CONSOLIDATED CONDENSED STATEMENTS OF COMPREHENSIVE INCOME (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
CONSOLIDATED CONDENSED STATEMENTS OF COMPREHENSIVE INCOME
Net income (loss)	$ 14,800	$ (1,203)
OTHER COMPREHENSIVE INCOME:
Foreign currency translation (net of tax of $(149) and $198)	(186)	323
Change in fair value of investments (net of tax of $77 and $154)	101	202
Change in fair value of interest rate swap (net of tax of $112 and $(420))	168	(685)
Realized loss on sale of investments recorded in net income (loss) (net of tax of $0 and $1,219)		2,005
Total other comprehensive income	83	1,845
TOTAL COMPREHENSIVE INCOME	$ 14,883	$ 642