Debt - Financial covenants (Details) - Credit Agreement $ in Thousands				3 Months Ended	9 Months Ended	12 Months Ended
	Jun. 28, 2024	Apr. 24, 2024	Apr. 23, 2024	Jun. 30, 2023	Sep. 30, 2024 USD ($)	Sep. 30, 2025	Jun. 30, 2025 USD ($)	Mar. 31, 2025 USD ($)	Dec. 31, 2024 USD ($)	Sep. 30, 2024 USD ($)
Debt covenants
Maximum number of consecutive days liquidity value may fall below the minimum requirement					3 days
Minimum
Debt covenants
Consolidated fixed charge coverage ratio			1.10			1.10
Revolver loan turnover ratio				2.50
Minimum EBITDA requirement							$ 31,691	$ 35,032	$ 37,188	$ 33,260
Liquidity value					$ 20,000
Maximum
Debt covenants
Term loan loan-to-value ratio				60.00%
Credit Agreement Amendment Three | Minimum
Debt covenants
Consolidated fixed charge coverage ratio		1.00
Credit Agreement Amendment Three | Maximum
Debt covenants
Maximum number of consecutive days liquidity value may fall below the minimum requirement	3 days