Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Cash flows from operating activities:
Consolidated net loss	$ (3,260)	$ (6,146)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation	19,574	19,296
Amortization of intangibles, deferred financing costs and bond premium	4,749	4,035
Provision for doubtful accounts	168	164
Provision for inventory obsolescence	55	22
Non-cash stock-based compensation expense	1,075	1,098
Non-cash gain on trade-in of recalled equipment	(1,356)	(710)
Gain on sales and disposals of equipment	(436)	(302)
Deferred income taxes	(2,279)	2,941
Changes in operating assets and liabilities:
Accounts receivable	(6,245)	(29)
Inventories	(1,244)	34
Other operating assets	(1,633)	(493)
Accounts payable	(1,692)	(1,590)
Other operating liabilities	16,554	6,862
Net cash provided by operating activities	24,030	25,182
Cash flows from investing activities:
Medical equipment purchases	(12,560)	(25,188)
Property and office equipment purchases	(1,639)	(1,833)
Proceeds from disposition of property and equipment	958	538
Acquisitions, net of cash acquired	(11,445)
Net cash used in investing activities	(24,686)	(26,483)
Cash flows from financing activities:
Proceeds under senior secured credit facility	31,600	21,500
Payments under senior secured credit facility	(23,100)	(20,200)
Payments of principal under capital lease obligations	(1,813)
Payoff of acquired debt	(3,163)	(1,090)
Distributions to non controlling interests	(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)
Change in book overdrafts	(3,049)	1,091
Net cash provided by (used by) financing activities	(303)	1,301
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	965	1,090
Income taxes paid	487	87
Non-cash activities:
Medical equipment purchases included in accounts payable (at end of period)	10,551	13,533
Capital lease additions	$ 2,070	$ 1,150