Consolidated Statements of Stockholders' Equity (Unaudited) - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Retained Earnings
Beginning balance (in shares) at Dec. 31, 2018		16,424,785
Beginning balance at Dec. 31, 2018	$ 321,266	$ 164	$ 187,172	$ 133,930
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock under employee benefit plans (in shares)		244,589
Issuance of common stock under employee benefit plans	0	$ 3	(3)
Deemed repurchased shares of common and restricted stock for tax withholding (in shares)		(83,214)
Deemed repurchased shares of common and restricted stock for tax withholding	(2,513)	$ (1)	(2,512)
Stock-based compensation	1,689		1,689
Net income	1,011			1,011
Ending balance (in shares) at Mar. 31, 2019		16,586,160
Ending balance at Mar. 31, 2019	321,453	$ 166	186,346	134,941
Beginning balance (in shares) at Dec. 31, 2019		15,177,864
Beginning balance at Dec. 31, 2019	296,733	$ 152	190,620	105,961
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock under employee benefit plans (in shares)		224,382
Issuance of common stock under employee benefit plans	0	$ 2	(2)
Deemed repurchased shares of common and restricted stock for tax withholding (in shares)		(73,452)
Deemed repurchased shares of common and restricted stock for tax withholding	(1,946)	$ (1)	(1,945)
Stock-based compensation	1,750		1,750
Repurchased and retired shares of common stock (in shares)		(547,563)
Repurchased and retired shares of common stock	(13,608)	$ (5)		(13,603)
Net income	2,420			2,420
Ending balance (in shares) at Mar. 31, 2020		14,781,231
Ending balance at Mar. 31, 2020	$ 285,349	$ 148	$ 190,423	$ 94,778