Note 2 - Revenue (Tables)

6 Months Ended

Jun. 30, 2019

Notes Tables

Disaggregation of Revenue [Table Text Block]

	Three M onths E nded June 30 ,				Six Months Ended June 30,
(in thousands)	2019		2018		2019		2018
License	$	700	$	65	$	1,500	$	160
Professional services		4,663		2,763		8,627		4,871
Processing and maintenance		1,724		1,460		3,535		3,085
Third party		425		285		816		515
Total	$	7,512	$	4,573	$	14,478	$	8,631

	Three Months Ended June 30,				Six Months Ended June 30,
(in thousands)	2019		2018		2019		2018
European Union	$	1,234	$	710	$	2,451	$	1,545
United States		6,278		3,863		12,027		7,086
Total	$	7,512	$	4,573	$	14,478	$	8,631

Schedules of Concentration of Risk, by Risk Factor [Table Text Block]

	Three Months Ended June 3 0 ,						Six Months Ended June 30,
	2019			2018			2019			2018
Customer A		52.8	%		39.8	%		50.4	%		34.0	%
Customer B		15.9	%		15.2	%		16.5	%		17.6	%