Leases - Reconciliation of future undiscounted cash flows to the operating and finance lease liabilities, and the related ROU assets (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Sep. 30, 2024
Operating Leases
2025/2026	$ 7,951	$ 6,394
2026/2027	7,709	5,118
2027/2028	7,574	4,813
2028/2029	6,134	4,517
2029/2030 and thereafter	33,540	29,765
Total minimum lease payments	62,908	50,607
Less: amounts representing interest	12,611	11,026
Present value of net minimum lease payments	50,297	39,581
Less: current portion of lease obligations	5,894	4,771
Non-current portion of lease obligations	44,403	34,810
ROU assets	$ 47,707	$ 37,476
Location of operating lease liabilities included on Consolidated Balance Sheets	Accrued other expenses	Accrued other expenses
Finance Leases
2025/2026	$ 2,297	$ 2,233
2026/2027	2,357	2,297
2027/2028	2,417	2,357
2028/2029	2,478	2,417
2029/2030 and thereafter	11,575	14,053
Total minimum lease payments	21,124	23,357
Less: amounts representing interest	4,571	5,373
Present value of net minimum lease payments	16,553	17,984
Less: current portion of lease obligations	1,554	1,431
Non-current portion of lease obligations	14,999	16,553
ROU assets	$ 12,194	$ 13,683
Location of finance lease liabilities included on Consolidated Balance Sheets	Accrued other expenses	Accrued other expenses
Location of finance lease ROU assets included on Consolidated Balance Sheets	Property, Plant and Equipment, Net	Property, Plant and Equipment, Net

Amount of lessee's undiscounted obligation for lease payment for finance lease to be paid for fifth fiscal year and thereafter following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

No definition available.