CONSOLIDATED CONDENSED STATEMENT OF STOCKHOLDERS' EQUITY (UNAUDITED) (USD $) In Thousands, unless otherwise specified	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Loss [Member]	Total
Balance at Dec. 31, 2011	$ 47,329	$ 993,434	$ 402,679	$ (43,615)	$ 1,399,827
Net (Loss) Income	0	0	(1,203)	0	(1,203)
Other comprehensive income:
Foreign currency translation (net of tax of $198)	0	0	0	323	323
Change in fair value of investments (net of tax of $154)	0	0	0	202	202
Change in fair value of interest rate swap (net of tax of $420)	0	0	0	(685)	(685)
Realized loss on sale of investments recorded in Net (Loss) Income (net of tax of $1,219)	0	0	0	2,005	2,005
Total Comprehensive Income					642
Tax effect of stock-based compensation	0	(195)	0	0	(195)
Stock-based compensation expense	0	3,419	0	0	3,419
Issuance of common stock, net	39	(345)	0	0	(306)
Balance at Mar. 31, 2012	$ 47,368	$ 996,313	$ 401,476	$ (41,770)	$ 1,403,387