Note 2 - Significant Accounting Policies - Property and Equipment, Schedule of Depreciation Annual Rates and Estimated Useful Lives of Assets (Details)	12 Months Ended
Dec. 31, 2016
Computer Equipment [Member]
Computer equipment	33.00%
Office Furniture and Equipment [Member] \| Minimum [Member]
Computer equipment	7.00%
Office Furniture and Equipment [Member] \| Maximum [Member]
Computer equipment	15.00%
Leasehold Improvements [Member]
Leasehold improvements	Over the shorter of the lease term or estimated useful life

Describes the periods of time over which an entity anticipates to receive utility from its property, plant and equipment (that is, the periods of time over which an entity allocates the initial cost of its property, plant and equipment).

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=68058157&loc=d3e18780-107790

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 35
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=68071081&loc=d3e1205-110223

Name:	us-gaap_PropertyPlantAndEquipmentEstimatedUsefulLives
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration