SEGMENT INFORMATION - Schedule of Reconciliation of Assets from Segment to Consolidated (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Segment Reporting Information [Line Items]
Total consolidated assets	$ 5,861,881	$ 5,694,307
Segment Balances Before Intersegment Eliminations and Consolidation Reconciling Items [Member]
Segment Reporting Information [Line Items]
Total consolidated assets	3,186,650	3,055,111
Segment Reconciling Items [Member]
Segment Reporting Information [Line Items]
Total consolidated assets	2,509,003	2,464,656
Eliminations and Unallocated in Consolidation [Member]
Segment Reporting Information [Line Items]
Total consolidated assets	$ 166,228	$ 174,540