Note 7 - Income Taxes - Deferred Tax Assets and Liabilities (Details) - USD ($)	Dec. 31, 2022	Dec. 31, 2021
Deferred tax assets:
Allowance for doubtful accounts	$ 16,000	$ 24,000
Accrued expenses	691,000	687,000
Share-based compensation	1,072,000	740,000
Accrued bonuses	96,000	267,000
Employer payroll tax deferral	0	200,000
Uncertain tax positions	256,000	161,000
Deferred Tax Assets, Research and Expenditures	856,000	0
Other	78,000	66,000
Gross deferred tax assets	3,065,000	2,145,000
Deferred tax assets	3,065,000	2,145,000
Deferred tax liabilities:
Prepaid expenses	135,000	89,000
Deferred contract costs	601,000	945,000
Property and equipment	1,066,000	1,579,000
Intangible assets	6,523,000	6,338,000
Repatriation withholding	0	182,000
Deferred tax liabilities	8,325,000	9,133,000
Net deferred tax liabilities	$ (5,260,000)	$ (6,988,000)