Business Description and Summary of Significant Accounting Policies - Additional Information (Details)	12 Months Ended
	Dec. 31, 2023 USD ($) segment Y	Dec. 31, 2022 USD ($)
Business Description and Summary of Significant Accounting Policies
Number of operating segments | segment	1
Allowance for credit losses	$ 121,000	$ 116,000
Warranty period	27 months
Warranty reserve	$ 542,000	581,000
Inventory reserve	587,000	602,000
Income taxes refunds received	146,000	811,000
Income taxes paid	2,000	175,000
Interest paid	366,000	240,000
Impairment of long-lived assets	0
ATG Research and development expenditures
Business Description and Summary of Significant Accounting Policies
Research and Development Costs	$ 1,892,000	$ 1,475,000
Minimum
Business Description and Summary of Significant Accounting Policies
Number of years of customer requirements | Y	2
Number of year's supply | Y	1