Royalty Obligation - Additional Information (Detail) - USD ($)		3 Months Ended	6 Months Ended
	Jan. 31, 2018	Jul. 31, 2025	Jul. 31, 2025	Jan. 31, 2025
Guaranteed Minimum Royalty Payments			$ 13,500,000
Royalty Obligation, Current		$ 1,218,000	1,218,000	$ 1,358,000
Royalty Obligation Non Current		858,000	858,000	1,106,000
Accrued Royalties, Current, Excess Royalty Payment Due		556,000	556,000	$ 691,000
Honeywell Asset Purchase and License Agreement [Member]
Payment Term Period	10 years
Minimum Royalty Payment Obligation	$ 15,000,000
Royalty Obligation, Current		1,000,000	1,000,000
Royalty Obligation Non Current		500,000	500,000
Excess Royalty Payments		600,000	1,100,000
Accrued Royalties, Current, Excess Royalty Payment Due		1,200,000	1,200,000
Accrued Royalties Current Excess Royalty Payments Due		1,100,000	1,100,000
Royalty guarantee commitment amount due current		500,000	500,000
Royalty expense			200,000
Honeywell Asset Purchase and License Agreement [Member] \| Royalty Payments Due Remainder of Fiscal Year [Member]
Royalty guarantee commitement amount		100,000	100,000
Honeywell Asset Purchase and License Agreement [Member] \| Royalty Payments Due In Next Twelve Months [Member]
Royalty guarantee commitement amount		200,000	200,000
Honeywell Asset Purchase and License Agreement [Member] \| Royalty Payments Due Year Two [Member]
Royalty guarantee commitement amount		233,000	233,000
Honeywell Asset Purchase and License Agreement [Member] \| Royalty Payments Due Year Three [Member]
Royalty guarantee commitement amount		233,000	233,000
Honeywell Asset Purchase and License Agreement [Member] \| Royalty Payments Due Year Four [Member]
Royalty guarantee commitement amount		$ 234,000	$ 234,000

AstroNova, Inc. 10-Q