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Employee Benefit Plans (Tables)
 12 Months Ended
Aug. 31, 2021
Pension Plans, Defined Benefit  
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]  
Changes in Projected Benefit Obligations, Fair Value of Plan Assets The following table provides detail of changes in the projected benefit obligations, the fair value of plan assets and the funded status of the Company’s U.S. defined benefit pension plans as of the respective August 31 measurement date (in thousands):
20212020
Reconciliation of benefit obligations:
Benefit obligation at beginning of year$49,640 $47,400 
Interest cost1,156 1,331 
Actuarial (gain) loss(729)4,131 
Benefits paid(2,920)(3,222)
Benefit obligation at end of year$47,147 $49,640 
Reconciliation of plan assets:
Fair value of plan assets at beginning of year$39,935 $40,412 
Actual return on plan assets1,990 2,562 
Company contributions691 183 
Benefits paid from plan assets(2,920)(3,222)
Fair value of plan assets at end of year39,696 39,935 
Funded status of the plans (underfunded)$(7,451)$(9,705)
Net Periodic Benefit Costs
The following table provides detail on the Company’s domestic net periodic benefit expense (in thousands):
 Year ended August 31,
 202120202019
Interest cost$1,156 $1,331 $1,694 
Expected return on assets(1,610)(1,770)(2,208)
Amortization of actuarial loss1,322 1,212 990 
Net periodic benefit expense$868 $773 $476 
Weighted Average Assumption used to Determine Benefit Obligations and Net Periodic Benefit Cost
Weighted-average assumptions used to determine U.S. pension plan obligations as of August 31 and weighted-average assumptions used to determine net periodic benefit cost for the years ended August 31 are as follows:
202120202019
Assumptions for benefit obligations:
Discount rate2.55 %2.40 %2.90 %
Assumptions for net periodic benefit cost:
Discount rate2.40 %2.90 %4.05 %
Expected return on plan assets4.20 %4.60 %5.75 %
U.S. Pension Plan Investment Allocations by Asset Category
The U.S. pension plan investment allocations by asset category were as follows (in thousands):
 Year Ended August 31,
 2021%2020%
Cash and cash equivalents$— — %$— — %
Income receivable49 0.1 55 0.1 
Fixed income securities:
U.S. Treasury Securities4,825 12.2 5,206 13.0 
Corporate Bonds— — — — 
Mutual funds23,564 59.3 23,091 57.9 
28,389 71.5 28,297 70.9 
Equity securities:
Mutual funds11,258 28.4 11,583 29.0 
Total plan assets$39,696 100.0 %$39,935 100.0 %
Other Pension Plans, Defined Benefit  
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]  
Changes in Projected Benefit Obligations, Fair Value of Plan Assets The following table provides detail of changes in the projected benefit obligations, the fair value of plan assets and the funded status of the Company’s significant foreign defined benefit pension plans as of the respective August 31 measurement date (in thousands):
20212020
Reconciliation of benefit obligations:
Benefit obligation at beginning of year$14,297 $15,103 
Employer service costs116 284 
Interest cost198 171 
Actuarial loss/(gain)51 (495)
Benefits paid(293)(300)
Plan amendments— — 
Curtailments— (1,687)
Currency impact52 1,221 
Benefit obligation at end of year$14,421 $14,297 
Reconciliation of plan assets:
Fair value of plan assets at beginning of year$8,980 $8,118 
Actual return on plan assets532 69 
Company contributions56 323 
Benefits paid from plan assets(293)(300)
Currency impact121 770 
Fair value of plan assets at end of year9,396 8,980 
Funded status of the plans (underfunded)$(5,025)$(5,317)
The following table provides detail on the Company’s foreign net periodic benefit expense (in thousands):
 Year ended August 31,
 202120202019
Employer service costs$116 $284 $450 
Interest cost198 171 257 
Expected return on assets(347)(357)(345)
Amortization of net prior service credit4 (18)(65)
Amortization of net loss139 205 263 
Income of special events— (728)(56)
Net periodic benefit expense (income)$110 $(443)$504