Amount of transactions with related party during the financial reporting period.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 850
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 850
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39603-107864

Name:	us-gaap_RelatedPartyTransactionAmountsOfTransaction
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

RELATED PARTY TRANSACTIONS, Administrative Support Agreement (Q1) (Details) - Sponsor [Member] - Administrative Support Agreement [Member] - USD ($)		3 Months Ended	6 Months Ended
	Sep. 14, 2020	Mar. 31, 2021	Dec. 31, 2020
Related Party Transactions [Abstract]
Related party expense		$ 30,000	$ 40,000
Maximum [Member]
Related Party Transactions [Abstract]
Related party transaction	$ 10,000