ACQUISITION - Summary of Consideration Transfered for Business Acquisition (Details) - SunPower’s - USD ($) $ in Thousands		12 Months Ended
Aug. 09, 2018	Dec. 31, 2018
Business Acquisition [Line Items]
Cash consideration	$ 25,000	$ 25,000
Common stock issued	32,319
Total	$ 57,319
Concentration Risk, Percentage	100.00%
Developed technology and goodwill
Business Acquisition [Line Items]
Cash consideration	$ 15,000	$ 15,000
Common stock issued	19,219
Total	$ 34,219
Concentration Risk, Percentage	60.00%
Customer relationship
Business Acquisition [Line Items]
Cash consideration	$ 10,000
Common stock issued	13,100
Total	$ 23,100
Concentration Risk, Percentage	40.00%

Payments To Acquire Business, Total Gross Amount

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Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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Amount of equity interests of the acquirer, including instruments or interests issued or issuable in consideration for the business combination.

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