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Goodwill and Intangible Assets (Details 2) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Gross carrying amounts:    
Balance $ 10,045 $ 9,549
Foreign currency translation (522) 496
Balance 9,523 10,045
Accumulated amortization:    
Balance 2,439 1,358
Amortization expense 996 980
Foreign currency translation (187) 101
Balance 3,248 2,439
Developed Technology Rights [Member]    
Gross carrying amounts:    
Balance 3,204 3,019
Foreign currency translation (205) 185
Balance 2,999 3,204
Accumulated amortization:    
Balance 902 545
Amortization expense 317 312
Foreign currency translation (82) 45
Balance 1,137 902
Customer Relationships [Member]    
Gross carrying amounts:    
Balance 2,264 2,112
Foreign currency translation (183) 152
Balance 2,081 2,264
Accumulated amortization:    
Balance 645 425
Amortization expense 185 182
Foreign currency translation (64) 38
Balance 766 645
Trademarks and trade names [Member]    
Gross carrying amounts:    
Balance 884 865
Foreign currency translation (29) 19
Balance 855 884
Accumulated amortization:    
Balance 330 203
Amortization expense 122 121
Foreign currency translation (12) 6
Balance 440 330
Patents [Member]    
Gross carrying amounts:    
Balance 46 43
Foreign currency translation (4) 3
Balance 42 46
Accumulated amortization:    
Balance 15 10
Amortization expense 5 4
Foreign currency translation (1) 1
Balance 19 15
Media Contact Database [Member]    
Gross carrying amounts:    
Balance 3,647 3,510
Foreign currency translation (101) 137
Balance 3,546 3,647
Accumulated amortization:    
Balance 547 175
Amortization expense 367 361
Foreign currency translation (28) 11
Balance $ 886 $ 547