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:
Consolidated net loss	$ (10,177)	$ (2,962)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation	20,450	19,574
Amortization of intangibles, deferred financing costs and bond premium	4,294	4,749
Non-cash write off of deferred financing cost	1,853
Provision for doubtful accounts	735	168
Provision for inventory obsolescence	115	55
Non-cash stock-based compensation expense - net	(196)	1,075
Non-cash gain on trade-in of recalled equipment		(1,356)
Gain on sales and disposals of equipment	(710)	(436)
Deferred income taxes	620	(2,279)
Changes in operating assets and liabilities:
Accounts receivable	(6,234)	(6,245)
Inventories	(702)	(1,244)
Other operating assets	54	(1,633)
Accounts payable	(384)	(1,692)
Other operating liabilities	(2,685)	16,256
Net cash provided by operating activities	7,033	24,030
Cash flows from investing activities:
Medical equipment purchases	(11,004)	(12,560)
Property and office equipment purchases	(2,322)	(1,639)
Proceeds from disposition of property and equipment	1,430	958
Holdback payment related to acquisition	(1,655)
Acquisitions, net of cash acquired		(11,445)
Net cash used in investing activities	(13,551)	(24,686)
Cash flows from financing activities:
Proceeds under senior secured credit facility	35,300	31,600
Payments under senior secured credit facility	(29,800)	(23,100)
Payments of principal under capital lease obligations	(1,304)	(1,813)
Payments of floating rate notes	(230,000)
Payments on acquired debt		(3,163)
Proceeds from issuance of bonds	234,025
Accrued interest received from bondholders	8,620
Accrued interest paid to bondholders	(8,620)
Distributions to non controlling interests	(199)	(182)
Contributions from new members to limited liability companies		17
Proceeds from exercise of parent company stock options		150
Dividend and equity distribution payments		(763)
Payment of deferred financing costs	(3,773)
Change in book overdrafts	2,269	(3,049)
Net cash provided by (used in) financing activities	6,518	(303)
Net change in cash and cash equivalents		(959)
Cash and cash equivalents at the beginning of period		1,161
Cash and cash equivalents at the end of period		202
Supplemental cash flow information:
Interest paid	20,909	965
Income taxes (refunded) paid	(33)	487
Non-cash activities:
Medical equipment purchases included in accounts payable (at end of period)	11,141	10,551
Capital lease additions	$ 439	$ 2,070