CONSOLIDATED CONDENSED STATEMENT OF STOCKHOLDERS' EQUITY - 9 months ended Sep. 30, 2015 - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive (Loss) Income [Member]	Total
Balance at Dec. 31, 2014	$ 48,671	$ 1,025,941	$ 332,511	$ (41,618)	$ 1,365,505
Net income			36,580		36,580
Other comprehensive loss				(3,043)	(3,043)
TOTAL COMPREHENSIVE INCOME					33,537
Tax effect of stock-based compensation		(186)			(186)
Stock-based compensation expense		17,064			17,064
Issuance of common stock, net	402	284			686
Balance at Sep. 30, 2015	$ 49,073	$ 1,043,103	$ 369,091	$ (44,661)	$ 1,416,606