Segment and Geographic Information - Summary of Company's Segment Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Segment Reporting Information [Line Items]
Revenue	$ 89,253	$ 94,864
Income (loss) from operations	(23,136)	(16,871)
Depreciation and amortization expenses	19,560	20,777
Impairment, inventory obsolescence and stock-based compensation expenses	9,694	4,971
Interest income	976	1,441
Interest expense	65
Operating Segments | Oil and Gas Markets
Segment Reporting Information [Line Items]
Revenue	49,141	52,252
Income (loss) from operations	(7,539)	(16,229)
Depreciation and amortization expenses	16,947	18,199
Impairment, inventory obsolescence and stock-based compensation expenses	3,612	3,850
Interest income	850	1,409
Interest expense	65
Operating Segments | Adjacent Markets Product and Services Revenue
Segment Reporting Information [Line Items]
Revenue	39,171	32,419
Income (loss) from operations	6,021	6,423
Depreciation and amortization expenses	743	440
Impairment, inventory obsolescence and stock-based compensation expenses	932	223
Interest income		1
Operating Segments | Emerging Markets
Segment Reporting Information [Line Items]
Revenue	711	10,193
Income (loss) from operations	(9,128)	5,033
Depreciation and amortization expenses	1,068	1,209
Impairment, inventory obsolescence and stock-based compensation expenses	4,423	100
Corporate
Segment Reporting Information [Line Items]
Revenue	230
Income (loss) from operations	(12,490)	(12,098)
Depreciation and amortization expenses	802	929
Impairment, inventory obsolescence and stock-based compensation expenses	727	798
Interest income	$ 126	$ 31