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LEASES - Assets and liabilities related to operating leases recorded on balance sheet (Details) - ASU No. 2016-02, Leases (Topic 842) - USD ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Liabilities:    
Total lease liabilities $ 71 $ 122
Other assets    
Assets:    
Operating lease right-of-use assets 72 124
Accrued expenses and other liabilities    
Liabilities:    
Current portion of operating lease liabilities 54 52
Other long-term liabilities    
Liabilities:    
Long-term operating lease liabilities $ 17 $ 70