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Revolving Line of Credit (Details) - USD ($)
$ in Thousands
Jun. 30, 2020
Dec. 31, 2019
Line of Credit Facility [Line Items]    
Line of Credit Facility, Maximum Borrowing Capacity $ 15,000  
Line of Credit [Member]    
Line of Credit Facility [Line Items]    
Short-term Debt $ 0 $ 0