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Investment in Unconsolidated Affiliates (Details) - USD ($)
$ in Millions
1 Months Ended
Jun. 15, 2017
Jun. 30, 2018
Dec. 31, 2019
Dec. 31, 2018
Long-term Investments and Receivables, Net [Abstract]        
Notes receivable and accrued interest converted to shares $ 0.4 $ 0.5    
Shares resulting from the conversion of notes receivable and accrued interest (in shares) 233,335 312,076    
Other Noncurrent Assets [Member] | Semitech Semiconductor Pty Ltd [Member]        
Long-term Investments and Receivables, Net [Abstract]        
Investment recorded cost     $ 0.9 $ 0.9
Investments in notes receivable     $ 0.7 $ 0.2