CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Cash Flows from Operating Activities:
Net income	$ 2,133	$ 5,463
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	10,123	10,166
Provision for doubtful accounts	3,967	5,913
Non-cash compensation	2,056	2,482
401(k) employer match	2,240	2,347
Loss on disposal of property and equipment	211	505
Deferred income taxes	(1,287)	477
Equity in earnings of equity investments	(363)	(305)
Amortization of deferred debt issuance costs	193	394
Return on equity investment	400	150
Changes in operating assets and liabilities, net of impact of acquisitions:
Patient accounts receivable	20,545	(19,686)
Other current assets	(8,420)	1,335
Other assets	(517)	(39)
Accounts payable	(945)	(87)
Accrued expenses	1,990	2,051
Other long-term obligations	90	(239)
Net cash provided by operating activities	32,416	10,927
Cash Flows from Investing Activities:
Proceeds from sale of deferred compensation plan assets	71	230
Proceeds from the sale of property and equipment	61	0
Purchases of deferred compensation plan assets	(29)	(47)
Purchases of property and equipment	(10,074)	(10,236)
Purchase of Investment	(6,227)	0
Acquisitions of businesses, net of cash acquired	(627)	0
Net cash used in investing activities	(16,825)	(10,053)
Cash Flows from Financing Activities:
Proceeds from issuance of stock to employee stock purchase plan	837	962
Proceeds from revolving line of credit	12,500	0
Repayments of revolving line of credit	(12,500)	0
Principal payments of long-term obligations	(23,952)	(8,550)
Net cash used in financing activities	(23,115)	(7,588)
Net decrease in cash and cash equivalents	(7,524)	(6,714)
Cash and cash equivalents at beginning of period	14,545	48,004
Cash and cash equivalents at end of period	7,021	41,290
Supplemental Disclosures of Cash Flow Information:
Cash paid for interest	1,629	3,388
Cash paid for income taxes, net of refunds received	3,135	1,150
Supplemental Disclosures of Non-Cash Financing and Investing Activities
Acquired Noncontrolling Interest	$ 167	$ 0