Annual report pursuant to Section 13 and 15(d)

Financial Instruments Financial Instruments (Details 3)

v3.6.0.2
Financial Instruments Financial Instruments (Details 3) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Oct. 31, 2014
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Business Combination, Contingent Consideration, Liability     $ 1,700  
Net Gain (Loss) Attributable To Contingent Consideration $ 220 $ 130    
Physpeed [Member] | Earn-out Consideration [Member]        
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Business Combination, Contingent Consideration, Liability       $ 300
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Contingent Consideration [Member]        
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Available-for-sale Securities, Debt Securities, Current   395    
Estimate of Fair Value Measurement [Member] | Fair Value, Measurements, Recurring [Member] | Contingent Consideration [Member]        
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Payment of Contingent Consideration (240)      
Fair Value, Measurement with Unobservable Inputs Reconciliations, Recurring Basis, Liability Value 395 265    
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Gain (Loss) Included in Earnings 220 130    
Fair Value, Measurement with Unobservable Inputs Reconciliations, Recurring Basis, Liability Value   395    
Estimate of Fair Value Measurement [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Contingent Consideration [Member]        
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Business Combination, Contingent Consideration, Liability $ 375 $ 395