Commitments and Contingencies - Litigation (Details) $ in Millions		12 Months Ended
	Jan. 08, 2013 item	Dec. 31, 2015 USD ($)
Professional liability claims
Commitments and Contingencies
Self insurance retention per occurrence		$ 2.0
General liability claims
Commitments and Contingencies
Self insurance retention per occurrence		$ 2.0
Amended complaint | SSH-Evansville
Commitments and Contingencies
Number of case managers identified as plaintiff | item	2