Condensed Consolidated Statement of Changes in Stockholders’ Equity - 9 months ended Sep. 30, 2018 - USD ($) $ in Thousands	Common Stock	Additional Paid-in Capital	Retained Earnings	Common Stock Held in Treasury	Accumulated Other Comprehensive Income/(Loss)	Total
Balance at Dec. 31, 2017	$ 526	$ 250,216	$ 486,957	$ (353,067)	$ (21,397)	$ 363,235
Increase (Decrease) in Stockholders' Equity
Net income			1,571			1,571
Other comprehensive loss					(6,425)	(6,425)
Issuance of common stock in connection with restricted stock unit awards (1,098,993 shares)	1	(17,854)		18,106		253
Issuance of common stock for the employee stock purchase plan (30,769 shares)		523				523
Shares withheld for net settlements of share-based awards (429,560 shares)				(8,815)		(8,815)
Purchase of common stock for treasury (286,696 shares)				(5,814)		(5,814)
Dividends declared on common stock		13	(6,932)	73		(6,846)
Share-based compensation		20,427				20,427
Cumulative effect of accounting change			(46)			(46)
Balance at Sep. 30, 2018	$ 527	$ 253,325	$ 481,550	$ (349,517)	$ (27,822)	$ 358,063