Divestiture of Automatic License Plate Recognition Business (Details) - USD ($) $ in Thousands |
9 Months Ended | 12 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2015 |
Dec. 31, 2015 |
Dec. 31, 2014 |
Dec. 31, 2013 |
|
| Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] | ||||
| Loss on sale of discontinued operations | $ 1,081 | |||
| License Plate Recognition (TagMaster AB) [Member] | ||||
| Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] | ||||
| Net Revenue | 1,409 | $ 1,452 | $ 2,980 | |
| Operating income (loss) from continuing operations | (2,538) | (7,688) | (4,529) | |
| Loss on sale of discontinued operations | $ (1,100) | (1,081) | ||
| Income tax expense (benefit) | (134) | (20) | (58) | |
| Net loss on discontinued operations, net of tax | $ (3,485) | $ (7,668) | $ (4,471) | |