CONSOLIDATED STATEMENT OF STOCKHOLDERS' EQUITY (Unaudited) - 6 months ended Jun. 30, 2016 - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock [Member]	Additional Paid-In Capital [Member]	Treasury Stock [Member]	Retained Earnings [Member]
Balance at Dec. 31, 2015	$ 172,455	$ 308	$ 144,701	$ (205,325)	$ 232,771
Purchase of treasury stock, at cost	(4,790)	0	0	(4,790)	0
Repurchase of common stock	(144,263)	(31)	(144,232)	0	0
Stock-based compensation expense	8,336	0	3,689	4,647	0
Other	720	0	270	450	0
Dividends paid	(9,997)	0	0	0	(9,997)
Net income	42,406	0	0	0	42,406
Balance at Jun. 30, 2016	$ 64,867	$ 277	$ 4,428	$ (205,018)	$ 265,180
Balance (shares) at Dec. 31, 2015		30,758
Repurchase of common stock (shares)		(3,014)
Dividends paid (shares)	0
Balance (shares) at Jun. 30, 2016		27,744