Segment Information - Summary of Company's Segment Information (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2021	Mar. 31, 2020
Segment Reporting Information [Line Items]
Revenue	$ 23,892	$ 25,907	$ 52,352	$ 43,612
Income (loss) from operations	(8,176)	(3,489)	(9,635)	(11,312)
Operating Segments | Oil and Gas Markets
Segment Reporting Information [Line Items]
Revenue	16,132	18,434	28,895	29,943
Income (loss) from operations	(5,465)	1,310	(11,451)	(2,584)
Operating Segments | Adjacent Markets
Segment Reporting Information [Line Items]
Revenue	7,595	7,101	14,495	13,200
Income (loss) from operations	1,562	1,214	2,822	2,065
Operating Segments | Emerging Markets
Segment Reporting Information [Line Items]
Revenue	165	372	8,962	469
Income (loss) from operations	(1,189)	(2,500)	5,290	(3,865)
Corporate
Segment Reporting Information [Line Items]
Income (loss) from operations	$ (3,084)	$ (3,513)	$ (6,296)	$ (6,928)