Description of Business and Summary of Significant Accounting Policies - Additional Information (Details)				1 Months Ended		3 Months Ended			12 Months Ended
	Mar. 09, 2021 USD ($)	Feb. 19, 2021 USD ($)	Jan. 19, 2021 USD ($)	Feb. 28, 2021 USD ($)	Jan. 31, 2021 USD ($)	Mar. 31, 2022 USD ($) $ / shares shares	Mar. 31, 2021 USD ($) Installment	Dec. 31, 2020 USD ($) $ / shares	Dec. 31, 2021 USD ($) Facility Station Acquisition $ / shares	Dec. 31, 2020 USD ($) $ / shares	Jun. 30, 2021 USD ($) $ / shares shares	Oct. 19, 2020 $ / shares	Jun. 30, 2020 USD ($)	Dec. 31, 2019 USD ($)
Description Of Business And Summary Of Significant Accounting Policies [Line Items]
Number of facilities in operation | Facility									10
Number of acquisitions completed | Acquisition									7
Cash								$ 26,644,000	$ 7,329,000	$ 26,644,000
Working capital deficit									93,400,000
Stockholders' deficit								$ (67,322,000)	(50,935,000)	(67,322,000)				$ (12,673,000)
Debt and lease obligations									114,400,000
Cash provided by operating activities									23,548,000	(10,022,000)
Nonrecurring cash receipts from settlement agreements									28,500,000
Net income									14,253,000	$ (46,848,000)
Pre-tax nonrecurring revenue from settlement agreements									34,800,000
Pre-tax gain on extinguishment of debt									11,000,000.0
Principal amount due									66,777,000
Warrants, exercise price | $ / shares								$ 0.01		$ 0.01		$ 2.50
Cash equivalents								$ 0	0	$ 0
Indefinite-lived intangible assets								$ 0	0	0
Long-lived asset impairment charges									0	2,302,000
Unrecognized income tax benefits									$ 0	$ 0
Common stock price per share | $ / shares								$ 0.0001	$ 0.0001	$ 0.0001
ASU 2019-12 [Member]
Description Of Business And Summary Of Significant Accounting Policies [Line Items]
Change in accounting principle, accounting standards update, adoption date									Jan. 01, 2021
Change in accounting principle, accounting standards update, adopted [true false]									true
Change in accounting principle, accounting standards update, immaterial effect true false]									true
Minimum [Member]
Description Of Business And Summary Of Significant Accounting Policies [Line Items]
Financing transactions, award grant									$ 30,000,000
USPS [Member]
Description Of Business And Summary Of Significant Accounting Policies [Line Items]
Contractual payment terms									There is no significant financing component in the transaction price, as the USPS generally pays within the contractual payment terms of 30 to 60 days.
Revenue Benchmark [Member] | Customer Concentration Risk [Member] | Trucking [Member]
Description Of Business And Summary Of Significant Accounting Policies [Line Items]
Percentage of concentrations of credit risk									89.00%	88.00%
Letter of Intent and Memo of Understanding [Member]
Description Of Business And Summary Of Significant Accounting Policies [Line Items]
Funds held in reserve against advances							$ 800,000
Repayment of factor advances							11,000,000.0
Amount retained to reduce outstanding principal amount of factoring advances							$ 6,900,000
Number of installments for repayment | Installment							48
Frequency of payments							monthly
Date of first required payment							Jan. 01, 2022
Subsequent Event [Member]
Description Of Business And Summary Of Significant Accounting Policies [Line Items]
Warrants to purchase shares of common stock | shares						7,553,750
Promissory notes convertible amount						$ 9,500,000
Common stock price per share | $ / shares						$ 0.01
Common Stock
Description Of Business And Summary Of Significant Accounting Policies [Line Items]
Stockholders' deficit								$ 2,000	$ 2,000	$ 2,000				$ 1,000
Triumph Business Capital [Member] | Letter of Intent and Memo of Understanding [Member]
Description Of Business And Summary Of Significant Accounting Policies [Line Items]
Proceeds from transportation settlements	$ 1,600,000			$ 17,500,000	$ 7,100,000
