Debt - Schedule of Debt (With Unrelated Parties) (Parenthetical) (Details)				1 Months Ended							3 Months Ended		9 Months Ended
	Apr. 15, 2020 USD ($)	Feb. 11, 2019 USD ($)	Jan. 23, 2019 USD ($)	Sep. 30, 2020 USD ($)	Oct. 31, 2019	Feb. 28, 2019	Nov. 30, 2018 USD ($)	Aug. 31, 2018 USD ($)	Aug. 31, 2017 USD ($)	Dec. 31, 2014 USD ($)	Sep. 30, 2021 USD ($) $ / shares shares	Sep. 30, 2020 USD ($)	Sep. 30, 2021 USD ($) Arrangement $ / shares shares	Sep. 30, 2020 USD ($)	Mar. 31, 2022 USD ($)	Jun. 30, 2021 $ / shares shares	Apr. 30, 2021 USD ($) $ / shares shares	Mar. 31, 2021 USD ($) $ / shares shares	Dec. 31, 2020 USD ($) $ / shares	Oct. 20, 2020 $ / shares shares	Oct. 19, 2020 $ / shares shares	Sep. 30, 2019 shares
Debt Instrument [Line Items]
Warrants to purchase shares of common stock | shares																		250,000
Warrants, exercise price | $ / shares																			$ 0.01	$ 0.01	$ 2.50
Warrants issued | shares																				5,072,000	7,925,000
Debt instrument, conversion feature description													The Secured Convertible Notes are convertible into shares (the “Note Shares”) of the Company’s common stock at a conversion rate of $2.50 per share of common stock at the Holder’s option: 1) at any time after the first anniversary of the date of issuance or 2) at any time within 90 days after a “triggering event,” including a sale, reorganization, merger, or similar transaction where the Company is not the surviving entity. The Secured Convertible Notes are also subject to mandatory conversion at any time after the first anniversary of the date of issuance if the average volume of shares of common stock traded on the Nasdaq Capital Market, NYSE American Market or a higher tier of either exchange is 100,000 or more for the 10 trading days prior to the applicable date. Such a mandatory conversion has not occurred.
Gain (loss) on extinguishment of debt											$ 10,163,000	$ 46,000	$ 10,953,000	$ (10,010,000)
Debt instrument, description													As additional consideration for the Secured Convertible Notes, the Company issued warrants to the Holders to purchase 1,602,000 shares of common stock at an exercise price of $2.50 per share, exercisable for ten years from the date of issuance. The fair value of the warrants issued determined using the Black Scholes pricing model was $0.7 million, calculated with a ten-year term; 65% volatility; 2.89%, 2.85% or 3.00% discount rates and the assumption of no dividends.
Maturity start date month and year													2019-09
Maturity end date month and year													2024-08
Advance From Supplier Acquired From Thunder Ridge [Member]
Debt Instrument [Line Items]
Principal amount									$ 1,000,000.0
Interest rate									8.50%
Maturity date, month and year									2022-07
Note payable, description													Thunder Ridge signed an agreement with a supplier on August 31, 2017, in which $1.0 million was advanced to Thunder Ridge during 2017. The advance bears interest at 8.5%, is collateralized by substantially all of Thunder Ridge’s assets, is guaranteed by a member of management, and has a July 2022 maturity date.
Note Payable Issued During November Two Thousand And Eighteen [Member]
Debt Instrument [Line Items]
Principal amount							$ 300,000
Interest rate							3.00%
Maturity date, month and year							2022-10
Note payable, description													The note calls for quarterly principal payments on January, April, July, and October 1st of $18,750 plus the related accrued interest.
quarterly principal payments							$ 18,750
Notes Payable, Other Payables [Member]
Debt Instrument [Line Items]
Principal amount		$ 800,000	$ 3,800,000
Interest rate		10.20%	10.10%
Maturity date		Feb. 11, 2023	Feb. 23, 2024
Common Stock [Member]
Debt Instrument [Line Items]
Warrants issued | shares																						4,375,000
Minimum [Member]
Debt Instrument [Line Items]
Interest rate											3.90%		3.90%
Maximum [Member]
Debt Instrument [Line Items]
Interest rate											5.10%		5.10%
Note Purchase Agreements and Releases [Member]
Debt Instrument [Line Items]
Principal amount																		$ 4,000,000.0
Notes payable in cash																	$ 100,000	$ 600,000
Warrants to purchase shares of common stock | shares																1,481,453
Interest expense													$ 100,000
Estimated fair value of warrants											$ 200,000		200,000
Warrants, exercise price | $ / shares																$ 0.01		$ 0.01
Gain (loss) on extinguishment of debt													400,000
Note Purchase Agreements and Releases [Member] | Maximum [Member]
Debt Instrument [Line Items]
Warrants to purchase shares of common stock | shares																		1,200,000
Main Street Loan [Member]
Debt Instrument [Line Items]
Principal amount											$ 17,400,000		$ 17,400,000
Interest rate											3.00%		3.00%
Payment terms, description													Beginning December 14, 2022, the Borrowers must make quarterly interest payments, and the Borrowers must make payments equal to 15% of the outstanding principal balance plus capitalized interest on each of December 14, 2023 and December 14, 2024. The entire outstanding principal balance, together with all accrued and unpaid interest, is due and payable in full on December 14, 2025.
