Subsequent Events (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified			0 Months Ended		0 Months Ended
	Jun. 30, 2013	Dec. 31, 2012	Jul. 09, 2013 Subsequent Event [Member]	Jul. 12, 2013 Subsequent Event [Member]	Jul. 12, 2013 Platinum Health Services, LLC [Member] Subsequent Event [Member]
Subsequent Event [Line Items]
Cash payments to acquire business, gross					$ 3,800
Assumed debt in conjunction with acquisition					$ 1,200
Number of shares issued or issuable to acquiree					1,200
Company's common stock par value (dollars per share)	$ 0.01	$ 0.01		$ 0.01
Acquisition price paid per share (dollars per share)					$ 24.75
Period used to calculate average price of Company's shares			10 days
Average closing price of Company's shares (dollars per share)			$ 24.81