XML 64 R56.htm IDEA: XBRL DOCUMENT v3.25.3

Net Loss per Share - Additional Information (Details) - shares	3 Months Ended		6 Months Ended
	Sep. 26, 2025	Sep. 27, 2024	Sep. 26, 2025	Sep. 27, 2024
Earnings Per Share [Abstract]
Dilutive effect of common stock equivalents (in shares)	1,231,666	0	0	0

X

- Definition

Weighted Average Number Issuable Shares Outstanding Adjustment

+ References

No definition available.

+ Details

Name:	algm_WeightedAverageNumberIssuableSharesOutstandingAdjustment
Namespace Prefix:	algm_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

X

- References

No definition available.

+ Details

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