Acquisition - Preliminary Allocation of Purchase Consideration (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2014	Dec. 31, 2015	Dec. 31, 2014	Jul. 12, 2013
Purchase Price Allocation
Goodwill		$ 44,438	$ 44,438
Platinum Health Services, LLC
Purchase Price Allocation
Fair value of assets acquired, net of liabilities assumed				$ 1,983
Goodwill				27,483
Intangible assets				21,300
Net assets acquired				50,766
Adjustments
Fair value of assets acquired, net of liabilities assumed	$ (621)
Goodwill	4,255
Intangible assets	300
Net assets acquired	$ 3,934
Preliminary | Platinum Health Services, LLC
Purchase Price Allocation
Fair value of assets acquired, net of liabilities assumed				2,604
Goodwill				23,228
Intangible assets				21,000
Net assets acquired				$ 46,832