Independent Contractor Operations (Narrative) (Details) (USD $) In Millions, unless otherwise specified				3 Months Ended
	Mar. 31, 2013	Dec. 31, 2012	Mar. 31, 2013 Roto-Rooter [Member]	Mar. 31, 2013 Maximum [Member]	Mar. 31, 2013 Minimum [Member]
Independent Contractor Operations [Line Items]
Independent contractors with sublicenses			66
Notes receivable from independent contractors	$ 1.3	$ 1.3
Interest rates on loans				8.00%	0.00%
Terms of the loans to independent contractors, years				5 years	2 months