CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Cumulative Effect, Period of Adoption, Adjustment	Common Stock	Additional Paid-In Capital and Accumulated Other Comprehensive Loss	Retained Earnings	Retained Earnings Cumulative Effect, Period of Adoption, Adjustment	2012 Equity Plan Common Stock
Accounting standards update [Extensible List]	Accounting Standards Update 2016-13 [Member]
Beginning balance (in shares) at Dec. 31, 2018			19,389,066
Beginning balance at Dec. 31, 2018	$ 274,554		$ 2	$ 89,258	$ 185,294
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(10,765)				(10,765)
Issuance of common stock under the employee stock purchase plan (in shares)			23,299
Issuance of common stock under the Employee Stock Purchase Plan	264			264
Issuance of common stock for vested restricted stock units under the 2012 equity plan (in shares)							233,507
Purchase of common stock for tax withholding (in shares)			(74,049)
Purchase of common stock for tax withholding	(1,017)			(1,017)
Amortization of stock-based compensation	3,643			3,643
Cash dividends declared	(9,864)				(9,864)
Common stock repurchase program including commissions (in shares)			(532,354)
Common stock repurchase program including commissions	(6,575)			(6,575)
Issuance of restricted stock under the equity plans (in shares)			32,145
Issuance of restricted stock under the Equity Plans	154				154
Cumulative translation adjustment	(300)			(300)
Ending balance (in shares) at Dec. 31, 2019			19,071,614
Ending balance at Dec. 31, 2019	250,094	$ (365)	$ 2	85,273	164,819	$ (365)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(44,225)				(44,225)
Issuance of common stock under the employee stock purchase plan (in shares)			35,661
Issuance of common stock under the Employee Stock Purchase Plan	300			300
Issuance of common stock for vested restricted stock units under the 2012 equity plan (in shares)							282,871
Purchase of common stock for tax withholding (in shares)			(79,981)
Purchase of common stock for tax withholding	(902)			(902)
Amortization of stock-based compensation	5,508			5,508
Cash dividends declared	(9,946)				(9,946)
Issuance of restricted stock under the equity plans (in shares)			74,027
Cumulative translation adjustment	149			149
Ending balance (in shares) at Dec. 31, 2020			19,384,192
Ending balance at Dec. 31, 2020	200,613		$ 2	90,328	110,283
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(22,180)				(22,180)
Issuance of common stock under the employee stock purchase plan (in shares)			16,015
Issuance of common stock under the Employee Stock Purchase Plan	132			132
Purchase of common stock for tax withholding (in shares)			(172,594)
Purchase of common stock for tax withholding	(1,860)			(1,860)
Amortization of stock-based compensation	7,239			7,239
Cash dividends declared	(10,117)				(10,117)
Issuance of restricted stock under the equity plans (in shares)			430,476
Issuance of common stock in lieu of cash compensation (in shares)			169,944
Cumulative translation adjustment	(136)			(136)
Ending balance (in shares) at Dec. 31, 2021			19,828,033
Ending balance at Dec. 31, 2021	$ 173,691		$ 2	$ 95,703	$ 77,986