Note 7 - Income Taxes - Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Deferred tax assets:
Allowance for doubtful accounts	$ 35	$ 41
Accrued expenses	537	424
Share based compensation	1,267	1,264
Accrued bonuses	120	198
Foreign tax credit from repatriation	535	535
Other		46
Gross deferred tax assets	2,494	2,508
Less valuation allowance	(535)	(535)
Deferred tax assets	1,959	1,973
Deferred tax liabilities:
Prepaid expenses	135	95
Deferred contract costs	990	786
Property and equipment	1,926	1,944
Intangible assets	5,553	4,919
Repatriation withholding	528	505
Unrealized translation gain on intercompany loan	214
Other	12
Deferred tax liabilities	9,358	8,249
Net deferred tax liabilities	$ (7,399)	$ (6,276)