Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2021
Income Statement [Abstract]
Revenue, net	$ 113,315	$ 106,298	$ 85,205
Cost of sales	73,118	66,787	50,675
Intangible asset impairment	4,645
Gross profit	35,552	39,511	34,530
Selling, general and administrative	42,002	28,300	24,740
Research, development and engineering	7,311	6,390	5,979
Gain on sale of fixed assets		(12,465)
Intangible asset impairment	544
Severance expense	665	0	86
Operating (loss) income	(14,970)	17,286	3,725
Interest income	366	210	53
Interest expense	(520)	(164)	(239)
Foreign currency (loss) gain	(89)	1,066	(389)
Other	31	387	284
(Loss) income before income taxes	(15,182)	18,785	3,434
Income tax (benefit) provision	(2,600)	1,418	1,926
Net (loss) income	$ (12,582)	$ 17,367	$ 1,508
(Loss) Income Per Share:
Net (loss) income per basic share	$ (0.89)	$ 1.24	$ 0.11
Net income (loss) per diluted share	$ (0.89)	$ 1.22	$ 0.11
Weighted average shares outstanding - Basic	14,065	14,014	14,189
Weighted average shares outstanding - Diluted	14,065	14,184	14,340