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	$ 3,116	$ 5,792
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	38,372	34,724
Loss on disposal of property, plant and equipment	39	4
Equity-based compensation expense	1,062	1,062
Excess tax benefits from equity-based compensation	(8)
Loss on early debt extinguishment	122
Equity in earnings of unconsolidated subsidiary	(75)	(109)
Noncontrolling interest in earnings		(130)
Dividends received	556	611
Deferred income taxes	(740)	100
Changes in operating assets/liabilities, net of acquisitions:
Trade and other accounts receivable	(41,351)	(35,347)
Parts and supplies inventory	(50)	(49)
Prepaids and other current assets	(2,548)	272
Accounts payable and accrued liabilities	12,294	46,049
Insurance accruals	(4,218)	(2,929)
Net cash provided by operating activities	6,571	50,050
Cash Flows from Investing Activities
Purchases of property, plant and equipment	(10,493)	(12,710)
Proceeds from sale of property, plant and equipment	197	73
Acquisition of businesses, net of cash received	(1,423)	(1,000)
Net change in insurance collateral	7,651	54,527
Other investing activities	(702)	(2,805)
Net cash (used in) provided by investing activities	(4,770)	38,085
Cash Flows from Financing Activities
EMSC issuance of class A common stock	691
Borrowings under senior secured term loan facility	150,000
Borrowings under ABL credit facility	45,000
Repayments of ABL credit facility and other debt	(173,672)	(3,649)
Debt issue costs	(4,411)	(95)
Proceeds from noncontrolling interest		2,704
Excess tax benefits from equity-based compensation	8
Net change in bank overdrafts	2,883	8,243
Net cash provided by financing activities	20,499	7,203
Change in cash and cash equivalents	22,300	95,338
Cash and cash equivalents, beginning of period	57,551	134,023
Cash and cash equivalents, end of period	$ 79,851	$ 229,361