CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Cash Flows from Operating Activities:
Net (loss) income	$ (87,797)	$ 23,424
Adjustments to reconcile net income to net cash provided by operating activities:
U.S. Department Of Justice Settlement	150,000	0
Depreciation and amortization	28,730	30,046
Provision for doubtful accounts	12,853	16,286
Non-cash compensation	4,933	6,065
401(k) employer match	6,200	7,575
Loss on disposal of property and equipment	1,239	1,066
Gain on sale of care centers	(1,808)	0
Deferred income taxes	(53,611)	8,599
Write off intangible assets	3,828	0
Equity in earnings of equity investments	(1,054)	(1,091)
Amortization of deferred debt issuance costs	548	1,182
Return on equity investment	975	1,050
Changes in operating assets and liabilities, net of impact of acquisitions:
Patient accounts receivable	45,170	(31,686)
Other current assets	1,409	2,875
Other assets	(2,069)	(483)
Accounts payable	(8,111)	194
Accrued expenses	(11,198)	(10,815)
Other long-term obligations	3,625	(421)
Net cash provided by operating activities	93,862	53,866
Cash Flows from Investing Activities:
Proceeds from sale of deferred compensation plan assets	128	239
Proceeds from the sale of property and equipment	126	609
Purchases of deferred compensation plan assets	(93)	(155)
Purchases of property and equipment	(28,983)	(32,198)
Purchase of Investment	(9,732)	0
Acquisitions of businesses, net of cash acquired	(627)	(8,744)
Proceeds from dispositions of care centers	3,725	0
Net cash used in investing activities	(35,456)	(40,249)
Cash Flows from Financing Activities:
Proceeds from issuance of stock upon exercise of stock options and warrants	258	145
Proceeds from issuance of stock to employee stock purchase plan	2,436	2,934
Non-controlling interest distribution	(163)	(105)
Proceeds from revolving line of credit	25,500	0
Repayments of revolving line of credit	(25,500)	0
Principal payments of long-term obligations	(31,856)	(25,489)
Net cash used in financing activities	(29,325)	(22,515)
Net increase (decrease) in cash and cash equivalents	29,081	(8,898)
Cash and cash equivalents at beginning of period	14,545	48,004
Cash and cash equivalents at end of period	43,626	39,106
Supplemental Disclosures of Cash Flow Information:
Cash paid for interest	2,384	6,896
Cash paid for income taxes, net of refunds received	3,235	1,620
Supplemental Disclosures of Non-Cash Financing and Investing Activities
Notes payable issued for software licenses	0	2,214
Acquired Noncontrolling Interest	$ 312	$ 0