Income Taxes - Schedule of Deferred Tax Assets and Liabilities (Detail) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014	Jun. 30, 2014
Deferred tax assets:
Accruals and reserves	$ 156,225	$ 29,142
Net operating losses	23,869	86,322
Accelerated gain on assets	26,005	25,710
Investment in certain financing funds	485,159	288,556
Tax rebate revenue	43,037	41,710
Stock-based compensation	47,605	21,769
Other deferred tax assets	9,887	5,507
Tax credits	7,946	10,849
Gross deferred tax assets	799,733	509,565
Valuation allowance	(369,157)	(111,222)
Net deferred tax assets	430,576	398,343
Deferred tax liabilities:
Depreciation and amortization	(279,492)	(239,170)	$ (1,600)
Investment in certain financing funds		(86,518)
Initial direct costs related to customer solar energy system lease acquisition costs and Other deferred tax liabilities	(152,457)	(72,700)
Gross deferred tax liabilities	(431,949)	(398,388)
Net deferred taxes	$ (1,373)	$ (45)