XML 43 R36.htm IDEA: XBRL DOCUMENT v3.26.1

Stock-based Compensation (Tables)

3 Months Ended

Mar. 31, 2026

Share-Based Payment Arrangement [Abstract]

Summary of Restricted And Performance Stock Granted, Vested and Issued

The following table shows the number of stock awards that were granted, vested, and issued during the three months ended March 31, 2026:

	Restricted Stock Units								Performance Stock Units
	Number of units				Weighted average grant date fair value				Number of units				Weighted average grant date fair value
Unvested units as of December 31, 2025		465,919			$	6.63				249,410			$	8.69
Granted		334,360				6.91				577,257				6.85
Vested - issued		(180,084	)			7.77				(87,189	)			15.27
Vested - unissued		(21,900	)			4.75				—				—
Unvested units as of March 31, 2026		598,295			$	6.51				739,478			$	6.48

X

- Definition

Tabular disclosure of restricted stock units and performance stock units activity.

+ References

No definition available.

+ Details

Name:	altg_ScheduleOfRestrictedStockUnitsAndPerformanceStockUnitsActivityTableTextBlock
Namespace Prefix:	altg_
Data Type:	dtr-types:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- References

No definition available.

+ Details

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