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Note 2 - Significant Accounting Policies (Details Textual) $ in Thousands		12 Months Ended
		Dec. 31, 2019 USD ($)	Jan. 01, 2019 USD ($)	Dec. 31, 2018 USD ($)		Jan. 01, 2018 USD ($)
Number of Operating Segments		2
Operating Lease, Right-of-Use Asset		$ 11,335			[1]
Operating Lease, Liability, Total		10,837
Capitalized Contract Cost, Net, Total						$ 1,400
Retained Earnings (Accumulated Deficit), Ending Balance		76,208		60,810	[1]
Deferred Income Tax Liabilities, Net, Total	[1]	$ 25,471		$ 20,925
Accounting Standards Update 2016-02 [Member]
Operating Lease, Right-of-Use Asset			$ 8,800
Operating Lease, Liability, Total			8,300
Operating Lease, Right-of-Use Asset, Net			500
Deferred Rent Credit			(100)
Prepaid Expense			$ (600)
Accounting Standards Update 2014-09 [Member] | Difference between Revenue Guidance in Effect before and after Topic 606 [Member]
Retained Earnings (Accumulated Deficit), Ending Balance						1,100
Deferred Income Tax Liabilities, Net, Total						$ 300
Minimum [Member]
Finite-Lived Intangible Asset, Useful Life		2 years
Maximum [Member]
Finite-Lived Intangible Asset, Useful Life		15 years
Capitalized Internal Use Software [Member] | Minimum [Member]
Finite-Lived Intangible Asset, Useful Life		3 years
Capitalized Internal Use Software [Member] | Maximum [Member]
Finite-Lived Intangible Asset, Useful Life		7 years
[1] The Company has initially applied ASC 2016-02 (Topic 842) on January 1, 2019 using the modified retrospective method (note 2(v)). Under this method, the comparative information is not restated.

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