CONSOLIDATED CONDENSED STATEMENT OF STOCKHOLDERS' EQUITY (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, 2013	$ 48,421	$ 1,007,918	$ 224,575	$ (33,379)	$ 1,247,535
Net income			80,214		80,214
Other comprehensive income/(loss)				65	65
TOTAL COMPREHENSIVE INCOME					80,279
Tax effect of stock-based compensation		656			656
Stock-based compensation expense		13,486			13,486
Issuance of common stock, net	225	(1,254)			(1,029)
Balance at Sep. 30, 2014	$ 48,646	$ 1,020,806	$ 304,789	$ (33,314)	$ 1,340,927