Segment Information - Summary of Company's Segment Information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Segment Reporting Information [Line Items]
Revenue	$ 23,083	$ 22,703	$ 75,435	$ 66,315
Income (loss) from operations	(2,439)	(2,564)	(12,074)	(13,876)
Operating Segments | Oil and Gas Markets
Segment Reporting Information [Line Items]
Revenue	12,649	17,509	41,544	47,452
Income (loss) from operations	(1,807)	1,496	(13,258)	(1,088)
Operating Segments | Adjacent Markets
Segment Reporting Information [Line Items]
Revenue	9,373	5,106	23,868	18,306
Income (loss) from operations	1,997	605	4,819	2,670
Operating Segments | Emerging Markets
Segment Reporting Information [Line Items]
Revenue	1,061	88	10,023	557
Income (loss) from operations	(4)	(1,170)	5,286	(5,035)
Corporate
Segment Reporting Information [Line Items]
Income (loss) from operations	$ (2,625)	$ (3,495)	$ (8,921)	$ (10,423)