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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Narrative (Details) - USD ($)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Fair Value, Option, Quantitative Disclosures [Line Items]
AMPTC, income tax payable benefit	$ 53,500,000
AMPTC, cost of revenues reduction	53,500,000
Accrued interest receivable	$ 7,600,000	$ 2,200,000	$ 2,100,000
Debt Securities, Available-for-Sale, Accrued Interest, after Allowance for Credit Loss, Statement of Financial Position [Extensible Enumeration]	Prepaid Expense and Other Assets, Current	Prepaid Expense and Other Assets, Current	Prepaid Expense and Other Assets, Current
Property and equipment impairment charge	$ 6,800,000	$ 1,200,000	$ 0
Goodwill, impairment loss	0	0	0
Impairment of intangible assets	3,807,000	0	0
Advertising costs	$ 3,800,000	$ 3,800,000	$ 16,200,000
Capitalized software costs
Fair Value, Option, Quantitative Disclosures [Line Items]
Property, plant and equipment, useful life	3 years
Monitoring Hardware And Service
Fair Value, Option, Quantitative Disclosures [Line Items]
Capitalized contract cost, amortization period	7 years
Communication Accessories
Fair Value, Option, Quantitative Disclosures [Line Items]
Service period	5 years
Microinverter, First and Second Generation
Fair Value, Option, Quantitative Disclosures [Line Items]
Product warranty, term	15 years
IQ Gateway And IQ Energy Router
Fair Value, Option, Quantitative Disclosures [Line Items]
Product warranty, term	5 years
Minimum
Fair Value, Option, Quantitative Disclosures [Line Items]
Property, plant and equipment, useful life	3 years
Intangible assets, estimated useful life	9 years
Period failure rate measurement lags product sale	3 months
Minimum | Capitalized software costs
Fair Value, Option, Quantitative Disclosures [Line Items]
Property, plant and equipment, useful life	3 years
Minimum | Subscription Contracts
Fair Value, Option, Quantitative Disclosures [Line Items]
Service period	3 months
Minimum | Battery Products
Fair Value, Option, Quantitative Disclosures [Line Items]
Product warranty, term	10 years
Minimum | EV Charger
Fair Value, Option, Quantitative Disclosures [Line Items]
Product warranty, term	1 year
Minimum | Third and Fourth Generation
Fair Value, Option, Quantitative Disclosures [Line Items]
Product warranty, term	5 years
Maximum
Fair Value, Option, Quantitative Disclosures [Line Items]
Property, plant and equipment, useful life	10 years
Intangible assets, estimated useful life	5 years
Period failure rate measurement lags product sale	9 months
Maximum | Capitalized software costs
Fair Value, Option, Quantitative Disclosures [Line Items]
Property, plant and equipment, useful life	5 years
Maximum | Subscription Contracts
Fair Value, Option, Quantitative Disclosures [Line Items]
Service period	12 months
Maximum | Microinverter, Subsequent Generations
Fair Value, Option, Quantitative Disclosures [Line Items]
Product warranty, term	25 years
Maximum | Battery Products
Fair Value, Option, Quantitative Disclosures [Line Items]
Product warranty, term	15 years
Maximum | EV Charger
Fair Value, Option, Quantitative Disclosures [Line Items]
Product warranty, term	5 years
Maximum | Third and Fourth Generation
Fair Value, Option, Quantitative Disclosures [Line Items]
Product warranty, term	25 years

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