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Note 7 - Segment Reporting (Details Textual) $ in Thousands	3 Months Ended		9 Months Ended			12 Months Ended
	Sep. 30, 2022 USD ($)	Sep. 30, 2021	Sep. 30, 2022 USD ($)		Sep. 30, 2021	Dec. 31, 2021
Number of Reportable Segments			2
Accounts Receivable, Credit Loss Expense (Reversal)	$ 17,926		$ 18,012	[1]
Standard Product Warranty Accrual, Warranty Provision	$ 37,338
Geographic Concentration Risk [Member] | Revenue Benchmark [Member] | UNITED STATES
Concentration Risk, Percentage		82.00%	82.00%		82.00%
Geographic Concentration Risk [Member] | Net Assets, Geographic Area [Member] | UNITED STATES
Concentration Risk, Percentage			78.00%			75.00%
[1] Includes a specific credit loss provision of $17,926 recorded during the third quarter of 2022 for a clean energy product customer that filed for bankruptcy.

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The amount of warranty provision for standard product warranty accrual.

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For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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