LEASES - Maturity of Leases (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Jan. 01, 2019
Operating Leases, After Adoption of 842:
2019 (excluding the nine months ended September 30, 2019)	$ 2,270
2020	9,073
2021	9,098
2022	8,519
2023	7,541
Thereafter	8,698
Total undiscounted lease payments	45,199
Less: Imputed interest	8,131
Total lease liabilities	37,068	$ 31,000
Finance Leases, After Adoption of 842:
2019 (excluding the nine months ended September 30, 2019)	8,412
2020	33,406
2021	35,243
2022	33,995
2023	33,244
Thereafter	633,139
Total undiscounted lease payments	777,439
Less: Imputed interest	507,349
Total lease liabilities	$ 270,090