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Lessor (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Lessor, Lease, Description [Line Items]    
Operating lease income $ 2,534 $ 2,306
Minimum    
Lessor, Lease, Description [Line Items]    
Lessor - lease term 1 year  
Maximum    
Lessor, Lease, Description [Line Items]    
Lessor - lease term 34 years