Summary of Company's Segment Information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Segment Reporting Information [Line Items]
Revenue	$ 22,873	$ 21,270	$ 66,871	$ 55,161
Income (loss) from operations	(3,335)	(5,136)	(8,376)	(19,963)
Operating Segments | Oil and Gas Markets
Segment Reporting Information [Line Items]
Revenue	14,449	12,345	44,122	31,671
Income (loss) from operations	(280)	(4,122)	451	(15,552)
Operating Segments | Adjacent Markets
Segment Reporting Information [Line Items]
Revenue	8,234	8,778	22,128	23,058
Income (loss) from operations	1,717	1,428	4,350	3,841
Operating Segments | Emerging Markets
Segment Reporting Information [Line Items]
Revenue	11		145
Income (loss) from operations	(1,388)		(3,760)
Corporate
Segment Reporting Information [Line Items]
Revenue	179	147	476	432
Income (loss) from operations	$ (3,384)	$ (2,442)	$ (9,417)	$ (8,252)