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, 2021		12,498,000
Balance Treasury Stock (in shares) at Sep. 30, 2021					(806,000)
Balance at Sep. 30, 2021	$ 301,223	$ 125	$ 63,948	$ 282,505	$ 24,999	$ (20,356)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(2,846)			(2,846)
Foreign currency translation adjustments	54					54
Stock-based compensation (in shares)		72,000
Stock-based compensation	1,008	$ 1	1,007
Shares withheld in lieu of employee tax withholding	(660)		(660)
Dividends	(3,200)		69	(3,269)
Balance (in shares) at Dec. 31, 2021		12,570,000
Balance Treasury Stock (in shares) at Dec. 31, 2021					(806,000)
Balance at Dec. 31, 2021	295,579	$ 126	64,364	276,390	$ 24,999	(20,302)
Balance (in shares) at Sep. 30, 2021		12,498,000
Balance Treasury Stock (in shares) at Sep. 30, 2021					(806,000)
Balance at Sep. 30, 2021	301,223	$ 125	63,948	282,505	$ 24,999	(20,356)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(4,063)
Foreign currency translation adjustments	956
Gain on cash flow commodity hedge	0
Balance (in shares) at Mar. 31, 2022		12,587,000
Balance Treasury Stock (in shares) at Mar. 31, 2022					(806,000)
Balance at Mar. 31, 2022	292,870	$ 126	65,075	272,068	$ 24,999	(19,400)
Balance (in shares) at Dec. 31, 2021		12,570,000
Balance Treasury Stock (in shares) at Dec. 31, 2021					(806,000)
Balance at Dec. 31, 2021	295,579	$ 126	64,364	276,390	$ 24,999	(20,302)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(1,217)			(1,217)
Foreign currency translation adjustments	902					902
Stock-based compensation (in shares)		17,000
Stock-based compensation	711		711
Dividends	(3,105)			(3,105)
Gain on cash flow commodity hedge	0
Balance (in shares) at Mar. 31, 2022		12,587,000
Balance Treasury Stock (in shares) at Mar. 31, 2022					(806,000)
Balance at Mar. 31, 2022	$ 292,870	$ 126	65,075	272,068	$ 24,999	(19,400)
Balance (in shares) at Sep. 30, 2022		12,588,000
Balance Treasury Stock (in shares) at Sep. 30, 2022	(806,018)				(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 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, 2022		12,588,000
Balance Treasury Stock (in shares) at Sep. 30, 2022	(806,018)				(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 loss	9,636
Foreign currency translation adjustments	2,605
Gain on cash flow commodity hedge	$ 329
Balance (in shares) at Mar. 31, 2023		12,667,000
Balance Treasury Stock (in shares) at Mar. 31, 2023	(806,018)				(806,000)
Balance at Mar. 31, 2023	$ 305,795	$ 126	69,955	286,777	$ 24,999	(26,064)
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)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	8,473			8,473
Foreign currency translation adjustments	427					427
Stock-based compensation (in shares)		26,000
Stock-based compensation	1,650		1,650
Shares withheld in lieu of employee tax withholding	(159)		(159)
Dividends	(3,179)		10	(3,189)
Gain on cash flow commodity hedge	$ 111					111
Balance (in shares) at Mar. 31, 2023		12,667,000
Balance Treasury Stock (in shares) at Mar. 31, 2023	(806,018)				(806,000)
Balance at Mar. 31, 2023	$ 305,795	$ 126	$ 69,955	$ 286,777	$ 24,999	$ (26,064)