Revenue Recognition (Tables)

9 Months Ended

Jun. 30, 2020

Revenue From Contract With Customer [Abstract]

Summary of Revenue from the Sale of Products and Performance of Services Under Contracts with Customers Excludes All Revenue Earned from Rental Contracts by Operating Segments

For each of the Company’s operating segments, the following table presents revenue only from the sale of products and the performance of services under contracts with customers (in thousands).  Therefore, the table excludes all revenue earned from rental contracts.

	Three Months Ended				Nine Months Ended
	June 30, 2020		June 30, 2019		June 30, 2020		June 30, 2019
Oil and Gas Markets
Traditional exploration product revenue	$	1,162	$	2,129	$	4,749	$	8,116
Wireless exploration product revenue		453		1,381		1,336		1,835
Reservoir product revenue		187		421		704		2,303
Total revenue		1,802		3,931		6,789		12,254
Adjacent Markets
Industrial product revenue		3,403		5,364		11,185		13,046
Imaging product revenue		1,682		2,847		7,044		9,012
Total revenue		5,085		8,211		18,229		22,058
Emerging Markets
Revenue		88		11		557		145
Total	$	6,975	$	12,153	$	25,575	$	34,457

Summary of Revenue from the Sale of Products and Services Under Contracts with Customers Excludes All Revenue Earned from Rental Contracts by Geographic Areas

For each of the geographic areas where the Company operates, the following table presents revenue (in thousands) from the sale of products and services under contracts with customers.  The table excludes all revenue earned from rental contracts:  

	Three Months Ended				Nine Months Ended
	June 30, 2020		June 30, 2019		June 30, 2020		June 30, 2019
Asia	$	925	$	1,094	$	2,200	$	4,162
Canada		509		1,202		1,776		1,832
Europe		1,193		1,023		3,865		3,108
United States		4,087		7,521		16,868		22,396
Other		261		1,313		866		2,959
Total	$	6,975	$	12,153	$	25,575	$	34,457