CONSOLIDATED CONDENSED STATEMENT OF STOCKHOLDERS' EQUITY (UNAUDITED) (USD $) In Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Loss [Member]	Total
Balance at Dec. 31, 2010	$ 47,090	$ 985,413	$ 316,531	$ (36,040)	$ 1,312,994
Net Income	0	0	62,100	0	62,100
Other comprehensive income (loss):
Foreign currency translation	0	0	0	(1,190)	(1,190)
Change in fair value of investments	0	0	0	595	595
Total comprehensive income					61,505
Tax effect of stock-based compensation	0	(80)	0	0	(80)
Stock-based compensation expense	0	6,820	0	0	6,820
Issuance of Common Stock, net	225	(269)	0	0	(44)
Balance at Sep. 30, 2011	$ 47,315	$ 991,884	$ 378,631	$ (36,635)	$ 1,381,195