Condensed Consolidated Statement of Changes in Stockholders' Equity (USD $) In Thousands, unless otherwise specified	Common Stock	Additional Paid-in Capital	Retained Earnings	Common Stock Held in Treasury	Accumulated Other Comprehensive Income	Total
Balance at Dec. 31, 2014	$ 522	$ 240,135	$ 487,462	$ (306,629)	$ (5,894)	$ 415,596
Increase (Decrease) in Stockholders' Equity
Net income			16,733			16,733
Other comprehensive (loss)					(10,847)	(10,847)
Issuance of common stock in connection with employee stock option exercises (34,634 shares) and for restricted share awards (985,381 shares), including a net excess tax benefit of $2.7 million		(14,305)		17,563		3,258
Issuance of common stock for the employee stock purchase plan (35,693 shares)		558				558
Shares withheld for net settlement of share-based awards (365,474 shares)				(8,069)		(8,069)
Purchase of common stock for treasury (692,159 shares)				(16,425)		(16,425)
Share-based compensation		4,885				4,885
Balance at Mar. 31, 2015	$ 522	$ 231,273	$ 504,195	$ (313,560)	$ (16,741)	$ 405,689