Revenue Recognition (Tables)

3 Months Ended

Dec. 31, 2019

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, 2019		December 31, 2018
Oil and Gas Markets
Traditional exploration product revenue	$	2,330	$	2,726
Wireless exploration product revenue		404		144
Reservoir product revenue		180		888
Total revenue		2,914		3,758
Adjacent Markets
Industrial product revenue		3,596		3,562
Imaging product revenue		2,476		3,051
Total revenue		6,072		6,613
Emerging Markets
Revenue		97		88
Total	$	9,083	$	10,459

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, 2019		December 31, 2018
Asia	$	445	$	1,558
Canada		473		288
Europe		1,413		915
United States		6,597		6,610
Other		155		1,088
Total	$	9,083	$	10,459