CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2013		Mar. 31, 2012
Net revenue:
Managed care and other	$ 727,640		$ 686,059
Dispensing	94,121		87,154
Total net revenue	821,761		773,213
Cost and expenses:
Cost of care	529,931		505,293
Cost of goods sold	88,608		81,038
Direct service costs and other operating expenses	139,627	[1]	136,589	[1]
Depreciation and amortization	16,170		14,781
Interest expense	610		600
Interest income	(353)		(412)
Total cost and expenses	774,593		737,889
Income before income taxes	47,168		35,324
Provision for income taxes	19,110		14,534
Net income	28,058		20,790
Net income per common share -basic (See Note B) (in dollars per share)	$ 1.03		$ 0.76
Net income per common share-diluted (See Note B) (in dollars per share)	$ 1.01		$ 0.75
Other comprehensive income:
Unrealized gains (losses) on available-for-sale securities	(77)	[2]	173	[2]
Comprehensive income	$ 27,981		$ 20,963

[1] Includes stock compensation expense of $5,102 and $5,638 for the three months ended March 31, 2012 and 2013, respectively.

[2] Net of income tax provision (benefit) of $111 and $(52) for the three months ended March 31, 2012 and 2013, respectively.