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
Cumulative Effect of New Accounting Principle in Period of Adoption | Accounting Standards Update 2014-09	$ 482					$ 482
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
Net loss	(1,684)					(1,684)
Net current-period other comprehensive income	3,364				3,364
Total other comprehensive income, net of tax	3,364
Comprehensive income	1,680
Issuance of common stock upon exercise of stock awards (in shares)		28,000
Issuance of common stock upon exercise of stock awards	$ 48	$ 0		48
Stock Repurchased During Period, Shares	931,749		932,000
Stock Repurchased During Period, Value	$ (8,671)		$ (8,671)
Stock-based compensation expense	1,417			1,417
Cumulative effect of change related to adoption of ASU 2016-16	153					153
Ending Balance (in shares) at Mar. 31, 2018		64,103,000	10,952,000
Total stockholders' equity - Ending Balance at Mar. 31, 2018	$ 279,654	$ 6	$ (64,544)	$ 236,664	$ (15,865)	$ 123,393