Segment Information - Summary of Company's Segment Information (Details) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Segment Reporting Information [Line Items]
Revenue	$ 28,460	$ 17,705
Income (loss) from operations	(1,459)	(7,823)
Operating Segments | Oil and Gas Markets
Segment Reporting Information [Line Items]
Revenue	12,763	11,509
Income (loss) from operations	(5,986)	(3,894)
Operating Segments | Adjacent Markets
Segment Reporting Information [Line Items]
Revenue	6,900	6,099
Income (loss) from operations	1,260	851
Operating Segments | Emerging Markets
Segment Reporting Information [Line Items]
Revenue	8,797	97
Income (loss) from operations	6,479	(1,365)
Corporate
Segment Reporting Information [Line Items]
Income (loss) from operations	$ (3,212)	$ (3,415)