Annual report pursuant to Section 13 and 15(d)

Changes in Projected Benefit Obligations, Fair Value of Plan Assets and Funded Status of Defined Benefit Pension Plans (Detail)

v3.20.2
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, 2020
Aug. 31, 2019
Aug. 31, 2018
Reconciliation of plan assets:      
Fair value of plan assets at beginning of year $ 40,412    
Fair value of plan assets at end of year 39,935 $ 40,412  
Foreign Plan Member      
Reconciliation of benefit obligations:      
Benefit obligation at beginning of year 15,103 13,056  
Interest cost 171 257 $ 278
Defined Benefit Plan, Benefit Obligation, Actuarial Gain (Loss) 495 (2,594)  
Defined Benefit Plan, Benefit Obligation, Benefits Paid (300) (421)  
Defined Benefit Plan, Benefit Obligation, Increase (Decrease) for Plan Amendment 0 89  
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Curtailment (1,687) (107)  
Defined Benefit Plan, Benefit Obligation, Foreign Currency Translation Gain (Loss) 1,221 (815)  
Benefit obligation at end of year 14,297 15,103 13,056
Defined Benefit Plan, Service Cost 284 450 440
Reconciliation of plan assets:      
Fair value of plan assets at beginning of year 8,118 7,902  
Defined Benefit Plan, Plan Assets, Increase (Decrease) for Actual Return (Loss) 69 752  
Defined Benefit Plan, Plan Assets, Contributions by Employer 323 374  
Defined Benefit Plan, Plan Assets, Benefits Paid (300) (421)  
Defined Benefit Plan, Plan Assets, Foreign Currency Translation Gain (Loss) 770 (489)  
Fair value of plan assets at end of year 8,980 8,118 7,902
Funded status of the plans (underfunded) (5,317) (6,985)  
Domestic Plan Member      
Reconciliation of benefit obligations:      
Benefit obligation at beginning of year 47,400 43,280  
Interest cost 1,331 1,694 1,633
Defined Benefit Plan, Benefit Obligation, Actuarial Gain (Loss) 4,131 5,339  
Defined Benefit Plan, Benefit Obligation, Benefits Paid (3,222) (2,913)  
Benefit obligation at end of year 49,640 47,400 43,280
Reconciliation of plan assets:      
Fair value of plan assets at beginning of year 40,412 40,244  
Defined Benefit Plan, Plan Assets, Increase (Decrease) for Actual Return (Loss) 2,562 2,972  
Defined Benefit Plan, Plan Assets, Contributions by Employer 183 108  
Defined Benefit Plan, Plan Assets, Benefits Paid (3,222) (2,912)  
Fair value of plan assets at end of year 39,935 40,412 $ 40,244
Funded status of the plans (underfunded) $ (9,705) $ (6,988)