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Summary of Significant Accounting Policies - Additional Information (Details) | 1 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | ---
Jul. 31, 2016 | Dec. 31, 2021 USD ($) segment item shares | Dec. 31, 2020 USD ($) shares | Dec. 31, 2019 USD ($) | Dec. 31, 2018 USD ($)
Significant Accounting Policies [Line Items] |  |  |  |  |
Number of Reportable Segments | segment |  | 1 |  |  |
Accounts receivable |  | $ 14,223,000 | $ 9,806,000 |  |
Allowance for doubtful accounts |  | 1,600,000 | 1,600,000 |  |
Goodwill impairment loss |  | 0 | 0 |  |
Cylinder deposit liability |  | 12,300,000 | 11,300,000 |  |
Contract term | 5 years |  |  |  |
Contract renewal term | 5 years |  |  |  |
Operating Loss Carryforwards |  | 29,300,000 |  |  |
Deferred Tax Assets, Valuation Allowance |  | 15,149,000 | 19,033,000 | $ 19,000,000.0 | $ 11,300,000
Reduction in valuation allowance |  | 3,900,000 |  |  |
Net Operating Loss Due to additional income |  | 16,800,000 |  |  |
Gross net operating losses |  | $ 7,270,000 | $ 11,963,000 |  |
Options and warrants excluded from the calculation of diluted shares | shares |  | 2,583,523 | 5,329,515 |  |
Stepdown from baseline levels, Final rule |  | 10.00% |  |  |
Cumulative reduction in baseline, Subsequent allowance |  | 40.00% |  |  |
Allocation allowance received by the company | item |  | 3 |  |  |
Allocation allowance received as a percentage of total HFC consumption |  | 1.00% |  |  |
No Expiration [Member] |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |
Operating Loss Carryforwards |  | $ 0 |  |  |
Annual percentage limitation of earnings to which NOLs are subject. |  | 80.00% |  |  |
State and Local Jurisdiction [Member] |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |
Operating Loss Carryforwards |  | $ 21,000,000.0 |  |  |
Customer Concentration Risk [Member] | One Customer | Revenue from Contract with Customer [Member] |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |
Concentration Risk, Percentage |  | 10.00% | 14.00% |  |
Customer Concentration Risk [Member] | One Customer | Accounts Receivable |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |
Accounts Receivable, net |  | $ 3,100,000 | $ 2,900,000 |  |

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