Commitments and Contingencies (Details) (USD $)	3 Months Ended	6 Months Ended	3 Months Ended	6 Months Ended		23 Months Ended	0 Months Ended	1 Months Ended
	Jun. 30, 2013	Jun. 30, 2013	Jun. 30, 2013 Merion Capital, L.P	Jun. 30, 2013 Merion Capital, L.P	Apr. 15, 2013 Merion Capital, L.P	Mar. 10, 2010 AMR Predecessor item	Sep. 12, 2006 Violation of the federal anti-kickback statute AMR Predecessor	Sep. 30, 2006 Violation of the federal anti-kickback statute AMR Predecessor	May 31, 2011 Subpoena from the DOJ AMR	May 20, 2011 Subpoena from the DOJ AMR Predecessor
Commitments and Contingencies
Amount paid for settlement							$ 9,000,000
Term of CIA								5 years	5 years
Settlement amount to resolve the claims					52,100,000					2,700,000
Payment of dissenting shareholder settlement	13,717,000	13,717,000	13,700,000	13,700,000
Payment of dissenting shareholder settlement	38,336,000	38,336,000	38,300,000	38,300,000
Number of lawsuits purporting to be class actions filed						4
Legal settlement costs				8,400,000
Accrued interest included in reserve for unpaid merger consideration			$ 1,900,000	$ 1,900,000