LEASES - Operating Lease ROU Assets and Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Assets:
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	Other assets	Other assets
Operating lease ROU assets	$ 574	$ 1,218
Liabilities:
Present value of lease liabilities	$ 596	$ 1,131