Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012
Cash flows from operating activities:
Consolidated net loss	$ (22,886)	$ (632)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation	41,675	39,673
Amortization of intangibles, deferred financing costs and bond premium	8,227	9,312
Non-cash write off of deferred financing cost	1,853
Provision for doubtful accounts	1,033	392
Provision for inventory obsolescence	95	182
Non-cash share-based compensation expense - net	195	2,150
Non-cash gain on trade-in of recalled equipment		(14,122)
Gain on sales and disposals of equipment	(801)	(695)
Deferred income taxes	676	(1,450)
Changes in operating assets and liabilities:
Accounts receivable	(321)	(9,372)
Inventories	(921)	(1,678)
Other operating assets	(792)	(2,001)
Accounts payable	(1,465)	(608)
Other operating liabilities	3,639	(3,477)
Net cash provided by operating activities	30,207	17,674
Cash flows from investing activities:
Medical equipment purchases	(28,478)	(32,082)
Property and office equipment purchases	(4,178)	(3,637)
Proceeds from disposition of property and equipment	1,929	3,935
Acquisitions, net of cash acquired		(11,445)
Holdback payment related to acquisition	(1,655)
Net cash used in investing activities	(32,382)	(43,229)
Cash flows from financing activities:
Proceeds under senior secured credit facility	43,300	72,000
Payments under senior secured credit facility	(36,800)	(39,000)
Payments of principal under capital lease obligations	(4,150)	(3,398)
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 noncontrolling interests	(379)	(373)
Proceeds from exercise of parent company stock options		150
Dividend and equity distribution payments		(763)
Payment of deferred financing costs	(4,102)
Change in book overdrafts	281	(727)
Net cash provided by financing activities	2,175	24,726
Net change in cash and cash equivalents		(829)
Cash and cash equivalents at the beginning of period		1,161
Cash and cash equivalents at the end of period		332
Supplemental cash flow information:
Interest paid	21,620	29,424
Income taxes paid	332	798
Non-cash activities:
Medical equipment purchases included in accounts payable (at end of period)	8,008	8,016
Capital lease additions	$ 4,438	$ 3,113