Stock-Based Compensation (Tables)

3 Months Ended

Mar. 31, 2017

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Summary of Stock Option Activity

The following table summarizes the activity for all stock options under all of the Company’s equity incentive plans for the three months ended March 31, 2017 (shares in thousands):

						Weighted
				Weighted		Average		Aggregate
	Number			Average		Remaining		Intrinsic
	of Options			Exercise Price		Contractual Life		Value
Outstanding at January 1, 2017		12,897		$	5.94		7.49
Granted		4,269			5.00
Exercised		(41	)		1.96
Cancelled / forfeited		(118	)		8.87
Outstanding at March 31, 2017		17,007		$	5.70		7.94	$	11,677
Options vested and exercisable at    March 31, 2017		7,581		$	5.24		6.42	$	9,392

Summary of Activity for All Restricted Stock Unites ("RSUs")

The following table summarizes the activity for all restricted stock units (“RSUs”) under all of the Company’s equity incentive plans for the three months ended March 31, 2017 (shares in thousands):

				Weighted
				Average
	Number			Grant Date
	of Awards			Fair Value
Unvested balance at January 1, 2017		4,106		$	6.87
Granted		2,534			5.00
Issued		(281	)		5.63
Cancelled / forfeited		(275	)		5.58
Unvested balance at March 31, 2017		6,084		$	6.20

Summary of Stock-Based Compensation Expense

The Company recognized stock-based compensation expense, including ESPP expenses, in the consolidated statements of operations as follows (in thousands):

	Three Months Ended March 31,
	2017		2016
Cost of operating leases and incentives	$	751	$	207
Cost of solar energy systems and product sales		114		81
Sales and marketing		1,917		1,618
Research and development		149		97
General and administration		2,943		1,806
Total	$	5,874	$	3,809