Annual report pursuant to Section 13 and 15(d)

Balance Sheets Details - Allowance for Doubtful Accounts Receivable (Details)

v3.19.3.a.u2
Balance Sheets Details - Allowance for Doubtful Accounts Receivable (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Allowance for Doubtful Accounts Receivable [Roll Forward]      
Allowance - beginning of period $ (34) $ (34) $ (421)
Write-offs and other 0 0 387
Allowance - end of period $ (34) $ (34) $ (34)