LEASES AND RELATED PARTY LEASES - Future Minimum Lease Payment Under Operating Leases, After Adoption of 842 (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Operating Leased Assets [Line Items]
2020		$ 12,396
2020	$ 10,556
2021	13,314	13,247
2022	14,494	14,049
2023	11,954	11,682
2024	11,318	11,356
Thereafter	92,455	92,663
Total minimum lease payments	154,091	155,393
Less: Imputed interest	40,799	45,636
Total lease liabilities	113,292	109,757
Less: Current lease liabilities	12,964	12,253
Long-term lease liabilities	100,328	97,504
Related Parties
Operating Leased Assets [Line Items]
2020		296
2020	222
2021	296	296
2022	296	296
2023	296	296
2024	296	296
Thereafter	1,429	1,428
Total minimum lease payments	2,835	2,908
Third Parties
Operating Leased Assets [Line Items]
2020		12,100
2020	10,334
2021	13,018	12,951
2022	14,198	13,753
2023	11,658	11,386
2024	11,022	11,060
Thereafter	91,026	91,235
Total minimum lease payments	$ 151,256	$ 152,485