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FAIR VALUE (CONTINGENT CONSIDERATION TABLE) (DETAILS) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2015 | Dec. 31, 2014
Business acquisitions, Contingent Consideration [Line Items] |  |
Beginning balance, contingent consideration payable | $ 24,744 | $ 21,748
Acquisitions |  | 18,373
Payments | (12,010) | (9,144)
Imputed Interest/ Adjustment | 716 | (6,233)
Ending balance, contingent consideration payable | 13,450 | 24,744
Iknowtion [Member] |  |
Business acquisitions, Contingent Consideration [Line Items] |  |
Beginning balance, contingent consideration payable | 2,265 | 3,470
Payments | (1,800) | (1,400)
Imputed Interest/ Adjustment | 35 | 195
Ending balance, contingent consideration payable | 500 | 2,265
Guidon [Member] |  |
Business acquisitions, Contingent Consideration [Line Items] |  |
Beginning balance, contingent consideration payable | 1,000 | 2,637
Payments | (1,000) | (1,426)
Imputed Interest/ Adjustment |  | (211)
Ending balance, contingent consideration payable | 0 | 1,000
Technology Solutions Group [Member] |  |
Business acquisitions, Contingent Consideration [Line Items] |  |
Beginning balance, contingent consideration payable | 0 | 12,933
Payments |  | (5,292)
Imputed Interest/ Adjustment |  | (7,641)
Ending balance, contingent consideration payable | 0 | 0
WebMetro [Member] |  |
Business acquisitions, Contingent Consideration [Line Items] |  |
Beginning balance, contingent consideration payable | 0 | 2,708
Payments |  | (1,026)
Imputed Interest/ Adjustment |  | (1,682)
Ending balance, contingent consideration payable | 0 | 0
Sofica [Member] |  |
Business acquisitions, Contingent Consideration [Line Items] |  |
Beginning balance, contingent consideration payable | 6,317 | 0
Acquisitions |  | 3,830
Payments | (2,838) |
Imputed Interest/ Adjustment | (326) | 2,487
Ending balance, contingent consideration payable | 3,153 | 6,317
rogenSi [Member] |  |
Business acquisitions, Contingent Consideration [Line Items] |  |
Beginning balance, contingent consideration payable | 15,162 | 0
Acquisitions |  | 14,543
Payments | (6,372) |
Imputed Interest/ Adjustment | 1,007 | 619
Ending balance, contingent consideration payable | $ 9,797 | $ 15,162

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