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	(1,684)					(1,684)
Total other comprehensive loss, net of tax	3,364				3,364
Comprehensive loss	1,680
Issuance of common stock upon exercise of stock awards (in shares)		27,944
Issuance of common stock upon exercise of stock awards	$ 48	$ 0		48
Acquisition of treasury shares (in shares)	931,749		931,749
Acquisition of treasury shares	$ (8,671)		$ (8,671)
Stock-based compensation expense	1,417			1,417
Ending balance (in shares) at Mar. 31, 2018		64,102,944	10,951,749
Total stockholders' equity - Ending Balance at Mar. 31, 2018	279,654	$ 6	$ (64,544)	236,664	(15,865)	123,393
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	(2,462)					(2,462)
Total other comprehensive loss, net of tax	747				747
Comprehensive loss	(1,715)
Issuance of common stock upon exercise of stock awards (in shares)		38,600
Issuance of common stock upon exercise of stock awards	35	$ 0		35
Stock-based compensation expense	739			739
Ending balance (in shares) at Mar. 31, 2019		64,533,600	12,688,000
Total stockholders' equity - Ending Balance at Mar. 31, 2019	$ 182,309	$ 6	$ (81,471)	$ 240,734	$ (23,562)	$ 46,602