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Revolving Credit Facilities and Mortgage Payable - Mortgage (Details) - USD ($)
$ in Thousands
1 Months Ended
Jul. 31, 2014
Dec. 31, 2019
Mar. 31, 2019
Debt Instrument [Line Items]      
Short-term borrowings   $ 6,645 $ 603
Mortgage payable   30,430 $ 30,901
Mortgages      
Debt Instrument [Line Items]      
Debt instrument face amount $ 33,931    
Long-term debt gross   31,056  
Short-term borrowings   626  
Mortgage payable   $ 30,430  
Fixed interest rate 4.928%    
Debt amortization period 30 years    
Balloon payment to be paid $ 23,695