Three months ended

Nine months ended

($ in thousands)

May 31,
2022

May 31,
2021

May 31,
2022

May 31,
2021

Product warranty accrual balance, beginning of period

$

12,818

$

11,786

$

12,736

$

10,765

Liabilities accrued for warranties during the period

3,317

2,883

7,536

6,864

Warranty claims paid during the period

(2,600

)

(1,062

)

(6,601

)

(4,081

)

Changes in estimates

(58

)

—

(194

)

59

Product warranty accrual balance, end of period

$

13,477

$

13,607

$

13,477

$

13,607