Current report of foreign issuer pursuant to Rules 13a-16 and 15d-16 Amendments

Fair Value Measurements (Narrative) (Details)

v3.7.0.1
Fair Value Measurements (Narrative) (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2017
Dec. 31, 2016
Mar. 31, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Change in fair value of obligations in connection with acquisitions $ 696   $ 727
Solid Concepts Inc [Member]      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Remaining obligations in connection with acquisitions 3,300    
Increase to fair value of deferred payments if Company's share price increased by 10% 3,500    
Increase to fair value of deferred payments if there was a 10% change in share price volatility used in calculation of discount 300    
Increased fair value of deferred payments liability $ 100    
Solid Concepts Inc [Member] | Ordinary Shares [Member]      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Ordinary shares issued as consideration for business acquisition   152,633  
Value of ordinary shares issued as consideration for business acquisition   $ 3,100  
Cash given as consideration for business acquisition   $ 400