COMMITMENTS AND CONTINGENCIES Operating Leases, Rent Expense, Minimum Rentals (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Commitments And Contingencies [Line Items]
Operating Leases, Rent Expense, Sublease Rentals	$ 5,893
2017	15,355
2018	13,181
2019	8,758
2020	5,506
2021	1,615
Thereafter	1,027
Total future minimum payments due	45,442
Office and general
Commitments And Contingencies [Line Items]
Operating leases, rent expense	$ 8,931	$ 10,540	$ 14,441
Property Subject to Operating Lease [Member]
Commitments And Contingencies [Line Items]
Lease Expiration Date	Dec. 31, 2027
Property Subject to Sublease [Member]
Commitments And Contingencies [Line Items]
Lease Expiration Date	Dec. 31, 2020