Summary of Company's Segment Information (Details) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Segment Reporting Information [Line Items]
Revenue	$ 17,875	$ 14,644
Income (loss) from operations	(6,063)	(9,605)
Operating Segments | Oil and Gas Markets
Segment Reporting Information [Line Items]
Revenue	11,004	8,039
Income (loss) from operations	(2,601)	(7,673)
Operating Segments | Adjacent Markets
Segment Reporting Information [Line Items]
Revenue	6,635	6,454
Income (loss) from operations	982	1,029
Operating Segments | Emerging Markets
Segment Reporting Information [Line Items]
Revenue	88
Income (loss) from operations	(1,192)
Corporate
Segment Reporting Information [Line Items]
Revenue	148	151
Income (loss) from operations	$ (3,252)	$ (2,961)