Note 7 - Income Taxes - Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Deferred tax assets:
Allowance for doubtful accounts	$ 24	$ 29
Accrued expenses	687	696
Share-based compensation	740	735
Accrued bonuses	267	145
Employer payroll tax deferral	200	323
Uncertain tax positions	161	104
Other	66	11
Gross deferred tax assets	2,145	2,043
Deferred tax assets	2,145	2,043
Deferred tax liabilities:
Prepaid expenses	89	93
Deferred contract costs	945	1,111
Property and equipment	1,579	1,725
Intangible assets	6,338	6,109
Repatriation withholding	182	174
Other		96
Deferred tax liabilities	9,133	9,308
Net deferred tax liabilities	$ (6,988)	$ (7,265)