CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY - USD ($) shares in Thousands, $ in Thousands	Common Stock	Additional Paid-In Capital	Accumulated Other Comprehensive Income (Loss)	Retained Earnings	Treasury Stock	Total
Balance at Dec. 31, 2013	$ 403	$ 291,414	$ (541)	$ 102,754	$ (68,016)	$ 326,014
Balance (in shares) at Dec. 31, 2013	40,299				(5,307)
Increase (Decrease) in Stockholders' Equity
Net loss				(707)		(707)
Other comprehensive loss			(1,457)			(1,457)
Tax deficiency from share-based compensation		(968)				(968)
Restricted common stock issued under share-based compensation plans	$ 5	1,712			$ 1,289	3,006
Restricted common stock issued under share-based compensation plans (in shares)	537				100
Stock option exercises		(1,536)			$ 11,932	10,396
Stock option exercises (in shares)					923
Common stock repurchased under share-based compensation plans					$ (3,982)	(3,982)
Common stock repurchased under share-based compensation plans (in shares)					(276)
Dividends declared ($0.27 per share)				(9,690)		(9,690)
Share-based compensation expense		4,904				4,904
Balance at Sep. 30, 2014	$ 408	295,526	(1,998)	92,357	$ (58,777)	327,516
Balance (in shares) at Sep. 30, 2014	40,836				(4,560)
Balance at Dec. 31, 2014	$ 408	294,054	(4,362)	88,391	$ (53,554)	324,937
Balance (in shares) at Dec. 31, 2014	40,836				(4,155)
Increase (Decrease) in Stockholders' Equity
Net loss				(20,688)		(20,688)
Other comprehensive loss			(3,568)			(3,568)
Tax benefit from share-based compensation		9				9
Restricted common stock issued under share-based compensation plans		(4,560)			$ 9,939	5,379
Restricted common stock issued under share-based compensation plans (in shares)					770
Stock option exercises		(107)			$ 3,428	3,321
Stock option exercises (in shares)					260
Common stock repurchased under share-based compensation plans					$ (4,151)	(4,151)
Common stock repurchased under share-based compensation plans (in shares)					(228)
Dividends declared ($0.27 per share)				(10,086)		(10,086)
Share-based compensation expense		5,205				5,205
Balance at Sep. 30, 2015	$ 408	$ 294,601	$ (7,930)	$ 57,617	$ (44,338)	$ 300,358
Balance (in shares) at Sep. 30, 2015	40,836				(3,353)