Condensed Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-In Capital & Accumulated Other Comprehensive Loss	Retained Earnings
Beginning balance (shares) at Dec. 31, 2017		20,135,514
Beginning balance at Dec. 31, 2017	$ 290,529	$ 2	$ 98,731	$ 191,796
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	345			345
Purchase of common stock for tax withholding (shares)		(56,269)
Purchase of common stock for tax withholding	(892)		(892)
Amortization of stock-based compensation	1,234		1,234
Cash dividends declared	(2,589)			(2,589)
Common stock repurchase program including commissions (shares)		(127,792)
Common stock repurchase program including commissions	(1,927)		(1,927)
Issuance of restricted stock under the Equity Plan and other (shares)		4,812
Cumulative translation adjustment	(256)		(256)
Ending balance (shares) at Mar. 31, 2018		19,956,265
Ending balance at Mar. 31, 2018	291,088	$ 2	96,890	194,196
Beginning balance (shares) at Dec. 31, 2017		20,135,514
Beginning balance at Dec. 31, 2017	290,529	$ 2	98,731	191,796
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(1,667)
Ending balance (shares) at Sep. 30, 2018		19,449,318
Ending balance at Sep. 30, 2018	278,388	$ 2	90,829	187,557
Beginning balance (shares) at Mar. 31, 2018		19,956,265
Beginning balance at Mar. 31, 2018	291,088	$ 2	96,890	194,196
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(1,172)			(1,172)
Amortization of stock-based compensation	1,267		1,267
Cash dividends declared	(2,539)			(2,539)
Common stock repurchase program including commissions (shares)		(501,782)
Common stock repurchase program including commissions	(7,540)		(7,540)
Issuance of restricted stock under the Equity Plan and other (shares)		17,766
Issuance of restricted stock under the Equity Plan and other	143		143
Cumulative translation adjustment	(342)		(342)
Ending balance (shares) at Jun. 30, 2018		19,472,249
Ending balance at Jun. 30, 2018	280,905	$ 2	90,418	190,485
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(840)			(840)
Purchase of common stock for tax withholding	(86)		(86)
Amortization of stock-based compensation	1,423		1,423
Cash dividends declared	(2,500)			(2,500)
Common stock repurchase program including commissions (shares)		(36,542)
Common stock repurchase program including commissions	(559)		(559)
Issuance of restricted stock under the Equity Plan and other (shares)		13,611
Cumulative translation adjustment	(367)		(367)
Prior period adjustments	412			412
Ending balance (shares) at Sep. 30, 2018		19,449,318
Ending balance at Sep. 30, 2018	278,388	$ 2	90,829	187,557
Beginning balance (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 income (loss)	742			742
Purchase of common stock for tax withholding (shares)		(67,648)
Purchase of common stock for tax withholding	(1,011)		(1,011)
Amortization of stock-based compensation	528		528
Cash dividends declared	(2,479)			(2,479)
Common stock repurchase program including commissions (shares)		(131,012)
Common stock repurchase program including commissions	(1,810)		(1,810)
Issuance of restricted stock under the Equity Plan and other (shares)		13,650
Issuance of restricted stock under the Equity Plan and other	70			70
Cumulative translation adjustment	(60)		(60)
Ending balance (shares) at Mar. 31, 2019		19,204,056
Ending balance at Mar. 31, 2019	270,534	$ 2	86,905	183,627
Beginning balance (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 income (loss)	(1,255)
Ending balance (shares) at Sep. 30, 2019		18,827,770
Ending balance at Sep. 30, 2019	260,797	$ 2	84,115	176,680
Beginning balance (shares) at Mar. 31, 2019		19,204,056
Beginning balance at Mar. 31, 2019	270,534	$ 2	86,905	183,627
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(670)			(670)
Amortization of stock-based compensation	1,029		1,029
Cash dividends declared	(2,480)			(2,480)
Issuance of restricted stock under the Equity Plan and other (shares)		17,910
Issuance of restricted stock under the Equity Plan and other	120		120
Cumulative translation adjustment	(33)		(33)
Ending balance (shares) at Jun. 30, 2019		19,221,966
Ending balance at Jun. 30, 2019	268,500	$ 2	88,021	180,477
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(1,326)			(1,326)
Amortization of stock-based compensation	964		964
Cash dividends declared	(2,471)			(2,471)
Common stock repurchase program including commissions (shares)		(401,342)
Common stock repurchase program including commissions	(4,765)		(4,765)
Issuance of restricted stock under the Equity Plan and other (shares)		7,146
Cumulative translation adjustment	(105)		(105)
Ending balance (shares) at Sep. 30, 2019		18,827,770
Ending balance at Sep. 30, 2019	$ 260,797	$ 2	$ 84,115	$ 176,680