LEASES - Minimum Lease Payments Under Prior Guidance (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Operating Leases
2021		$ 25,490
2022		28,837
2023		27,633
2024		28,207
2025		27,474
Thereafter		116,155
Total minimum lease payments		253,796
Finance Leases
2021		1,729
2022		1,547
2023		1,174
2024		9
2025		0
Thereafter		0
Total minimum lease payments		4,459
Less: Interest		(1,202)
Present value of lease obligations		3,257
Less: Current portion		(1,261)
Long-term portion of lease obligations	$ 0	$ 1,996