EARNINGS PER SHARE (Schedule of Computation of Basic and Diluted Net Earnings (Loss) Per Share) (Details) - USD ($) $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2019	Mar. 31, 2019	Jun. 30, 2020	Jun. 30, 2019
Numerator:
Net income	$ 36,668		$ 32,913		$ 78,916	$ 50,888
Net loss attributable to Non-controlling interests			215			1,256
Net income attributable to SolarEdge Technologies, Inc.	$ 36,668	$ 42,248	$ 33,128	$ 19,016	$ 78,916	$ 52,144
Denominator:
Shares used in computing net earnings per share of common stock, basic	49,786,586		47,683,799		49,493,173	47,353,401
Numerator:
Net income	$ 36,668		$ 32,913		$ 78,916	$ 50,888
Net loss attributable to Non-controlling interests			215			1,256
Undistributed earnings reallocated to non-vested stockholders			(220)			(304)
Net income attributable to SolarEdge Technologies, Inc.	$ 36,668		$ 32,908		$ 78,916	$ 51,840
Denominator:
Shares used in computing net earnings per share of common stock, basic	49,786,586		47,683,799		49,493,173	47,353,401
Weighted average effect of dilutive securities:
Non-vested PSUs			(334,096)			(289,796)
Effect of stock-based awards	2,749,851		2,590,331		2,864,665	2,294,675
Shares used in computing net earnings per share of common stock, diluted	52,536,437		49,940,034		52,357,838	49,358,280