Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Common Stock	Additional Paid-in Capital	Retained Earnings	Total
Beginning balance at Dec. 31, 2015	$ 110	$ 24,738	$ 118,008	$ 142,856
Beginning balance, shares at Dec. 31, 2015	11,027,177
Tax shortfall associated with stock-based compensation arrangements		(50)		(50)
Restricted stock grants, net of forfeitures	$ 2	(2)
Restricted stock grants, net of forfeitures, shares	126,802
Stock-based compensation		2,891		2,891
Net income			12,420	12,420
Ending balance at Mar. 31, 2016	$ 112	27,577	130,428	158,117
Ending balance, shares at Mar. 31, 2016	11,153,979
Beginning balance at Dec. 31, 2016	$ 111	35,453	152,810	188,374
Beginning balance, shares at Dec. 31, 2016	11,093,489
Restricted stock grants, net of forfeitures	$ 1	(1)
Restricted stock grants, net of forfeitures, shares	66,395
Stock-based compensation		2,427		2,427
Common stock dividends			(2,853)	(2,853)
Net income			10,578	10,578
Ending balance at Mar. 31, 2017	$ 112	$ 37,879	$ 160,535	$ 198,526
Ending balance, shares at Mar. 31, 2017	11,159,884