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Debt - Narrative (Details) - USD ($) |  |  |  |  |  | 1 Months Ended | 2 Months Ended | 3 Months Ended | 6 Months Ended | 30 Months Ended |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Apr. 17, 2020 | Jan. 16, 2020 | Nov. 29, 2019 | Nov. 25, 2019 | Mar. 29, 2019 | Jan. 31, 2020 | Jun. 30, 2020 | Jun. 30, 2020 | Jun. 30, 2019 | Jun. 30, 2020 | Jun. 30, 2019 | Dec. 31, 2021 | Dec. 31, 2019
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Credit line borrowings, net of loan origination fees |  |  |  |  |  |  | $ 1,331,000 | $ 1,331,000 |  | $ 1,331,000 |  |  | $ 715,000
Accumulated interest on subordinated debt |  | $ 100,000 |  |  |  |  |  |  |  |  |  |  |
Preferred stock, par value (in usd per share) |  |  |  |  |  |  | $ 0.0001 | $ 0.0001 |  | $ 0.0001 |  |  | $ 0.0001
Percentage of gross proceeds used to make payments on note |  |  |  |  |  | 10.00% |  |  |  |  |  |  |
Gross proceeds |  |  |  |  |  | $ 275,000 |  |  |  |  |  |  |
Payments on the Iliad Note |  |  |  |  |  |  |  |  |  | $ 526,000 | $ 0 |  |
PPP loan |  |  |  |  |  |  | $ 263,000 | $ 263,000 |  | 263,000 |  |  | $ 0
PPP loan, net of current maturities |  |  |  |  |  |  | 532,000 | 532,000 |  | 532,000 |  |  | 0
Note Purchase Agreement |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Borrowing rate |  |  |  | 8.00% |  |  |  |  |  |  |  |  |
Principal amount |  |  |  | $ 1,300,000 |  |  |  |  |  |  |  |  |
Unamortized issuance costs at date of issuance |  |  |  |  |  |  | 200,000 | 200,000 |  | 200,000 |  |  | 200,000
Issue discount |  |  |  | 142,000 |  |  |  |  |  |  |  |  |
Purchase price |  |  |  | 1,100,000 |  |  |  |  |  |  |  |  |
Unamortized debt issuance costs |  |  |  | 15,000 |  |  |  |  |  |  |  |  |
Prepayment premium |  |  | 15.00% |  |  |  |  |  |  |  |  |  |
Repurchase amount (up to) |  |  |  | $ 150,000 |  |  |  |  |  |  |  |  |
Percentage increase due to deferral of redemption option |  |  | 1.50% |  |  |  |  |  |  |  |  |  |
Total liability, net of discount and financing fees |  |  |  |  |  |  | 600,000 | $ 600,000 |  | $ 600,000 |  |  | 1,000,000.0
Increase in amount outstanding from becoming delisted |  |  | 15.00% |  |  |  |  |  |  |  |  |  |
Percentage of gross proceeds used to make payments on note |  |  | 10.00% |  |  |  |  |  |  |  |  |  |
Increase from exercises of restricted issuance |  |  | 3.00% |  |  |  |  |  |  |  |  |  |
Payments on the Iliad Note |  |  |  |  |  | $ 226,000 |  |  |  |  |  |  |
Increase in amount outstanding from insolvency and bankruptcy event |  |  | 5.00% |  |  |  |  |  |  |  |  |  |
Interest rate after insolvency and bankruptcy events |  |  | 22.00% |  |  |  |  |  |  |  |  |  |
Note Purchase Agreement | Minimum |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Increase in amount outstanding from default event |  |  | 5.00% |  |  |  |  |  |  |  |  |  |
Note Purchase Agreement | Maximum |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Increase in amount outstanding from default event |  |  | 15.00% |  |  |  |  |  |  |  |  |  |
Note Purchase Agreement | Debt Instrument, Period Two |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Prepayment premium |  |  | 10.00% |  |  |  |  |  |  |  |  |  |
Paycheck Protection Program |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Borrowing rate | 1.00% |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from loan origination | $ 795,000 |  |  |  |  |  |  |  |  |  |  |  |
Accrued interest |  |  |  |  |  |  | $ 2,000 |  |  |  |  |  |
Subsequent Event |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate on convertible notes |  |  |  |  |  |  |  |  |  |  |  | 10.00% |
Convertible Debt |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from issuance of subordinated convertible promissory notes |  |  |  |  | $ 1,700,000 |  |  |  |  |  |  |  |
Principal amount |  |  |  |  |  |  |  |  | $ 1,700,000 |  | $ 1,700,000 |  |
Interest rate on convertible notes |  |  |  |  |  |  |  |  | 5.00% |  |  |  |
Unamortized issuance costs at date of issuance |  | 40,000.00 |  |  |  |  |  |  |  |  |  |  |
Net proceeds from the conversion of convertible debt to preferred stock |  | $ 1,800,000 |  |  |  |  |  |  |  |  |  |  |
Conversion rate (in dollars per share) |  | $ 0.67 |  |  |  |  |  |  | $ 0.67 |  | $ 0.67 |  |
Conversion of notes to preferred stock (in shares) |  |  |  |  |  |  |  |  |  | 2,709,018 |  |  |
Preferred stock, par value (in usd per share) |  |  |  |  |  |  | $ 0.0001 | $ 0.0001 |  | $ 0.0001 |  |  |
Revolving Credit Facility |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Credit line borrowings, net of loan origination fees |  |  |  |  |  |  | $ 1,300,000 | $ 1,300,000 |  | $ 1,300,000 |  |  | 700,000
Unamortized issuance costs |  |  |  |  |  |  | $ 100,000 | $ 100,000 |  | $ 100,000 |  |  | $ 100,000
Debt instrument, variable rate |  |  |  |  |  |  |  | 2.00% |  |  |  |  |
Borrowing rate |  |  |  |  |  |  | 5.25% | 5.25% |  | 5.25% |  |  | 6.75%
Overdraft fee |  |  |  |  |  |  |  | 2.00% |  |  |  |  |
Annual facility fee |  |  |  |  |  |  | 1.00% | 1.00% |  | 1.00% |  |  |
Maximum borrowing capacity on line of credit |  |  |  |  |  |  | $ 5,000,000.0 | $ 5,000,000.0 |  | $ 5,000,000.0 |  |  |
Debt instrument, term |  |  |  |  |  |  |  | 3 years |  |  |  |  |
Collateral management fee |  |  |  |  |  |  |  | 0.50% |  |  |  |  |

X
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- Definition Debt Instrument, Increase From Exercises Of Restricted Issuance, Percent + References No definition available. + Details
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- Definition Debt Instrument, Increase In Amount Outstanding From Becoming Delisted, Percent + References No definition available. + Details
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- Definition Debt Instrument, Increase In Amount Outstanding From Default Event, Percent + References No definition available. + Details
