CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended				9 Months Ended
	Sep. 30, 2013		Sep. 30, 2012		Sep. 30, 2013		Sep. 30, 2012
Net revenue:
Managed care and other	$ 775,957		$ 711,092		$ 2,255,748		$ 2,114,149
Dispensing	97,641		87,345		282,359		262,974
Total net revenue	873,598		798,437		2,538,107		2,377,123
Cost and expenses:
Cost of care	570,187		516,238		1,642,944		1,543,361
Cost of goods sold	91,853		81,662		265,440		245,555
Direct service costs and other operating expenses	156,834	[1]	135,574	[1]	440,958	[1]	412,496	[1]
Depreciation and amortization	17,654		15,239		50,770		45,172
Interest expense	789		537		2,191		1,713
Interest income	(291)		(350)		(1,002)		(1,619)
Total cost and expenses	837,026		748,900		2,401,301		2,246,678
Income before income taxes	36,572		49,537		136,806		130,445
(Benefit) provision for income taxes	(10,660)		(16,725)		30,036		16,420
Net income	47,232		66,262		106,770		114,025
Net income per common share -basic (See Note B) (in dollars per share)	$ 1.75		$ 2.41		$ 3.96		$ 4.17
Net income per common share -diluted (See Note B) (in dollars per share)	$ 1.70		$ 2.36		$ 3.87		$ 4.10
Other comprehensive income:
Unrealized gains (losses) on available-for-sale securities	110	[2]	120	[2]	(37)	[2]	208	[2]
Comprehensive income	$ 47,342		$ 66,382		$ 106,733		$ 114,233

[1] Includes stock compensation expense of $4,468 and $4,524 for the three months ended September 30, 2012 and 2013, respectively, and $13,935 and $14,764 for the nine months ended September 30, 2012 and 2013, respectively.

[2] Net of income tax provision (benefit) of $78 and $74 for the three months ended September 30, 2012 and 2013, respectively, and $134 and $(25) for the nine months ended September 30, 2012 and 2013, respectively.