Benefits and Pension Plans - Fair Value (Details) - USD ($) $ in Thousands	Aug. 31, 2023	Aug. 31, 2022	Aug. 31, 2021	Aug. 31, 2020
Pensions and Other Postretirement Benefits
Fair value of plan assets	$ 7,368	$ 7,802	$ 9,280	$ 8,168
Equity securities
Pensions and Other Postretirement Benefits
Fair value of plan assets	3,389	3,667
Debt securities
Pensions and Other Postretirement Benefits
Fair value of plan assets	3,979	4,135
Quoted prices in active markets (Level 1)
Pensions and Other Postretirement Benefits
Fair value of plan assets	7,368	7,802
Quoted prices in active markets (Level 1) \| Equity securities
Pensions and Other Postretirement Benefits
Fair value of plan assets	3,389	3,667
Quoted prices in active markets (Level 1) \| Debt securities
Pensions and Other Postretirement Benefits
Fair value of plan assets	$ 3,979	$ 4,135

Amount of asset segregated and restricted to provide benefit under defined benefit plan. Asset includes, but is not limited to, stock, bond, other investment, earning from investment, and contribution by employer and employee.

CHASE CORP 10-K