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Fair Value Measurement (Details 1) - Deferred Payments [Member]
$ in Thousands
6 Months Ended
Jun. 30, 2015
USD ($)
Schedule of changes in fair value of level 3 liability  
Balance at December 31, 2014 $ 2,398
Amounts earned (350)
Adjustments to fair value $ 767
Transfers in or out of Level 3  
Balance at June 30, 2015 $ 2,815