Summary of Significant Accounting Policies (Details) T in Millions	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2023 USD ($) shares	Sep. 30, 2022 USD ($) shares	Sep. 30, 2023 USD ($) segment item T shares	Sep. 30, 2022 USD ($) T shares	Dec. 31, 2022 USD ($)	Jun. 30, 2022 USD ($)	Mar. 31, 2022 USD ($)
Significant accounting policies
Number of reportable segments | segment			1
Stepdown from baseline levels, final rule			10.00%
Cumulative reduction in baseline, subsequent allowance			40.00%
Allocation allowance received | T			3	3
Allocation allowance received as a percentage of total HFC consumption			1.00%
Number of reporting unit | item			1
Goodwill impairment loss			$ 0		$ 0
Cylinder deposit liability	$ 16,600,000		$ 16,600,000		13,600,000
Deferred tax assets, valuation allowance		$ 3,500,000		$ 3,500,000	3,500,000	$ 11,600,000	$ 15,100,000
Options excluded from the calculation of diluted shares | shares	7,444	2,743	7,444	2,980
Federal
Significant accounting policies
Operating loss carryforwards	$ 0		$ 0
Current year utilization comprise of deferred tax					$ 29,300,000
State
Significant accounting policies
Operating loss carryforwards	1,800,000		$ 1,800,000
Customer Concentration Risk | No Customer | Revenue from Contract with Customer
Significant accounting policies
Concentration risk percentage			10.00%
Customer Concentration Risk | One Customer | Revenue from Contract with Customer
Significant accounting policies
Concentration risk percentage				10.00%
Customer Concentration Risk | One Customer | Accounts Receivable
Significant accounting policies
Accounts receivable	$ 19,700,000		$ 19,700,000