Defined Contribution Plans

12 Months Ended

Sep. 30, 2021

Compensation And Retirement Disclosure [Abstract]

Defined Contribution Plans

10.  Defined Contribution Plans

The Company has a 401(k) retirement and savings plan for the benefit of qualifying U.S. employees, and a defined contribution Personal Retirement Savings Account plan for the benefit of qualifying Ireland employees. For U.S. employees, the Company matches 50% of employee contributions on the first 6% of eligible compensation. For eligible Ireland employees, the Company makes contributions of up to 8% of eligible compensation on employee contributions of up to 6% of eligible compensation. Expense recognized for Company contributions to defined contribution plans totaled $1.1 million, $1.0 million and $0.9 million in fiscal 2021, 2020 and 2019, respectively.