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Stockholders' Equity (Details)	6 Months Ended
Stockholders' Equity (Details)	Jun. 30, 2022 vote
Equity [Abstract]
Number of votes per share of common stock	1

X

- Definition

Number of Votes Per Share of Common Stock

+ References

No definition available.

+ Details

Name:	angn_NumberOfVotesPerShareOfCommonStock
Namespace Prefix:	angn_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

X

- References

No definition available.

+ Details

Name:	us-gaap_EquityAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration