Condensed Consolidated Statements of Cash Flows (Unaudited) Statements of Cash Flows Parenthetical - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Weizmann [Member]
Cash Acquired from Acquisition	$ 11,300
Zillious [Member]
Cash Acquired from Acquisition	$ 279
CDL (Centrum) [Member]
Cash Acquired from Acquisition		$ 13,400
Smartclass [Member]
Cash Acquired from Acquisition		982
AHA Taxis [Member]
Cash Acquired from Acquisition		$ 25