10. Commitments and Contingencies (Details) - Product Warranties - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Movement in Standard Product Warranty Accrual [Roll Forward]
Product warranty liability, beginning of period	$ 220,692	$ 224,274
Accruals for new warranties issued	5,116	3,632
Settlements	(3,078)	(2,609)
Changes in estimate of product warranty liability	(5,489)	503
Product warranty liability, end of period	217,241	225,800
Current portion of warranty liability	31,013	32,655
Noncurrent portion of warranty liability	$ 186,228	$ 193,145
Percentage Point Change in Estimated Rate of Return of Module Warranty	1.00%
Estimated Change in Module Warranty from Sensitivity Analysis	$ 77,100
Percentage Point Change in Estimated Rate of Return of Balance of Systems Warranty	1.00%
Minimum [Member]
Movement in Standard Product Warranty Accrual [Roll Forward]
Estimated Rate of Return for Module Warranty	1.00%
Maximum [Member]
Movement in Standard Product Warranty Accrual [Roll Forward]
Estimated Rate of Return for Module Warranty	3.00%