Condensed Consolidated Statements of Stockholders' Equity (Unaudited) - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Retained Earnings	Treasury Stock	Accumulated Other Comprehensive Income/(Loss)
Balance (in shares) at Sep. 30, 2022		12,588,000
Balance Treasury Stock (in shares) at Sep. 30, 2022					(806,000)
Balance at Sep. 30, 2022	$ 297,206	$ 126	$ 67,439	$ 283,638	$ 24,999	$ (28,998)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	1,162			1,162
Foreign currency translation adjustments	2,178					2,178
Stock-based compensation (in shares)		53,000
Stock-based compensation	1,307		1,307
Shares withheld in lieu of employee tax withholding	(423)		(423)
Dividends	(3,176)		131	(3,307)
Gain on cash flow commodity hedge	218					218
Balance (in shares) at Dec. 31, 2022		12,641,000
Balance Treasury Stock (in shares) at Dec. 31, 2022					(806,000)
Balance at Dec. 31, 2022	$ 298,472	$ 126	68,454	281,493	$ 24,999	(26,602)
Balance (in shares) at Sep. 30, 2023	11,861,983	12,668,000
Balance Treasury Stock (in shares) at Sep. 30, 2023	(806,018)				(806,000)
Balance at Sep. 30, 2023	$ 345,026	$ 127	71,526	325,281	$ 24,999	(26,909)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	24,085			24,085
Foreign currency translation adjustments	3,085					3,085
Stock-based compensation (in shares)		98,000
Stock-based compensation	1,657		1,657
Shares withheld in lieu of employee tax withholding	(4,752)		(4,752)
Dividends	(2,781)		423	(3,204)
Gain on cash flow commodity hedge	$ 0
Balance (in shares) at Dec. 31, 2023	11,959,918	12,766,000
Balance Treasury Stock (in shares) at Dec. 31, 2023	(806,018)				(806,000)
Balance at Dec. 31, 2023	$ 366,320	$ 127	$ 68,854	$ 346,162	$ 24,999	$ (23,824)