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- Definition Debt Instrument, Increase In Amount Outstanding From Insolvency And Bankruptcy Event, Percent + References No definition available. + Details
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- Definition Debt Instrument, Proceeds To Be Paid To Lender, Percent + References No definition available. + Details
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- Definition LineOfCreditFacilityAnnualFacilityFeePercent + References No definition available. + Details
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- Definition LineOfCreditFacilityCollateralManagementFee + References No definition available. + Details
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- Definition Net proceeds from the conversion of convertible debt to preferred stock + References No definition available. + Details
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- Definition Note Payable, Percentage Increase Due to Deferral of Redemption Option + References No definition available. + Details
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- Definition Payment Protection Program, Current + References No definition available. + Details
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- Definition Payment Protection Program, Noncurrent + References No definition available. + Details
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- Definition The rate of interest that was being paid on the original debt issue that is being converted in the noncash (or part noncash) transaction. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=121583591&loc=d3e4332-108586 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=121583591&loc=d3e4304-108586 + Details
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- Definition Percentage points added to the reference rate to compute the variable rate on the debt instrument. + References No definition available. + Details
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- Definition Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (b)(1) -URI http://asc.fasb.org/extlink&oid=120520924&loc=SL6031897-161870 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(16)) -URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910 Reference 3: 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)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 4: 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(16)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 + Details
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- Definition The price per share of the conversion feature embedded in the debt instrument. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 5 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=120520924&loc=SL6031898-161870 + Details
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- Definition Face (par) amount of debt instrument at time of issuance. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=119993939&loc=d3e28551-108399 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=114775985&loc=d3e28878-108400 + Details
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- Definition Increase for accrued, but unpaid interest on the debt instrument for the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(f)) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690 + Details
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- Definition Contractual interest rate for funds borrowed, under the debt agreement. + 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(a)(1)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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- Definition Fair value amount of debt instrument that was repurchased. + References No definition available. + Details
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- Definition Period of time between issuance and maturity of debt instrument, 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 Amount of unamortized debt discount (premium) and debt issuance costs. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (b)(2) -URI http://asc.fasb.org/extlink&oid=120520924&loc=SL6031897-161870 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=119993939&loc=d3e28555-108399 + Details
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- Definition Amount, after accumulated amortization, of debt premium. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=114775985&loc=d3e28878-108400 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 1A -URI http://asc.fasb.org/extlink&oid=119993939&loc=d3e28541-108399 + Details
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- Definition Amount, before accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=119993939&loc=d3e28555-108399 + 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 Face amount or stated value per share of preferred stock nonredeemable or redeemable solely at the option of the issuer. + 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(28)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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- Definition The cash inflow during the period from additional borrowings in aggregate debt. Includes proceeds from short-term and long-term debt. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3255-108585 + Details
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- Definition The cash inflow from a borrowing where a lender is placed in a lien position behind debt having a higher priority of repayment (senior) in liquidation of the entity's assets or underlying collateral. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3255-108585 + Details
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- Definition The cash inflow from the issuance of common stock, preferred stock, treasury stock, stock options, and other types of equity. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3255-108585 + Details
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