Transportation settlements fund held in reserve.	$ 600,000
Funds held in reserve against advances							$ 800,000
Repayment of factor advances							11,000,000.0
Amount retained to reduce outstanding principal amount of factoring advances							$ 6,900,000
Number of installments for repayment | Installment							48
Frequency of payments							monthly
Date of first required payment							Jan. 01, 2022
Funds held in reserve against advances utilized					$ 3,000,000.0
USPS [Member]
Description Of Business And Summary Of Significant Accounting Policies [Line Items]
Compensation received for work performed							$ 28,500,000
Payments for transportation settlements		$ 17,500,000	$ 7,100,000
Additional settlement payment including rate adjustments under settlement agreement								3,800,000
Other operating revenue							34,800,000
USPS [Member] | Accounts Receivable [Member] | Customer Concentration Risk [Member]
Description Of Business And Summary Of Significant Accounting Policies [Line Items]
Percentage of concentrations of credit risk									47.00%	69.00%
USPS [Member] | Revenue Benchmark [Member] | Customer Concentration Risk [Member]
Description Of Business And Summary Of Significant Accounting Policies [Line Items]
Percentage of concentrations of credit risk									89.00%	87.00%
Bridge and Executive Loan [Member] | Subsequent Event [Member]
Description Of Business And Summary Of Significant Accounting Policies [Line Items]
Loan obtained						$ 9,800,000
Note Purchase Agreements and Releases [Member]
Description Of Business And Summary Of Significant Accounting Policies [Line Items]
Principal amount											$ 4,000,000.0
Notes payable in cash											$ 600,000
Warrants to purchase shares of common stock | shares											1,481,453
Warrants, exercise price | $ / shares											$ 0.01
Note Purchase Agreements and Releases [Member] | Maximum [Member]
Description Of Business And Summary Of Significant Accounting Policies [Line Items]
Warrants to purchase shares of common stock | shares											1,200,000
Warrants, exercise price | $ / shares											$ 2.50
Note Purchase Agreements and Releases [Member] | Warrant Exercise Price of 2.50 Per Share [Member]
Description Of Business And Summary Of Significant Accounting Policies [Line Items]
Warrants, exercise price | $ / shares											$ 2.50
Note Purchase Agreements and Releases [Member] | Warrant Exercise Price of 2.50 Per Share [Member] | Maximum [Member]
Description Of Business And Summary Of Significant Accounting Policies [Line Items]
Warrants to purchase shares of common stock | shares											950,000
Note Purchase Agreements and Releases [Member] | Warrant Exercise Price of 0.01 Per Share [Member]
Description Of Business And Summary Of Significant Accounting Policies [Line Items]
Warrants, exercise price | $ / shares											$ 0.01
Note Purchase Agreements and Releases [Member] | Warrant Exercise Price of 0.01 Per Share [Member] | Maximum [Member]
Description Of Business And Summary Of Significant Accounting Policies [Line Items]
Warrants to purchase shares of common stock | shares											250,000
Paycheck Protection Program Loan, CARES Act [Member]
Description Of Business And Summary Of Significant Accounting Policies [Line Items]
Principal amount													$ 10,000,000.0
Loan Agreement [Member] | Main Street Loan [Member]
Description Of Business And Summary Of Significant Accounting Policies [Line Items]
Principal amount								17,000,000.0		$ 17,000,000.0
Principal amount due							$ 16,700,000	$ 33,600,000		33,600,000
Settlement Agreement [Member] | USPS [Member]
Description Of Business And Summary Of Significant Accounting Policies [Line Items]
Deferred gain recognized										$ 6,300,000
CNG [Member]
Description Of Business And Summary Of Significant Accounting Policies [Line Items]
Number of fueling stations | Station									1
Number of compressed natural gas stations | Station									3