Acquisitions (Assets Acquired and Liabilities Assumed) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013	May 08, 2014 CorrectMed	Aug. 29, 2014 Bay Walk-In Clinic, Inc.	Sep. 12, 2014 Mid-South Urgent Care, Inc.	Sep. 30, 2014 Series of Individually Material Business Acquisitions [Member]
Business Acquisition [Line Items]
Accounts receivable			$ 221	$ 153	$ 147	$ 521
Other current assets			27	0	25	52
Fixed assets			1,124	35	178	1,337
Identifiable intangible assets			297	357	408	1,062
Goodwill	4,822	0	1,948	1,690	1,184	4,822
Total assets acquired			3,617	2,235	1,942	7,794
Other liabilities assumed			(937)	(77)	(442)	(1,456)
Total assets acquired and liabilities assumed			$ 2,680	$ 2,158	$ 1,500	$ 6,338