Quarterly interest payments date													Dec. 14, 2022
Unpaid interest as percentage on outstanding principal balance													15.00%
Maturity date													December 14, 2025
Capitalized interest													$ 400,000
Unamortized debt discount											$ 300,000		300,000						$ 300,000
Unamortized debt issuance costs											$ 1,000,000.0		$ 1,000,000.0						$ 1,100,000
PPP Loan [Member]
Debt Instrument [Line Items]
Principal amount	$ 10,000,000.0
Interest rate	1.00%
Maturity date	Apr. 15, 2022
Period for loan amount and accrued interest eligible for forgiveness	56 days
Note Payable [Member]
Debt Instrument [Line Items]
Principal amount										$ 1,300,000
Maturity date, month and year										2024-03
Note payable, description													The $1.3 million note payable was issued December 31, 2014, with interest adjusted to the SBA LIBOR base rate, plus 2.35%. The note matures March 2024, is secured by substantially all of Titan’s business assets and is personally guaranteed by certain former members of Titan including a member of our board of directors and certain of his relatives, and beneficial owners of more than 5% of our undiluted shares of common stock. The note is a co-borrower arrangement between Titan and El Toro with the proceeds received by El Toro.
Note Payable [Member] | Minimum [Member]
Debt Instrument [Line Items]
Percentage of common stock of guaranteed beneficial owners										5.00%
Note Payable [Member] | London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument [Line Items]
Basis points added to LIBOR rate										2.35%
Secured Convertible Promissory Notes [Member]
Debt Instrument [Line Items]
Principal amount																	$ 600,000
Interest rate								9.00%
Warrants, exercise price | $ / shares											$ 2.50		$ 2.50
Secured convertible promissory notes				$ 4,000,000.0				$ 4,000,000.0			$ 4,000,000.0	$ 4,000,000.0	$ 4,000,000.0	4,000,000.0
Paid debt issuance costs								$ 500,000
Debt instrument repayment interval period								2 years
Conversion rate | $ / shares											$ 2.50		$ 2.50
Liquidated damages													1.00%
Liquidated damages incurred													$ 100,000	400,000
Payments for liquidated damages													$ 0	$ 100,000
Warrant exercise period													10 years
Fair value of warrants											$ 700,000		$ 700,000
Secured Convertible Promissory Notes [Member] | Bridge Loan [Member] | Subsequent Event [Member]
Debt Instrument [Line Items]
Principal amount															$ 250,000
Secured Convertible Promissory Notes [Member] | Volatility [Member]
Debt Instrument [Line Items]
Warrants outstanding, measurement input											65		65
Secured Convertible Promissory Notes [Member] | Discount Rate [Member]
Debt Instrument [Line Items]
Warrants outstanding, measurement input											2.89		2.89
Secured Convertible Promissory Notes [Member] | Measurement Input Expected Dividend Payment [Member]
Debt Instrument [Line Items]
Warrants outstanding, measurement input											0		0
Secured Convertible Promissory Notes [Member] | Common Stock [Member]
Debt Instrument [Line Items]
Warrants issued | shares											1,602,000		1,602,000
Secured Convertible Promissory Notes [Member] | Minimum [Member] | Discount Rate [Member]
Debt Instrument [Line Items]
Warrants outstanding, measurement input											2.85		2.85
Secured Convertible Promissory Notes [Member] | Maximum [Member] | Discount Rate [Member]
Debt Instrument [Line Items]
Warrants outstanding, measurement input											3.00		3.00
Secured Convertible Promissory Notes [Member] | Note Purchase Agreements and Releases [Member]
Debt Instrument [Line Items]
Warrants to purchase shares of common stock | shares																	231,453
Warrants, exercise price | $ / shares																	$ 0.01
Note Payable To Financing Company [Member]
Debt Instrument [Line Items]
Maturity date, month and year					2024-10	2023-03
Note Payable To Financing Company [Member] | Minimum [Member]
Debt Instrument [Line Items]
Interest rate													4.50%
Note Payable To Financing Company [Member] | Maximum [Member]
Debt Instrument [Line Items]
Interest rate													8.94%
Frinkle Equipment Notes [Member] | Minimum [Member]
Debt Instrument [Line Items]
Interest rate											5.20%		5.20%
Maturity date, month and year													2020-05
Frinkle Equipment Notes [Member] | Maximum [Member]
Debt Instrument [Line Items]
Interest rate											11.80%		11.80%
Maturity date, month and year													2025-09
Failed Sale-leaseback Obligations [Member]
Debt Instrument [Line Items]
Proceeds from sale-leaseback													$ 4,900,000
Maturity start date month and year													2020-09
Maturity end date month and year													2021-12
Proceeds from sale of certain assets				$ 700,000
Gain or loss on sale of assets													$ 0
Number of Sale Leaseback Arrangements | Arrangement													4
Failed Sale-leaseback Obligations [Member] | Minimum [Member]
Debt Instrument [Line Items]
Interest rate													4.35%
Failed Sale-leaseback Obligations [Member] | Maximum [Member]
Debt Instrument [Line Items]
Interest rate													4.375%