CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
Current Assets:
Cash and cash equivalents	$ 119,862	$ 337,179
Restricted cash	185,794	116,734
Accounts receivable, less allowance for doubtful accounts of $1,985 and $3,336 at December 31, 2010 and 2011, respectively	121,606	106,934
Short-term investments (restricted investments of $114,903 and $129,599 at December 31, 2010 and 2011, respectively)	192,947	189,530
Deferred income taxes	35,138	28,439
Pharmaceutical inventory	39,567	27,910
Other current assets (restricted deposits of $21,302 and $20,453 at December 31, 2010 and 2011, respectively)	37,795	51,761
Total Current Assets	732,709	858,487
Property and equipment, net	118,022	111,814
Long-term investments (restricted investments of $84,950 and $7,956 at December 31, 2010 and 2011, respectively)	7,956	94,974
Deferred income taxes		825
Other long-term assets	10,952	2,396
Goodwill	426,939	426,939
Other intangible assets, net	44,589	53,997
Total Assets	1,341,167	1,549,432
Current Liabilities:
Accounts payable	18,690	31,878
Accrued liabilities	106,809	105,776
Medical claims payable	137,973	142,671
Other medical liabilities	106,078	109,285
Current maturities of long-term capital lease obligation		559
Total Current Liabilities	369,550	390,169
Deferred income taxes	18,509
Tax Contingencies	102,919	117,599
Deferred credits and other long-term liabilities	4,915	2,649
Total Liabilities	495,893	510,417
Preferred stock, par value $.01 per share Authorized - 10,000 shares - Issued and outstanding - none
Other Stockholders' Equity:
Additional paid-in capital	804,035	725,322
Retained earnings	824,205	694,582
Warrants outstanding		420
Accumulated other comprehensive income (loss)	(150)	9
Ordinary common stock in treasury, at cost, 9,905 shares and 18,112 shares at December 31, 2010 and 2011, respectively	(783,269)	(381,755)
Total Stockholders' Equity	845,274	1,039,015
Total Liabilities and Stockholders' Equity	1,341,167	1,549,432
Ordinary common stock
Current Liabilities:
Common stock	453	437
Multi-Vote common stock
Current Liabilities:
Common stock