Acquisitions and Dispositions (Details 7) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Discontinued operations, net of tax	$ 0	$ 0	$ 0	$ 0	$ 1,219	$ 5,983	$ 666	$ 447	$ 0	$ 8,315	$ (3,135)
Home Maker Services Agency Rehab Without Wallsand HME and IV [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net revenues										22,819	36,526
Income before income taxes										2,430	(2,991)
Gain on sale of business										11,475	(2,134)
Income tax expense										(5,590)	1,990
Discontinued operations, net of tax										$ 8,315	$ (3,135)