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v3.20.4

Borrowings - Additional Information (Details) |  |  | 1 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | --- | --- | ---
Jun. 01, 2020 USD ($) shares | Apr. 13, 2020 USD ($) | Jun. 30, 2020 USD ($) shares | Jul. 31, 2019 USD ($) | Dec. 31, 2020 USD ($) | Dec. 31, 2019 USD ($) | Dec. 31, 2018 USD ($) | Jan. 01, 2019 USD ($) Installment | Oct. 26, 2017 USD ($)
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Outstanding borrowings |  |  |  |  | $ 0 |  |  |  |
Remaining borrowing capacity |  |  |  |  | $ 8,000,000 |  |  |  |
Waiver extended date |  |  |  |  | 2020-05 |  |  |  |
Lines of credit repaid principal amount |  |  |  |  |  | $ 5,614,000 |  |  |
Debt instrument, outstanding balance |  |  |  |  | $ 362,000 | 508,000 |  |  |
Proceeds from PPP Loan |  | $ 2,300,000 |  |  | $ 2,289,000 |  |  |  |
PPP Loan, repayment date |  |  |  |  | Apr. 29, 2020 |  |  |  |
Loan and Security Agreement | East West Bank |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Maximum borrowings available |  |  |  |  | $ 0 |  |  |  |
Line of credit facility, cancellation date |  |  |  |  | Jun. 30, 2020 |  |  |  |
Subordinated Term Loan and Security Agreement | B. Riley Principal Investments, LLC |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Maximum borrowings available |  |  |  | $ 10,000,000 |  |  |  |  | $ 12,000,000
Outstanding borrowings |  |  |  |  | $ 0 | 10,003,000 |  |  |
Minimum principal amount outstanding of defined repayment penalties |  |  |  |  |  |  | $ 10,000,000 |  |
Prepayment penalty description |  |  |  |  |  |  | The prepayment penalty was 2% for 2019 and decreased to1% after the second aniversary through maturity |  |
Interest rate, stated percentage |  |  |  |  |  |  | 10.00% |  |
Debt prepayment penalties percentage |  |  |  |  | 1.00% |  | 2.00% |  |
Line of credit facility, maturity date |  |  |  |  |  |  | Sep. 01, 2022 |  |
Lines of credit repaid principal amount |  |  |  | $ 3,250,000 |  |  |  |  |
Lines of credit repaid principal amount percentage |  |  |  | 25.00% |  |  |  |  |
Percentage of fee incurred |  |  |  | 2.00% |  |  |  |  |
Compounded interest |  |  |  |  | $ 166,000 | 251,000 |  |  |
Note Amendment and Debt Cancellation Agreement | B. Riley Principal Investments, LLC |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Outstanding borrowings | $ 6,170,000 |  | $ 6,200,000 |  | 0 |  |  |  |
Outstanding indebtedness | $ 4,000,000 |  |  |  |  |  |  |  |
Debt instrument redemption date | Jun. 09, 2020 |  |  |  |  |  |  |  |
Conversion shares | shares | 8,226,834 |  | 8,226,834 |  |  |  |  |  |
Promissory Notes Payable |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Debt instrument, outstanding balance |  |  |  |  | $ 362,000 | $ 508,000 |  | $ 736,000 |
Debt instrument, periodic payment, number of equal quarterly installments | Installment |  |  |  |  |  |  |  | 20 |
Debt instrument, frequency of periodic payment |  |  |  |  |  | quarterly |  |  |
Promissory Notes Payable | Minimum |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Debt instrument, payment term |  |  |  |  | 2 years |  |  |  |
Promissory Notes Payable | Maximum |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Interest rate, stated percentage |  |  |  |  | 8.00% |  |  |  |
Debt instrument, payment term |  |  |  |  | 4 years |  |  |  |

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