For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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Note 13 - Significant Risk Concentrations (Details Textual) - USD ($)	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Accounts Receivable, after Allowance for Credit Loss, Current, Total	$ 4,790,000		$ 4,914,000
Continental Resources [Member]
Accounts Receivable, after Allowance for Credit Loss, Current, Total	$ 757,000
Continental Resources [Member] \| Customer Concentration Risk [Member] \| Accounts Receivable [Member]
Concentration Risk, Percentage	16.00%
Honeywell International, Inc [Member]
Accounts Receivable, after Allowance for Credit Loss, Current, Total		$ 563,000
Honeywell International, Inc [Member] \| Customer Concentration Risk [Member] \| Accounts Receivable [Member]
Concentration Risk, Percentage		10.00%