Amount represents the information about the loan from working capital.

No definition available.

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- Definition

Amount of maximum borrowing capacity of related party promissory note.

+ References

No definition available.

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- Definition

Maximum amount of Loans that may be convertible into warrants of the post-Business Combination entity.

+ References

No definition available.

+ Details

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- Definition

The cash inflow from a advances made from related parties where one party can exercise control or significant influence over another party; including affiliates, owners or officers and their immediate families, pension trusts, and so forth. Alternate caption: Proceeds from Advances from Affiliates.

+ References

No definition available.

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- Definition

Per unit price of warrants issued by the company.

+ References

No definition available.

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- Definition

Amount for accounts payable to related parties. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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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.

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The cash outflow for the payment of a long-term borrowing made from a related party where one party can exercise control or significant influence over another party; including affiliates, owners or officers and their immediate families, pension trusts, and so forth. Alternate caption: Payments for Advances from Affiliates.

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Related Party Transactions - Additional information (Details) - USD ($)			1 Months Ended		3 Months Ended	12 Months Ended		24 Months Ended
	Aug. 26, 2020	Aug. 20, 2020	Aug. 31, 2020	Jul. 31, 2020	Mar. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2019	Nov. 08, 2020	Nov. 08, 2018
Related Party Transaction [Line Items]
Accounts payable - related party					$ 321,000	$ 399,000	$ 190,000	$ 190,000
Star Peak Energy Transition Corp [Member]
Related Party Transaction [Line Items]
Maximum amounts of transaction					10,000	10,000			$ 300,000	$ 300,000
Repayment of promissory note - related party		$ 292,000	$ 292,000	$ 235,000		292,301	117,699
Maximum loans convertible into warrants					$ 1,500,000	$ 1,500,000
Price of warrants (in dollars per share)					$ 1.50	$ 1.50
Loans from working capital					$ 0	$ 0	$ 0	0
Accounts payable - related party					0	50,000
Star Peak Energy Transition Corp [Member] \| General and administrative
Related Party Transaction [Line Items]
Repayment of promissory note - related party					30,000	50,000
Star Peak Energy Transition Corp [Member] \| Promissory Note with Related Party
Related Party Transaction [Line Items]
Proceeds from Related Party Advances								182,000
Repayment of promissory note - related party								$ 125,000
Star Peak Energy Transition Corp [Member] \| Private Placement
Related Party Transaction [Line Items]
Proceeds from Related Party Advances					$ 10,100,000	$ 10,100,000
Star Peak Energy Transition Corp [Member] \| Sponsor \| Private Placement
Related Party Transaction [Line Items]
Proceeds from Related Party Advances	$ 700,000