CONSOLIDATED STATEMENTS OF SHAREHOLDERS’ EQUITY - USD ($) $ in Thousands	Total	Common Stock [Member]	Additional Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income/(Loss) [Member]	Treasury Stock [Member]
Balance at Dec. 31, 2019	$ 557,608	$ 2,005	$ 139,694	$ 492,055	$ (7,501)	$ (68,645)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	24,105	0	0	24,105	0	0
Other comprehensive income (loss)	17,016	0	0	0	17,016	0
Omnibus Equity Incentive Plan	410	1	409	0	0	0
Payments for Repurchase of Common Stock	(1,724)		0	0	0
Dividends, Common Stock, Cash	(7,131)	0	0	(7,131)	0	0
Balance at Jun. 30, 2020	590,284	2,006	140,103	509,029	9,515	(70,369)
Balance at Mar. 31, 2020	581,771	2,005	139,898	504,236	6,001	(70,369)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	11,924	0	0	11,924	0	0
Other comprehensive income (loss)	3,514	0	0	0	3,514	0
Omnibus Equity Incentive Plan	206	1	205	0	0	0
Balance at Jun. 30, 2020	590,284	2,006	140,103	509,029	9,515	(70,369)
Balance at Dec. 31, 2020	596,992	2,007	140,820	521,103	9,764	(76,702)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	29,491	0	0	29,491	0	0
Other comprehensive income (loss)	(8,352)	0	0	0	(8,352)	0
Omnibus Equity Incentive Plan	421	1	420	0	0	0
Payments for Repurchase of Common Stock	(23,390)		0	0	0
Dividends, Common Stock, Cash	(6,999)	0	0	(6,999)	0	0
Balance at Jun. 30, 2021	588,163	2,008	141,240	543,595	1,412	(100,092)
Balance at Mar. 31, 2021	598,112	2,008	141,024	533,980	(832)	(78,068)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	16,614	0	0	16,614	0	0
Other comprehensive income (loss)	2,244	0	0	0	2,244	0
Omnibus Equity Incentive Plan	216	0	216	0	0	0
Balance at Jun. 30, 2021	$ 588,163	$ 2,008	$ 141,240	$ 543,595	$ 1,412	$ (100,092)