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Investment in Unconsolidated Affiliates (Details) - USD ($)
$ in Thousands
1 Months Ended 3 Months Ended
Jun. 15, 2017
Jun. 30, 2018
Sep. 30, 2019
Mar. 31, 2020
Dec. 31, 2019
Long-term Investments and Receivables, Net [Abstract]          
Notes receivable and accrued interest converted to shares $ 400 $ 500      
Shares resulting from the conversion of notes receivable and accrued interest (in shares) 233,335 312,076      
Semitech Semiconductor Pty Ltd [Member]          
Long-term Investments and Receivables, Net [Abstract]          
Invested in notes receivable     $ 110    
Other Noncurrent Assets [Member] | Semitech Semiconductor Pty Ltd [Member]          
Long-term Investments and Receivables, Net [Abstract]          
Investments in notes receivable       $ 800 $ 700