(47,128) 
$  
(43,871) 
Balance as of January 1, 2020  
$  
864 
$  
- 
$  
(29,045) 
$  
(28,181) 
Other comprehensive income during the period 
2,648 
- 
- 
2,648 
Balance as of March 31, 2020  
$  
3,512 
$  
- 
$  
(29,045) 
$  
(25,533) 
 | 
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- References No definition available. 
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- Definition Tabular disclosure of the components of accumulated other comprehensive income (loss). Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef 
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