Commitments and Contingencies (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Leases [Abstract]
Operating Leases, Rent Expense			$ 11,166	$ 12,745	$ 11,398
Operating Leases, Future Minimum Payments, Due 2016	$ 7,619		7,619
Operating Leases, Future Minimum Payments, Due 2017	4,445		4,445
Operating Leases, Future Minimum Payments, Due 2018	3,419		3,419
Operating Leases, Future Minimum Payments, Due 2019	2,315		2,315
Operating Leases, Future Minimum Payments, Due 2020	2,216		2,216
Operating Leases, Future Minimum Payments, Due Thereafter	9,469		9,469
Loss Contingencies [Line Items]
Assets	2,061,866		2,061,866	$ 2,073,885	$ 2,123,673
Contract Matters with Triumph [Member]
Loss Contingencies [Line Items]
Loss is period		$ 2,788
Assets	8,000		$ 8,000
Damages sought	$ 15,000