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Notes Payable and Long-Term Debt - Other Financing Arrangements (Details) - USD ($)
$ in Thousands
May 01, 2019
Jun. 30, 2020
Dec. 31, 2019
Debt Instrument [Line Items]      
Long-term debt   $ 55,398 $ 42,942
Other notes payable | Premium Financing Agreement with AFCO Premium Credit LLC      
Debt Instrument [Line Items]      
Aggregate principal amount $ 3,391    
Down payment $ 509    
Debt term 10 months    
Interest rate 3.04%    
Long-term debt   $ 2,598 $ 768