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Leases - Schedule of Operating Leases (Details) - USD ($)
$ in Thousands
Mar. 31, 2020
Dec. 31, 2019
Leases [Abstract]    
Building subject to operating leases $ 4,012 $ 4,012
Less: accumulated depreciation (3,269) (3,244)
Building subject to operating leases, net $ 743 $ 768