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Segment and Related Information - Reconciliation of Segment Assets (Details) - USD ($) $ in Thousands | Jun. 30, 2018 | Dec. 31, 2017
--- | --- | ---
Identifiable assets by geographic area [Abstract] |  |
Identifiable assets | $ 127,215 | $ 114,624
Goodwill by business segment [Abstract] |  |
Goodwill | 11,051 | 11,051
Restaurant/Retail |  |
Goodwill by business segment [Abstract] |  |
Goodwill | 10,300 | 10,300
Government |  |
Goodwill by business segment [Abstract] |  |
Goodwill | 800 | 800
Operating segments | Restaurant/Retail |  |
Identifiable assets by geographic area [Abstract] |  |
Identifiable assets | 82,813 | 74,257
Goodwill by business segment [Abstract] |  |
Goodwill | 10,315 | 10,315
Operating segments | Government |  |
Identifiable assets by geographic area [Abstract] |  |
Identifiable assets | 11,067 | 8,714
Goodwill by business segment [Abstract] |  |
Goodwill | 736 | 736
Reportable geographical components | United States |  |
Identifiable assets by geographic area [Abstract] |  |
Identifiable assets | 113,612 | 99,284
Reportable geographical components | Other Countries |  |
Identifiable assets by geographic area [Abstract] |  |
Identifiable assets | 13,603 | 15,340
Other |  |
Identifiable assets by geographic area [Abstract] |  |
Identifiable assets | $ 33,335 | $ 31,653

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- Definition Sum of the carrying amounts as of the balance sheet date of all assets that are recognized, excluding assets of discontinued operations. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. + References No definition available. + Details
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- Definition Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=77989000&loc=SL49117168-202975 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=99380562&loc=d3e13770-109266 + Details
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