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Net Sales and Revenue Recognition - Narrative (Details) - USD ($)
3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
Dec. 31, 2019
Revenues [Abstract]          
Net Reporting Amount $ 6,200,000 $ 10,400,000 $ 18,700,000 $ 20,800,000  
Deferred Revenue 3,200,000   3,200,000   $ 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%