Note 3 - Concentration of Credit Risk	3 Months Ended
Mar. 31, 2023
Notes to Financial Statements
Concentration Risk Disclosure [Text Block]	NOTE 3: CONCENTRATION OF CREDIT RISK Cash and cash equivalents The Company had cash and cash equivalents of $11.0 million and $14.4 million at March 31, 2023 and December 31, 2022, respectively. The Company invests excess cash in U.S. treasury bills, certificates of deposit or deposit accounts, all with maturities of less than three months. Cash equivalents were $9.2 million and $11.7 million at March 31, 2023 and December 31, 2022, respectively. The Company places most of its temporary cash investments with financial institutions, which from time to time may exceed the Federal Deposit Insurance Corporation limit. The amount at risk at March 31, 2023 and December 31, 2022 was $0.9 million and $1.5 million, respectively. The Company’s cash balance in our Denmark subsidiary exceeded the government guarantee limit by approximately $0.6 million and $0.5 million as March 31, 2023 and December 31, 2022, respectively. Accounts receivable The Company sells products and services to various companies across several industries in the ordinary course of business. The Company performs ongoing credit evaluations to assess the probability of accounts receivable collection based on a number of factors, including past transaction experience, evaluation of their credit history and review of the invoicing terms of the contract to determine the financial strength of its customers. Accounts receivable are presented net of an allowance for doubtful accounts of approximately $36,000 at both March 31, 2023 and December 31, 2022. The allowance is based on prior experience and management’s evaluation of the collectability of accounts receivable. Measurement of credit losses requires consideration of historical loss experience, including the need to adjust for changing business conditions, and judgments about the probable effects of relevant observable data, including present economic conditions such as delinquency rates and the financial health of specific customers. Future changes to the estimated allowance for doubtful accounts could be material to our results of operations and financial condition. At March 31, 2023, the accounts receivable balance included amounts from two customers that totaled 33.8% of total accounts receivable and at December 31, 2022, the accounts receivable balance included amounts from two customers that totaled 66% of total accounts receivable. Sales concentration Revenue from a single customer in any one period can exceed 10% of our total revenues. During the three months ended March 31, 2023, three customers exceeded 10% of revenues, representing 28.3%, 15.9% and 10.6% of revenues, and during the three months ended March 31, 2022, three customers exceeded 10%, representing 14.3%, 13.3% and 11.6% of revenues.

Note 3 - Concentration of Credit Risk

3 Months Ended

Mar. 31, 2023

Concentration Risk Disclosure [Text Block]

NOTE 3: CONCENTRATION OF CREDIT RISK

Cash and cash equivalents

The Company had cash and cash equivalents of $11.0 million and $14.4 million at March 31, 2023 and December 31, 2022, respectively. The Company invests excess cash in U.S. treasury bills, certificates of deposit or deposit accounts, all with maturities of less than three months. Cash equivalents were $9.2 million and $11.7 million at March 31, 2023 and December 31, 2022, respectively.

The Company places most of its temporary cash investments with financial institutions, which from time to time may exceed the Federal Deposit Insurance Corporation limit. The amount at risk at March 31, 2023 and December 31, 2022 was $0.9 million and $1.5 million, respectively. The Company’s cash balance in our Denmark subsidiary exceeded the government guarantee limit by approximately $0.6 million and $0.5 million as March 31, 2023 and December 31, 2022, respectively.

Accounts receivable

The Company sells products and services to various companies across several industries in the ordinary course of business. The Company performs ongoing credit evaluations to assess the probability of accounts receivable collection based on a number of factors, including past transaction experience, evaluation of their credit history and review of the invoicing terms of the contract to determine the financial strength of its customers.

Accounts receivable are presented net of an allowance for doubtful accounts of approximately $36,000 at both March 31, 2023 and December 31, 2022. The allowance is based on prior experience and management’s evaluation of the collectability of accounts receivable. Measurement of credit losses requires consideration of historical loss experience, including the need to adjust for changing business conditions, and judgments about the probable effects of relevant observable data, including present economic conditions such as delinquency rates and the financial health of specific customers. Future changes to the estimated allowance for doubtful accounts could be material to our results of operations and financial condition.

At March 31, 2023, the accounts receivable balance included amounts from two customers that totaled 33.8% of total accounts receivable and at December 31, 2022, the accounts receivable balance included amounts from two customers that totaled 66% of total accounts receivable.

Sales concentration

Revenue from a single customer in any one period can exceed 10% of our total revenues. During the three months ended March 31, 2023, three customers exceeded 10% of revenues, representing 28.3%, 15.9% and 10.6% of revenues, and during the three months ended March 31, 2022, three customers exceeded 10%, representing 14.3%, 13.3% and 11.6% of revenues.