Note 8 - Business Combination (Details) - Acquisition Purchase Price Allocation (USD $) In Thousands, unless otherwise specified			1 Months Ended
	Jun. 30, 2014	Dec. 31, 2013	May 22, 2013 Hego [Member]	Apr. 30, 2014 Zxy Sport Tracking AS [Member]
Note 8 - Business Combination (Details) - Acquisition Purchase Price Allocation [Line Items]
Net fair value of assets acquired			$ 107	$ 628
Intangible assets	10,905	8,968	9,930	2,600
Goodwill	21,973	18,948	16,321	3,025
Purchase price allocation before deferred tax liability			26,358	6,253
Deferred tax liability			(1,766)	(702)
Purchase price allocation after deferred tax liability			$ 24,592	$ 5,551