Goodwill and Intangible Assets (Narrative) (Details) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended		6 Months Ended
	Jan. 31, 2018	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Goodwill and Intangible Assets Disclosure [Abstract]
Amortization		$ 700	$ 1,400	$ 1,422	$ 2,860
BotCentral
Business Acquisition [Line Items]
Equity consideration in acquisition	$ 1,000
Acquisition costs	200
Total consideration transferred	$ 1,200