Condensed Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Cash flows from operating activities:
Net income (loss)	$ 13,041	$ (12,511)
Adjustments to reconcile net income to net cash provided by operating activities:
Loss from sale of discontinued operations (Note 4)	0	2,824
U.S. Government inquiry settlement (Note 17)	0	33,000
Depreciation and amortization	8,862	7,764
Amortization of deferred financing fees and debt discount	205	206
Deferred income taxes	17	(121)
Provision for doubtful accounts	3,405	2,973
Share-based compensation	1,179	991
Excess tax benefit from share-based compensation	(688)	(497)
Loss (gain) on disposition of property and equipment	(1)	1,143
Change in operating assets and liabilities
Accounts receivable	(12,604)	(7,071)
Prepaid income taxes	7,250	(4,613)
Prepaid expenses and other current assets	215	25
Insurance subsidiary deposits and investments	150	196
Accounts payable	2,829	(4,860)
Accrued wages and related liabilities	651	(1,905)
Other accrued liabilities	(1,432)	2,655
Accrued self-insurance	(1,633)	1,681
Deferred rent liability	(14)	(198)
Net cash provided by operating activities	21,432	21,682
Cash flows from investing activities:
Purchase of property and equipment	(16,424)	(5,216)
Cash payment for business acquisitions	(9,148)	(10,646)
Escrow deposits	(3,252)	(7,843)
Escrow deposits used to fund business acquisitions	1,000	4,635
Cash proceeds from the sale of property and equipment	1	102
Restricted and other assets	(262)	(177)
Net cash used in investing activities	(28,085)	(19,145)
Cash flows from financing activities:
Payments on long term debt	(1,849)	(1,793)
Issuance of treasury stock upon exercise of options	94	34
Issuance of common stock upon exercise of options	998	1,294
Dividends paid	(1,564)	0
Excess tax benefit from share-based compensation	688	497
Payments of deferred financing costs	0	(718)
Net cash used in financing activities	(1,633)	(686)
Net (decrease) increase in cash and cash equivalents	(8,286)	1,851
Cash and cash equivalents beginning of period	65,755	40,685
Cash and cash equivalents end of period	57,469	42,536
Cash paid during the period for:
Interest	3,369	3,094
Income taxes	158	160
Non-cash financing and investing activity:
Accrued capital expenditures	$ 1,793	$ 1,997