Commitments and Contingencies (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2016
Loss Contingencies [Line Items]
Assets		$ 2,061,866		$ 2,075,023
Contract Matters with Triumph [Member]
Loss Contingencies [Line Items]
Charge related to a contract termination dispute			$ 2,788
Assets				$ 8,000
Damages sought	$ 12,000	$ 15,000
Triumph Counterclaim [Member]
Loss Contingencies [Line Items]
Damages sought	$ 23,000