Divestiture of Automatic License Plate Recognition Business (Details 1) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Non-current assets from discontinued operations	$ 420	$ 7,002
Non-current liabilities from discontinued operations		1,812
License Plate Recognition (TagMaster AB) [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Accounts receivable, net		1,685
Inventories		1,409
Other current assets	420	209
Current assets from discontinued operations	$ 420	3,303
Property and equipment, net:		167
Intangible assets, net		3,532
Non-current assets from discontinued operations		3,699
Trade accounts payable		864
Other current liabilities		857
Current liabilities from discontinued operations		1,721
Non-current liabilities from discontinued operations		$ 91