Significant Accounting Policies - Concentration of Credit Risk, Cash and Cash Equivalents and Class A common stock subject to possible redemption (Details) - USD ($)	Sep. 30, 2020	Dec. 31, 2019
Significant Accounting Policies
Cash equivalents held in the Trust Account	$ 0
Shares subject to possible redemption	21,989,872	0

The number of shares that would be issued, determined under the conditions specified in the contract, if the settlement were to occur at the reporting date.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 480
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=109262807&loc=d3e22047-110879

Name:	us-gaap_SharesSubjectToMandatoryRedemptionSettlementTermsNumberOfShares
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant