LEASES - Operating Lease (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Leases [Abstract]
Operating lease ROU assets	$ 93,440	$ 84,791
Current portion of operating lease liabilities	30,046	27,769
Operating lease liabilities, less current portion	61,987	56,128
Operating lease liabilities	$ 92,000	$ 83,900