CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Current Assets:
Cash and cash equivalents	$ 203,187	$ 189,464
Restricted cash	236,696	226,554
Accounts receivable, less allowance for doubtful accounts of $4,612 and $5,447 at December 31, 2012 and 2013, respectively	238,185	138,253
Short-term investments (restricted investments of $88,332 and $117,674 at December 31, 2012 and 2013, respectively)	175,883	201,127
Deferred income taxes	37,530	31,698
Pharmaceutical inventory	49,609	45,727
Other current assets (restricted deposits of $20,846 and $25,009 at December 31, 2012 and 2013, respectively)	48,268	38,595
Total Current Assets	989,358	871,418
Property and equipment, net	172,333	136,548
Restricted long-term investments	32,430	32,563
Other long-term assets	7,197	9,730
Goodwill	488,206	426,939
Other intangible assets, net	69,694	34,935
Total Assets	1,759,218	1,512,133
Current Liabilities:
Accounts payable	42,853	17,081
Accrued liabilities	134,652	100,778
Medical claims payable	228,341	198,429
Other medical liabilities	67,416	76,914
Current maturities of long-term capital lease obligations	3,005
Total Current Liabilities	476,267	393,202
Long-term capital lease obligations	23,720
Deferred income taxes	42,046	34,086
Tax contingencies	32,343	60,697
Deferred credits and other long-term liabilities	17,803	6,815
Total Liabilities	592,179	494,800
Redeemable non-controlling interest	10,554
Preferred stock, par value $.01 per share Authorized - 10,000 shares at December 31, 2012 and 2013 - Issued and outstanding - none
Other Stockholders' Equity:
Additional paid-in capital	922,325	848,238
Retained earnings	1,100,493	975,232
Accumulated other comprehensive loss	(93)	(35)
Ordinary common stock in treasury, at cost, 18,575 shares and 19,735 shares at December 31, 2012 and 2013, respectively	(866,714)	(806,561)
Total Stockholders' Equity	1,156,485	1,017,333
Total Liabilities, Redeemable Non-Controlling Interest and Stockholders' Equity	1,759,218	1,512,133
Ordinary common stock
Current Liabilities:
Common stock	474	459
Multi-Vote common stock
Current Liabilities:
Common stock