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Commitments and Contingencies - Additional Information (Details) - USD ($)
9 Months Ended
Sep. 30, 2019
Dec. 31, 2018
Loss Contingencies [Line Items]    
Post retirement obligation $ 1,115,000 $ 1,115,000
Kenneth Trbovich | Employment Agreement    
Loss Contingencies [Line Items]    
Post retirement obligation $ 719,000 $ 644,000
Minimum age limit 65 years