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Goodwill and Intangible Assets (Details 1) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Gross carrying amounts:    
Balance $ 9,523 $ 10,045
Foreign currency translation 178 (20)
Balance 9,701 10,025
Accumulated amortization:    
Balance 3,248 2,439
Amortization expense 242 249
Foreign currency translation 60 (21)
Balance 3,550 2,667
Developed Technology Rights [Member]    
Gross carrying amounts:    
Balance 2,999 3,204
Foreign currency translation 61 (33)
Balance 3,060 3,171
Accumulated amortization:    
Balance 1,137 902
Amortization expense 77 80
Foreign currency translation 24 (15)
Balance 1,238 967
Customer Relationships [Member]    
Gross carrying amounts:    
Balance 2,081 2,264
Foreign currency translation 47 (53)
Balance 2,128 2,211
Accumulated amortization:    
Balance 766 645
Amortization expense 45 47
Foreign currency translation 16 (17)
Balance 827 675
Trademarks and trade names [Member]    
Gross carrying amounts:    
Balance 855 884
Foreign currency translation 10 0
Balance 865 884
Accumulated amortization:    
Balance 440 330
Amortization expense 30 31
Foreign currency translation 4 (2)
Balance 474 359
Patents [Member]    
Gross carrying amounts:    
Balance 42 46
Foreign currency translation 1 (1)
Balance 43 45
Accumulated amortization:    
Balance 19 15
Amortization expense 1 1
Foreign currency translation 0 1
Balance 20 17
Media Contact Database [Member]    
Gross carrying amounts:    
Balance 3,546 3,647
Foreign currency translation 59 67
Balance 3,605 3,714
Accumulated amortization:    
Balance 886 547
Amortization expense 89 90
Foreign currency translation 16 12
Balance $ 991 $ 649