Acquisitions (Details 2) $ in Thousands	12 Months Ended
	Dec. 31, 2018 USD ($)
Change in Contingent Consideration [Roll Forward]
Beginning balance of liability	$ 4,225
Contingent Consideration Liability, Additions	905
2016 Payments	0
Change in Fair Value of Contingent Consideration	(4,438)
Foreign Currency Translation	(15)
Ending balance of liability	677
IC Axon [Member]
Change in Contingent Consideration [Roll Forward]
Beginning balance of liability	0
Contingent Consideration Liability, Additions	905
2016 Payments
Change in Fair Value of Contingent Consideration	(311)
Foreign Currency Translation	0
Ending balance of liability	594
Maverick Solutions [Member]
Change in Contingent Consideration [Roll Forward]
Beginning balance of liability	1,979
Contingent Consideration Liability, Additions	0
2016 Payments	0
Change in Fair Value of Contingent Consideration	(1,979)
Foreign Currency Translation	0
Ending balance of liability	0
McKinney Rogers [Member]
Change in Contingent Consideration [Roll Forward]
Beginning balance of liability	1,501
Contingent Consideration Liability, Additions	0
2016 Payments	0
Change in Fair Value of Contingent Consideration	(1,418)
Foreign Currency Translation	0
Ending balance of liability	83
Emantras [Member]
Change in Contingent Consideration [Roll Forward]
Beginning balance of liability	76
Contingent Consideration Liability, Additions	0
2016 Payments	0
Change in Fair Value of Contingent Consideration	(76)
Foreign Currency Translation	0
Ending balance of liability	0
CLS [Member] [Member]
Change in Contingent Consideration [Roll Forward]
Beginning balance of liability	669
Contingent Consideration Liability, Additions	0
2016 Payments	0
Change in Fair Value of Contingent Consideration	(654)
Foreign Currency Translation	(15)
Ending balance of liability	$ 0