LEASES - Lease Future Annual Payments (Details) $ in Thousands	Jun. 30, 2019 USD ($)
Finance Lease, Liability, Payment, Due [Abstract]
2019 (excluding the six months ended June 30, 2019)	$ 3,874
2020	7,173
2021	5,853
2022	5,824
2023	5,282
Thereafter	2,884
Total future minimum lease payments	30,890
Less: Imputed interest	(3,794)
Present value of future minimum lease payments	27,096
Lessee, Operating Lease, Liability, Payment, Due [Abstract]
2019 (excluding the six months ended June 30, 2019)	27,832
2020	50,248
2021	45,440
2022	47,024
2023	36,869
Thereafter	218,129
Total future minimum lease payments	425,542
Less: Imputed interest	(108,675)
Present value of future minimum lease payments	$ 316,867