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Debt - Credit Facilities (Details) | Aug. 11, 2020 USD ($) creditFacility | Dec. 11, 2018 USD ($) | Sep. 30, 2021 USD ($) | Apr. 20, 2021 USD ($) | Dec. 31, 2020 USD ($) | Aug. 31, 2020 creditFacility
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Line of Credit Facility [Line Items] |  |  |  |  |  |
Number of debt financing facilities | creditFacility | 2 |  |  |  |  | 2
Credit line borrowings, net of loan origination fees |  |  | $ 2,666,000 |  | $ 2,298,000 |
Revolving Credit Facility | Inventory Facility |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |
Maximum borrowing capacity on line of credit | $ 3,000,000 |  |  | $ 3,500,000 |  |
Inventory costs | 75.00% |  |  |  |  |
Inventory, net orderly liquidation value | 85.00% |  |  |  |  |
Interest rate | 5.75% |  | 22.40% |  | 23.60% |
Monthly service fee | 1.00% |  |  |  |  |
Minimum monthly fee | $ 18,000 |  |  |  |  |
Credit line borrowings, net of loan origination fees |  |  | $ 1,400,000 |  | $ 1,300,000 |
Amortized net issuance costs |  |  | $ 100,000 |  | $ 100,000 |
Revolving Credit Facility | Inventory Facility | London Interbank Offered Rate (LIBOR) |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |
Interest rate | 4.00% |  |  |  |  |
Revolving Credit Facility | Receivables Facility |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |
Maximum borrowing capacity on line of credit | $ 2,500,000 |  |  |  |  |
Interest rate |  |  | 8.00% |  | 7.90% |
Monthly service fee | 1.00% |  |  |  |  |
Minimum monthly fee | $ 25,000 |  |  |  |  |
Percent of accounts receivable used as borrowing capacity | 90.00% |  |  |  |  |
Stated interest rate on collateral management fee |  |  | 6.00% |  | 6.00% |
Credit line borrowings, net of loan origination fees |  |  | $ 1,300,000 |  | $ 1,000,000 |
Amortized net issuance costs |  |  | $ 14,000 |  | $ 40,000 |
Revolving Credit Facility | Receivables Facility | Prime Rate |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |
Interest rate | 2.00% |  |  |  |  |
Revolving Credit Facility | Austin Facility |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |
Maximum borrowing capacity on line of credit |  | $ 5,000,000 |  |  |  |
Line of credit term (in years) |  | 3 years |  |  |  |
Annual facility fee |  | 1.00% |  |  |  |
Annual facility fee, payment period |  | 3 years |  |  |  |
Collateral management fee |  | 0.50% |  |  |  |
Payment to close Austin credit facility | $ 1,400,000 |  |  |  |  |
Termination fee | 100,000 |  |  |  |  |
Write off of remaining issuance costs | $ 59,000 |  |  |  |  |
Revolving Credit Facility | Austin Facility | Prime Rate |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |
Margin added to borrowing rate |  | 2.00% |  |  |  |

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- Definition Line Of Credit Facility, Annual Facility Fee, Period + References No definition available. + Details
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- Definition Line of Credit Facility, Borrowing Capacity, Inventory Costs, Percent + References No definition available. + Details
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- Definition Line of Credit Facility, Borrowing Capacity, Inventory Value, Percent + References No definition available. + Details
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- Definition Line of Credit Facility, Borrowing Capacity, Value Of Accounts Receivable, Percent + References No definition available. + Details
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- Definition Line Of Credit Facility, Collateral Management Fee + References No definition available. + Details
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- Definition Line Of Credit Facility, Monthly Facility Fee + References No definition available. + Details
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- Definition Line Of Credit Facility, Monthly Facility Fee, Percent + References No definition available. + Details
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- Definition Amount of the fee that accompanies borrowing money under the debt instrument. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(b)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 1B -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123466505&loc=SL123495323-112611 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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- Definition The fee, expressed as a percentage of the line of credit facility, for the line of credit facility regardless of whether the facility has been used. + References No definition available. + Details
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- Definition Period remaining on line of credit facility before it terminates, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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- Definition The carrying value as of the balance sheet date of the current portion of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(13)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(19)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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- Definition Amount of cash outflow for cost from early extinguishment and prepayment of debt. Includes, but is not limited to, third-party cost, premium paid, and other fee paid to lender directly for debt extinguishment or debt prepayment. Excludes accrued interest. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3291-108585 + Details
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- Definition The remaining balance of debt issuance expenses that were capitalized and are being amortized against income over the lives of the respective bond issues. This does not include the amounts capitalized as part of the cost of the utility plant or asset. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.17) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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- Definition Write-off of amounts previously capitalized as debt issuance cost in an extinguishment of debt. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.8) -URI http://asc.fasb.org/extlink&oid=123367319&loc=SL114868664-224227 + Details
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