Changes in Projected Benefit Obligations, Fair Value of Plan Assets and Funded Status of Defined Benefit Pension Plans (Detail) - USD ($) $ in Thousands	12 Months Ended
	Aug. 31, 2026	Aug. 31, 2025	Aug. 31, 2024
Reconciliation of plan assets:
Fair value of plan assets at beginning of year	$ 28,000
Fair value of plan assets at end of year	27,100	$ 28,000
Amount of benefits expected to be paid in fiscal 2024	400
Amount of benefits expected to be paid in fiscal 2025	400
Amount of benefits expected to be paid in, fiscal 2026	400
Fixed Income Securities
Reconciliation of plan assets:
Fair value of plan assets at beginning of year	14,600
Fair value of plan assets at end of year	19,500	14,600
Foreign Plan Member
Reconciliation of benefit obligations:
Benefit obligation at beginning of year	8,200	8,500
Interest cost	400	400	$ 400
Defined Benefit Plan, Benefit Obligation, Actuarial Gain (Loss)	(700)	900
Defined Benefit Plan, Benefit Obligation, Benefits Paid	(300)	(300)
Defined Benefit Plan, Benefit Obligation, Payment for Settlement	(100)	0
Defined Benefit Plan, Benefit Obligation, Foreign Currency Translation Gain (Loss)	(100)	(400)
Benefit obligation at end of year	7,500	8,200	8,500
Defined Benefit Plan, Service Cost	100	100	200
Reconciliation of plan assets:
Fair value of plan assets at beginning of year	6,500	6,500
Defined Benefit Plan, Plan Assets, Increase (Decrease) for Actual Return (Loss)	200	(100)
Defined Benefit Plan, Plan Assets, Contributions by Employer	100	100
Defined Benefit Plan, Plan Assets, Benefits Paid	(300)	(300)
Defined Benefit Plan, Plan Assets, Payment for Settlement	100	0
Defined Benefit Plan, Plan Assets, Foreign Currency Translation Gain (Loss)	0	300
Fair value of plan assets at end of year	6,400	6,500	6,500
Funded status of the plans (underfunded)	(1,100)	(1,700)
Domestic Plan Member
Reconciliation of benefit obligations:
Benefit obligation at beginning of year	30,200	32,900
Interest cost	1,500	1,600	1,700
Defined Benefit Plan, Benefit Obligation, Actuarial Gain (Loss)	(1,100)	(900)
Defined Benefit Plan, Benefit Obligation, Benefits Paid	(3,100)	(3,400)
Benefit obligation at end of year	27,500	30,200	32,900
Reconciliation of plan assets:
Fair value of plan assets at beginning of year	27,900	28,500
Defined Benefit Plan, Plan Assets, Increase (Decrease) for Actual Return (Loss)	1,400	1,600
Defined Benefit Plan, Plan Assets, Contributions by Employer	900	1,200
Defined Benefit Plan, Plan Assets, Benefits Paid	(3,100)	(3,400)
Fair value of plan assets at end of year	27,100	27,900	$ 28,500
Funded status of the plans (underfunded)	(400)	$ (2,300)
Amount of benefits expected to be paid in fiscal 2024	3,000
Amount of benefits expected to be paid in fiscal 2025	2,900
Amount of benefits expected to be paid in, fiscal 2026	$ 2,700