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Debt Financing and Revolving Credit Facilities (Narrative) (Details) |  |  |  |  |  | 1 Months Ended | 3 Months Ended | 9 Months Ended | 12 Months Ended |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Aug. 06, 2021 USD ($) $ / shares | Jul. 31, 2021 USD ($) | May 14, 2021 USD ($) $ / shares | Nov. 24, 2020 USD ($) $ / shares | Oct. 08, 2020 USD ($) | Jul. 30, 2021 USD ($) | Sep. 30, 2021 USD ($) $ / shares shares | Sep. 30, 2020 USD ($) | Sep. 30, 2021 USD ($) Item $ / shares shares | Sep. 30, 2020 USD ($) | Dec. 31, 2020 USD ($) $ / shares shares | Jul. 14, 2021 USD ($) | Dec. 18, 2020 USD ($) | Oct. 13, 2020 USD ($) | Aug. 07, 2020 USD ($) | Apr. 16, 2020 USD ($)
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of warrant or right percentage of outstanding common shares |  |  | 5.00% |  |  |  |  |  |  |  |  |  |  |  |  |
Gain on extinguishment of debt |  |  |  |  |  |  | $ 10,129,000 | $ 0 | $ 10,129,000 | $ 0 |  |  |  |  |  |
Common Stock, Par or Stated Value Per Share | $ / shares |  |  | $ 0.01 | $ 0.01 |  |  | $ 0.01 |  | $ 0.01 |  | $ 0.01 |  |  |  |  |
Class Of Warrant Or Right, Percentage Of Oustanding Common Shares |  |  |  | 23.00% |  |  |  |  |  |  |  |  |  |  |  |
Class of Warrant or Right, Number of Securities Called by Warrants or Rights | shares |  |  |  |  |  |  | 5,386,591 |  | 5,386,591 |  | 5,307,539 |  |  |  |  |
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares |  |  |  |  |  |  | $ 0.01 |  | $ 0.01 |  | $ 0.01 |  |  |  |  |
Additional warrant liability |  |  |  |  |  |  |  |  | $ 7,351,000 |  |  |  |  |  |  |
Warrants and Rights Outstanding |  |  |  |  |  |  | $ 31,699,000 |  | 31,699,000 |  | $ 12,730,000 |  |  |  |  |
Letter of Credit [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity Fee |  |  |  |  |  |  | 500,000 |  | 500,000 |  |  |  |  |  |  |
Paycheck Protection Program Loan [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Aggregate principal amount |  |  |  |  |  |  |  |  |  |  |  | $ 10,000,000 |  |  |  | $ 10,000,000
Gain on extinguishment of debt |  |  |  |  |  |  | 10,129,000 |  |  |  |  |  |  |  |  |
Remaining Balance Of Loan |  |  |  |  |  |  | 0 |  | 0 |  |  |  |  |  |  |
Siena Loan Agreement [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Remaining Borrowing Capacity |  |  |  |  |  |  | 31,000 |  | 31,000 |  | 9,701,000 |  |  |  |  |
deferred financing costs, gross |  |  |  |  | $ 1,101,000 |  | 1,037,000 |  | 1,037,000 |  |  |  |  |  |  |
Maximum borrowing capacity, description |  |  |  |  |  | the outstanding balance of all Revolving Loans may not exceed the lesser of (A) the Maximum Revolving Facility Amount minus the Availability Block and (B) an amount equal to the issued and undrawn portion of the Third Amendment Letter of Credit (as defined above) minus the Availability Block. The term “Availability Block”, as defined in the Amended and Restated Loan and Security Agreement, means 3.0% of the issued and undrawn amount under the Third Amendment Letter of Credit. |  |  |  |  |  |  |  |  |  |
Issued and undrawn amount, Percentage |  |  |  |  |  | 3.00% |  |  |  |  |  |  |  |  |  |
Maximum borrowing capacity |  |  |  |  | $ 20,000,000 |  | 25,000,000 |  | 25,000,000 |  |  |  |  |  |  |
Outstanding borrowings |  |  |  |  |  |  | $ 24,164,000 |  | $ 24,164,000 |  | 6,874,000 |  |  |  |  |
Value of eligible accounts |  |  |  |  | 85.00% |  |  |  |  |  |  |  |  |  |  |
Liquidation value |  |  |  |  | 85.00% |  |  |  |  |  |  |  |  |  |  |
Cost of eligible inventory |  |  |  |  | 50.00% |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate |  |  |  |  |  | 2.00% |  |  |  |  |  |  |  |  |  |
Interest rate |  |  |  |  |  |  | 5.26% |  | 5.26% |  |  |  |  |  |  |
Term Loan Credit Agreement [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
deferred financing costs |  |  | $ 480,000 | $ 2,872,000 |  |  | $ 2,827,000 |  | $ 2,827,000 |  | $ 2,814,000 |  |  |  |  |
Aggregate principal amount |  |  | $ 56,000,000 | $ 40,000,000 |  |  |  |  |  |  |  |  |  | $ 40,000,000 |  |
Class of warrant or right percentage of outstanding common shares |  |  | 5.00% |  |  |  |  |  |  |  |  |  |  |  |  |
Term |  |  |  |  |  |  |  |  | 5 years |  |  |  |  |  |  |
Additional loan amount |  |  | $ 16,000,000 |  |  |  |  |  | $ 16,000,000 |  |  |  |  |  |  |
Debt Instrument Covenant For Additional Financing |  | $ 15,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Additional loan interest rate |  |  |  |  |  |  |  |  | 14.00% |  |  |  |  |  |  |
Debt payment terms |  |  | Pursuant to the Amendment, in the event that the Additional Loan is not repaid in full by March 31, 2022, the Company shall issue to the Lender and/or an affiliate of the Lender a warrant (the “Additional Warrant”) to purchase a number of shares of the Company’s common stock, par value $0.01 per share, equal to 5% of the Company’s outstanding common stock on a fully-diluted basis at the time the Additional Warrant is exercised (after giving effect to such issuance). |  |  |  |  |  |  |  |  |  |  |  |  |
