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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, 2020
Dec. 31, 2019
Liabilities:    
Total lease liabilities $ 122 $ 157
Other assets    
Assets:    
Operating lease right-of-use assets 124 159
Accrued expenses and other liabilities    
Liabilities:    
Current portion of operating lease liabilities 52 47
Other long-term liabilities    
Liabilities:    
Long-term operating lease liabilities $ 70 $ 110