Condensed Consolidated Statements of Changes in Shareholders’ Equity (Unaudited) - USD ($) $ in Thousands	Common Stock	Additional Paid-in Capital	Retained Earnings	Treasury Stock	Accumulated Other Comprehensive Income (Loss)	Total
Beginning balance at Dec. 31, 2016	$ 230	$ 278,501	$ 95,274	$ (15,446)	$ (922)	$ 357,637
Beginning balance, shares at Dec. 31, 2016	22,971,504			(909,432)
Net income			6,862			6,862
Dividends on common stock			(1,103)			(1,103)
Stock-based compensation expense		9				9
Other comprehensive income, net of tax					238	238
Ending balance at Mar. 31, 2017	$ 230	278,510	101,033	$ (15,446)	(684)	363,643
Ending balance, shares at Mar. 31, 2017	22,971,504			(909,432)
Beginning balance at Dec. 31, 2017	$ 257	343,249	118,353	$ (15,256)	(389)	446,214
Beginning balance, shares at Dec. 31, 2017	25,731,504			(898,272)
Net income			9,112			9,112
Dividends on common stock			(1,252)			(1,252)
Stock-based compensation expense		392				392
Other comprehensive income, net of tax					(2,895)	(2,895)
Ending balance at Mar. 31, 2018	$ 257	$ 343,641	$ 126,213	$ (15,256)	$ (3,284)	$ 451,571
Ending balance, shares at Mar. 31, 2018	25,731,504			(898,272)