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Business Combination, Significant Transaction and Sale of Business (Details Textual) - USD ($) $ in Thousands			1 Months Ended
	Jul. 11, 2016	Apr. 14, 2015	Oct. 31, 2016	Jul. 31, 2016	Jun. 30, 2015	Dec. 31, 2017	Dec. 31, 2016
Business Combination Significant Transaction and Sale of Business (Textual)
Business combination consideration paid transferred						$ 1,050	$ 8,884
Contingent payment upon operational targets						2,405
Comblack IT Ltd. [Member]
Business Combination Significant Transaction and Sale of Business (Textual)
Business combination consideration paid transferred		$ 1,821
Payments upon closing of the business acquisition		1,523
Contingent payment upon operational targets		$ 298
Business acquisition, remaining ownership percentage		30.00%
Ownership interest acquired		70.00%
Redeemable non-controlling interest		$ 989
Infinigy Solutions LLC [Member]
Business Combination Significant Transaction and Sale of Business (Textual)
Business combination consideration paid transferred					$ 6,527
Payments upon closing of the business acquisition					5,600
Contingent payment upon operational targets					$ 927
Business acquisition, remaining ownership percentage					30.00%
Ownership interest acquired					70.00%
Redeemable non-controlling interest					$ 3,590	3,366
Roshtov Software Industries Ltd [Member]
Business Combination Significant Transaction and Sale of Business (Textual)
Business acquired consideration	$ 20,550
Business acquisition, remaining ownership percentage	40.00%
Ownership interest acquired	60.00%
Redeemable non-controlling interest	$ 14,012					15,565
Shavit Software (2009) Ltd. [Member]
Business Combination Significant Transaction and Sale of Business (Textual)
Business combination consideration paid transferred			$ 6,836
Payments upon closing of the business acquisition			$ 4,699
Ownership interest acquired			100.00%
Business acquisition, deferred payment			$ 2,137
Seller [Member] | Comblack IT Ltd. [Member]
Business Combination Significant Transaction and Sale of Business (Textual)
Redeemable non-controlling interest						5,034
Seller [Member] | Infinigy Solutions LLC [Member]
Business Combination Significant Transaction and Sale of Business (Textual)
Business acquired consideration				$ 534
Seller [Member] | Shavit Software (2009) Ltd. [Member]
Business Combination Significant Transaction and Sale of Business (Textual)
Business acquisition, deferred payment						$ 924

X

- Definition

It represents the value of business acquisition contingent consideration deferred payment.

+ References

No definition available.

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The remaining ownership percentage subsequently acquired by the company.

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The amount of contingent payment upon meeting the certain operational targets.

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- Definition

Percentage of voting equity interests acquired at the acquisition date in the business combination.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463

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- Definition

Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 30
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6578-128477

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-URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479

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- Definition

Amount of liability recognized arising from contingent consideration in a business combination, expected to be settled beyond one year or the normal operating cycle, if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 25
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=6911189&loc=d3e6408-128476

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- Definition

The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3213-108585

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The aggregate fair value as of the reporting date of all noncontrolling interests which are redeemable by the (parent) entity (1) at a fixed or determinable price on a fixed or determinable date, (2) at the option of the holder of the noncontrolling interest, or (3) upon occurrence of an event that is not solely within the control of the (parent) entity. This item includes noncontrolling interest holder's ownership (or holders' ownership) regardless of the type of equity interest (common, preferred, other) including all potential organizational (legal) forms of the investee entity.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 480
-SubTopic 10
-Section S99
-Paragraph 3A
-Subparagraph 14
-URI http://asc.fasb.org/extlink&oid=65877616&loc=SL6540498-122764

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