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Net Sales and Revenue Recognition - Narrative (Details) - USD ($)
3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Dec. 31, 2019
Revenues [Abstract]          
Net Reporting Amount $ 11,100,000 $ 13,600,000 $ 29,900,000 $ 34,400,000  
Deferred Revenue 3,600,000   3,600,000   $ 2,200,000
Concentration Risk [Line Items]          
Contract With Customer Asset Net $ 0   $ 0   $ 0
Top Five Customers Concentration Risk [Member]          
Concentration Risk [Line Items]          
Concentration Risk, Percentage         12.00%
Top Customer Concentration Risk [Member]          
Concentration Risk [Line Items]          
Concentration Risk, Percentage         6.00%