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Business Combination, Significant Transaction and Sale of Business (Tables) | 12 Months Ended
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Dec. 31, 2017
Business Acquisition [Line Items] |
Summary of estimated fair values of the assets acquired and liabilities |
|  |  | December 31, |
|  |  | 2016 |  |  | 2017 (*) |
| Net assets, excluding cash acquired |  | $ | 2,174 |  |  | $ | (1,822 | )
| Non-controlling interest |  |  | (1,209 | ) |  |  | - |
| Intangible assets |  |  | 2,370 |  |  |  | 1,149 |
| Deferred tax liability |  |  | (493 | ) |  |  | - |
| Goodwill |  |  | 6,042 |  |  |  | 1,723 |
| Total assets acquired net of acquired cash |  | $ | 8,884 |  |  | $ | 1,050 |
| (*) | The estimated fair values of the tangible and intangible assets referring to acquisition which were made in 2017 are provisional and are based on information that was available as of the acquisition date to estimate the fair value of these amounts. The Company’s management believes the information provides a reasonable basis for estimating the fair values of these amounts, but is waiting for additional information necessary to finalize those fair values. Therefore, provisional measurements of fair value reflected are subject to change. The Company expects to finalize the tangible and intangible assets valuation and complete the acquisition accounting as soon as practicable but no later than the measurement period.
Comblack IT Ltd. [Member] |
Business Acquisition [Line Items] |
Summary of estimated fair values of the assets acquired and liabilities |
| Net assets, excluding cash acquired |  | $ | (405 | )
| Non-controlling interest |  |  | (989 | )
| Intangible assets |  |  | 1,249 |
| Goodwill |  |  | 1,966 |
| Total assets acquired net of acquired cash |  | $ | 1,821 |
Infinigy Solutions LLC [Member] |
Business Acquisition [Line Items] |
Summary of estimated fair values of the assets acquired and liabilities |
| Net assets, excluding cash acquired |  | $ | 1,182 |
| Non-controlling interest |  |  | (3,590 | )
| Intangible assets |  |  | 3,675 |
| Goodwill |  |  | 5,260 |
| Total assets acquired net of acquired cash |  | $ | 6,527 |
Roshtov Software Industries Ltd [Member] |
Business Acquisition [Line Items] |
Summary of estimated fair values of the assets acquired and liabilities |
| Net assets, excluding cash acquired |  | $ | 15 |
| Non-controlling interest |  |  | (14,012 | )
| Intangible assets |  |  | 22,439 |
| Deferred tax liability |  |  | (5,610 | )
| Goodwill |  |  | 17,718 |
| Total assets acquired net of acquired cash |  | $ | 20,550 |
Shavit Software (2009) Ltd. [Member] |
Business Acquisition [Line Items] |
Summary of estimated fair values of the assets acquired and liabilities |
| Net assets, excluding cash acquired |  | $ | 533 |
| Intangible assets |  |  | 3,489 |
| Deferred tax liability |  |  | (871 | )
| Goodwill |  |  | 3,685 |
| Total assets acquired net of acquired cash |  | $ | 6,836 |

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- Definition Tabular disclosure of a material business combination completed during the period, including background, timing, and recognized assets and liabilities. This table does not include leveraged buyouts. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=79982066&loc=d3e1486-128463 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463 + Details
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