INTANGIBLE ASSETS AND GOODWILL (Schedule of Goodwill Activity) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Acquired Finite-Lived Intangible Assets [Line Items]
Goodwill at January 1, 2019	$ 34,874
Business combinations	97,498	34,445
Other changes related to measurement period and disposals	3,067
Foreign currency translation	(2,364)	429
Goodwill at December 31, 2019	129,654	34,874
Solar [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Goodwill at January 1, 2019	31,205
Business combinations		30,789
Other changes related to measurement period and disposals	1,299
Foreign currency translation	(1,239)	416
Goodwill at December 31, 2019	31,265	31,205
All other [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Goodwill at January 1, 2019	3,669
Business combinations	97,498	3,656
Other changes related to measurement period and disposals	(1,653)
Foreign currency translation	(1,125)	13
Goodwill at December 31, 2019	$ 98,389	$ 3,669