LEASES - Lease Maturities (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Leases [Abstract]
Remaining 2019	$ 8,623
2020	10,071
2021	9,217
2022	8,321
2023	8,285
Thereafter	154,382
Operating lease liabilities	198,899
Imputed interest	(93,224)
Balance at March 31, 2019	105,675
Less: Current portion	(10,666)
Non-current portion at March 31, 2019	$ 95,009	$ 0