Revenue Recognition (Tables)

3 Months Ended

Dec. 31, 2021

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
	December 31, 2021		December 31, 2020
Oil and Gas Markets
Traditional exploration product revenue	$	580	$	997
Wireless exploration product revenue		3,758		10,029
Reservoir product revenue		427		29
Total revenue		4,765		11,055
Adjacent Markets
Industrial product revenue		5,014		4,407
Imaging product revenue		3,116		2,463
Total revenue		8,130		6,870
Emerging Markets
Revenue		137		8,797
Total	$	13,032	$	26,722

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
	December 31, 2021		December 31, 2020
Asia	$	4,678	$	11,373
Canada		398		407
Europe		1,311		1,175
United States		6,019		13,364
Other		626		403
Total	$	13,032	$	26,722