Note 16 - Segment Information - Summary of Long-lived Assets Within Geographic Areas Based on the Assets' Locations (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Long-lived assets	$ 3,184	$ 4,130
Europe [Member]
Long-lived assets	144	216
ISRAEL
Long-lived assets	2,017	2,652
Other Geographic Regions [Member]
Long-lived assets	$ 1,023	$ 1,262

Long-lived assets other than financial instruments, long-term customer relationships of a financial institution, mortgage and other servicing rights, deferred policy acquisition costs, and deferred tax assets.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 41
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e9038-108599

Name:	us-gaap_NoncurrentAssets
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant