CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Cumulative Effect of Change in Accounting Principles (See Note 2 - Recent Accounting Pronouncements)	Balance, January 1, 2020	Common Stock	Common Stock Balance, January 1, 2020	Additional Paid-in Capital	Additional Paid-in Capital Balance, January 1, 2020	Retained Earnings	Retained Earnings Cumulative Effect of Change in Accounting Principles (See Note 2 - Recent Accounting Pronouncements)	Retained Earnings Balance, January 1, 2020	Accumulated Other Comprehensive Income (Loss)	Accumulated Other Comprehensive Income (Loss) Balance, January 1, 2020
Beginning Balances (in shares) at Dec. 31, 2019				26,671,368	26,671,368
Beginning Balances at Dec. 31, 2019	$ 573,820	$ (6,717)	$ 567,103	$ 26,671	$ 26,671	$ 278,954	$ 278,954	$ 253,090	$ (6,717)	$ 246,373	$ 15,105	$ 15,105
Increase (Decrease) in Stockholders' Equity [Roll Forward]
NET INCOME	12,472							12,472
Other Comprehensive Income	13,255										13,255
Cash Dividends	(5,065)							(5,065)
Issuance of Common Stock for:
Restricted Share Grants (in shares)				41,752
Restricted Share Grants	270			$ 42		228
Stock Repurchase (in shares)				(173,089)
Stock Repurchase	(4,495)			$ (173)		(4,322)
Ending Balances (in shares) at Mar. 31, 2020				26,540,031
Ending Balances at Mar. 31, 2020	583,540			$ 26,540		274,860		253,780			28,360
Beginning Balances (in shares) at Dec. 31, 2020				26,502,157
Beginning Balances at Dec. 31, 2020	624,709			$ 26,502		274,385		288,447			35,375
Increase (Decrease) in Stockholders' Equity [Roll Forward]
NET INCOME	19,557							19,557
Other Comprehensive Income	(21,828)										(21,828)
Cash Dividends	(5,554)							(5,554)
Issuance of Common Stock for:
Restricted Share Grants (in shares)				44,123
Restricted Share Grants	329			$ 44		285
Ending Balances (in shares) at Mar. 31, 2021				26,546,280
Ending Balances at Mar. 31, 2021	$ 617,213			$ 26,546		$ 274,670		$ 302,450			$ 13,547