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Goodwill and Intangible Assets (Details 1) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2018
Mar. 31, 2017
Gross carrying amounts:    
Balance $ 10,045 $ 9,549
Foreign currency translation (20) 48
Balance 10,025 9,597
Accumulated amortization:    
Balance 2,439 1,358
Amortization expense 249 243
Foreign currency translation (21) 6
Balance 2,667 1,607
Developed Technology Rights [Member]    
Gross carrying amounts:    
Balance 3,204 3,019
Foreign currency translation (33) 20
Balance 3,171 3,039
Accumulated amortization:    
Balance 902 545
Amortization expense 80 77
Foreign currency translation (15) 2
Balance 967 624
Customer Relationships [Member]    
Gross carrying amounts:    
Balance 2,264 2,112
Foreign currency translation (53) 16
Balance 2,211 2,128
Accumulated amortization:    
Balance 645 425
Amortization expense 47 45
Foreign currency translation (17) 3
Balance 675 473
Trademarks and TradeNames [Member]    
Gross carrying amounts:    
Balance 884 865
Foreign currency translation 0 (6)
Balance 884 859
Accumulated amortization:    
Balance 330 203
Amortization expense 31 30
Foreign currency translation (2) 0
Balance 359 233
Patents [Member]    
Gross carrying amounts:    
Balance 46 43
Foreign currency translation (1) 0
Balance 45 43
Accumulated amortization:    
Balance 15 10
Amortization expense 1 1
Foreign currency translation 1 1
Balance 17 12
Media Contact Database [Member]    
Gross carrying amounts:    
Balance 3,647 3,510
Foreign currency translation 67 18
Balance 3,714 3,528
Accumulated amortization:    
Balance 547 175
Amortization expense 90 90
Foreign currency translation 12 0
Balance $ 649 $ 265