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, 2018	$ 442,701	$ 1,824	$ 76,774	$ 456,716	$ (23,454)	$ (69,159)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Unrealized gain (loss) on securities, net of tax	22,251	0	0	22,251	0	0
Other comprehensive income (loss)	19,172	0	0	0	19,172	0
Omnibus Equity Incentive Plan	401	2	399	0	0	0
Payments for Repurchase of Common Stock	(315)		0	0	0
Dividends, Common Stock, Cash	(6,390)	0	0	(6,390)	0	0
Balance at Jun. 30, 2019	477,820	1,826	77,173	472,577	(4,282)	(69,474)
Balance at Mar. 31, 2019	462,796	1,825	76,974	466,398	(12,927)	(69,474)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Unrealized gain (loss) on securities, net of tax	12,569	0	0	12,569	0	0
Other comprehensive income (loss)	8,645	0	0	0	8,645	0
Omnibus Equity Incentive Plan	200	1	199	0	0	0
Balance at Jun. 30, 2019	477,820	1,826	77,173	472,577	(4,282)	(69,474)
Balance at Dec. 31, 2019	557,608	2,005	139,694	492,055	(7,501)	(68,645)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Unrealized gain (loss) on securities, net of tax	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]
Unrealized gain (loss) on securities, net of tax	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)