Condensed Consolidated Statement of Stockholders' Equity Statement - USD ($) $ in Thousands	Total	Common Stock	Treasury Stock	Additional Paid-in-Capital	Accumulated Other Comprehensive Loss	Retained Earnings
Beginning balance (in shares) at Dec. 31, 2017		64,075,000	10,020,000
Total stockholders' equity - Beginning Balance at Dec. 31, 2017	$ 284,545	$ 6	$ (55,873)	$ 235,199	$ (19,229)	$ 124,442
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(1,983)					(1,983)
Total other comprehensive loss, net of tax	(2,243)				(2,243)
Comprehensive loss	(4,226)
Issuance of common stock upon exercise of stock awards (in shares)		297,000
Issuance of common stock upon exercise of stock awards	$ (388)			(388)
Acquisition of treasury shares (in shares)	2,667,732		2,668,000
Acquisition of treasury shares	$ (25,598)		$ (25,598)
Stock-based compensation expense	2,823			2,823
Ending balance (in shares) at Jun. 30, 2018		64,372,000	12,688,000
Total stockholders' equity - Ending Balance at Jun. 30, 2018	257,791	$ 6	$ (81,471)	237,634	(21,472)	123,094
Beginning balance (in shares) at Mar. 31, 2018		64,102,944	10,951,749
Total stockholders' equity - Beginning Balance at Mar. 31, 2018	279,654	$ 6	$ (64,544)	236,664	(15,865)	123,393
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(299)					(299)
Total other comprehensive loss, net of tax	(5,607)				(5,607)
Comprehensive loss	(5,906)
Issuance of common stock upon exercise of stock awards (in shares)		269,056
Issuance of common stock upon exercise of stock awards	$ (436)			(436)
Acquisition of treasury shares (in shares)	1,735,983		1,736,251
Acquisition of treasury shares	$ (16,927)		$ (16,927)
Stock-based compensation expense	1,406			1,406
Ending balance (in shares) at Jun. 30, 2018		64,372,000	12,688,000
Total stockholders' equity - Ending Balance at Jun. 30, 2018	257,791	$ 6	$ (81,471)	237,634	(21,472)	123,094
Beginning balance (in shares) at Dec. 31, 2018		64,495,000	12,688,000
Total stockholders' equity - Beginning Balance at Dec. 31, 2018	183,091	$ 6	$ (81,471)	239,960	(24,309)	48,905
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(3,631)					(3,631)
Total other comprehensive loss, net of tax	1,000				1,000
Comprehensive loss	(2,631)
Issuance of common stock upon exercise of stock awards (in shares)		134,000
Issuance of common stock upon exercise of stock awards	(91)			(91)
Stock-based compensation expense	2,141			2,141
Ending balance (in shares) at Jun. 30, 2019		64,629,000	12,688,000
Total stockholders' equity - Ending Balance at Jun. 30, 2019	182,669	$ 6	$ (81,471)	242,010	(23,309)	45,433
Beginning balance (in shares) at Mar. 31, 2019		64,534,000	12,688,000
Total stockholders' equity - Beginning Balance at Mar. 31, 2019	182,309	$ 6	$ (81,471)	240,734	(23,562)	46,602
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(1,169)					(1,169)
Total other comprehensive loss, net of tax	253				253
Comprehensive loss	(916)
Issuance of common stock upon exercise of stock awards (in shares)		95,000
Issuance of common stock upon exercise of stock awards	(126)			(126)
Stock-based compensation expense	1,402			1,402
Ending balance (in shares) at Jun. 30, 2019		64,629,000	12,688,000
Total stockholders' equity - Ending Balance at Jun. 30, 2019	$ 182,669	$ 6	$ (81,471)	$ 242,010	$ (23,309)	$ 45,433