Warrants outstanding term |  |  | 10 years |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate |  |  |  |  |  |  | 14.00% |  | 14.00% |  |  |  |  |  |  |
Common Stock, Par or Stated Value Per Share | $ / shares |  |  | $ 0.01 |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares |  |  | $ 0.01 |  |  |  |  |  |  |  |  |  |  |  |  |
Additional warrant liability |  |  |  |  |  |  |  |  | $ 7,351,000 |  |  |  |  |  |  |
Term Loan Credit Agreement [Member] | Letter of Credit [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Aggregate principal amount |  |  |  |  |  | $ 25,000,000 |  |  |  |  |  |  |  |  |  |
Term Loan Credit Agreement Third Amendment [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of common stock | 5.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Rail repayment liquidity condition to covert equity fee to cash | $ 15,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash fee | $ 1,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of common stock, Maximum | 9.99% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common Stock, Par or Stated Value Per Share | $ / shares | $ 0.01 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity Fee | $ 1,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
M & T Bank [Member] | Revolving Credit Facility [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Collateral |  |  |  |  |  |  |  |  | 6,842 |  | 6,975 |  |  |  |  |
Maximum borrowing capacity |  |  |  |  |  |  | $ 40,000,000 |  | $ 40,000,000 |  |  |  |  |  |  |
Outstanding borrowings |  |  |  |  |  |  | $ 10,161,000 |  | $ 10,161,000 |  | $ 10,105,000 |  |  |  |  |
Payment demand |  |  |  |  |  |  |  |  |  |  |  |  | $ 10,114,000 |  | $ 5,081,000 |
Payment term |  |  |  |  |  |  |  |  | 5 days |  |  |  |  |  |  |
Interest coverage ratio | Item |  |  |  |  |  |  |  |  | 1.25 |  |  |  |  |  |  |
Interest rate |  |  |  |  |  |  | 4.18% |  | 4.18% |  |  |  |  |  |  |

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- Definition Number of securities into which the class of warrant or right may be converted. For example, but not limited to, 500,000 warrants may be converted into 1,000,000 shares. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=123467817&loc=d3e21475-112644 + Details
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- Definition Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 50 -Section 40 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=123467658&loc=d3e12355-112629 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 50 -Section 40 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=123467658&loc=d3e12317-112629 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3602-108585 + Details
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- Definition The carrying value as of the balance sheet date of the current and noncurrent portions 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 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 2: 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 Reference 3: 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 + Details
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- Definition Description of the credit facility's borrowing capacity including discussion of how the borrowing capacity is determined (for example, borrowing capacity based on the amount of current assets). + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -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 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(19)(b)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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- Definition Discussion of whether the borrowings under the credit facility are secured or unsecured and, if secured, a description of collateral (for example, accounts receivable less than 120 days old, finished goods inventory). + 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)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 2: 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(b)) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690 Reference 3: 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 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(13)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 Reference 5: 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)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 6: 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 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 Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding). + 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 Value of outstanding derivative securities that permit the holder the right to purchase securities (usually equity) from the issuer at a specified price. + References No definition available. + Details
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