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Debt - Aggregate maturities of notes payable for equipment purchases and interest rates (Details) - Geospace Notes - USD ($) $ in Thousands	Sep. 30, 2025	Sep. 29, 2025
Notes payable
October 2025 - September 2026	$ 2,306
October 2026 - September 2027	2,516
October 2027 - September 2028	2,631
Obligations under notes payable	$ 7,453
Interest rates on notes (as a percent)	8.75%	8.75%

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Contractual interest rate for funds borrowed, under the debt agreement.

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