Balance Sheet Components (Tables)

9 Months Ended

Sep. 30, 2016

Balance Sheet Components [Abstract]

Schedule of Gains and Losses on Available for Sale Securities

The following table summarizes the unrealized gains and losses and fair value of our short term available-for-sale securities (in thousands):

	September 30, 2016
	Amortized Cost		Unrealized Gains		Unrealized Losses			Fair Value
Commercial paper	$	11,941	$	56	$	—		$	11,997
U.S. government notes	139,509		22		(32		)	139,499
Corporate bonds	148,123		153		(105		)	148,171
Total marketable securities	$	299,573	$	231	$	(137	)	$	299,667

Schedule of Available-For-Sale Securities by Remaining Contractual Maturity

As of September 30, 2016, the contractual maturities of our investments did not exceed 24 months. The fair values of available-for-sale investments, by remaining contractual maturity, are as follows (in thousands):

	September 30, 2016
Due in 1 year or less	$	171,170
Due in 1 year through 2 years	128,497
Total marketable securities	$	299,667

Schedule of Accounts Receivable

Accounts receivable, net consists of the following (in thousands):

	September 30, 2016			December 31, 2015
Accounts receivable	$	211,783		$	145,792
Allowance for doubtful accounts	(291		)	(963		)
Sales return reserve	(1,249		)	(566		)
Accounts receivable, net	$	210,243		$	144,263

Schedule of Inventories

Inventories consist of the following (in thousands):

	September 30, 2016		December 31, 2015
Raw materials	$	64,610	$	29,831
Finished goods	97,518		62,298
Total inventories	$	162,128	$	92,129

Schedule of Prepaid Expenses and Other Current Assets

Prepaid expenses and other current assets consist of the following (in thousands):

	September 30, 2016		December 31, 2015
Inventory deposit	$	62,576	$	—
Prepaid income taxes	22,817		14,150
Other current assets	55,363		29,270
Other prepaid expenses and deposits	10,903		7,190
Total prepaid expenses and other current assets	$	151,659	$	50,610

Schedule of Property and Equipment, net

Property and equipment, net consists of the following (in thousands):

	September 30, 2016			December 31, 2015
Equipment and machinery	$	38,269		$	29,101
Computer hardware and software	16,840			12,630
Furniture and fixtures	2,865			2,380
Leasehold improvements	29,504			24,372
Building	35,154			35,154
Construction-in-process	304			6,408
Property and equipment, gross	122,936			110,045
Less: accumulated depreciation	(44,789		)	(30,339		)
Property and equipment, net	$	78,147		$	79,706

Schedule of Accrued Liabilities

Accrued liabilities consist of the following (in thousands):

	September 30, 2016		December 31, 2015
Accrued compensation costs	$	41,695	$	39,479
Accrued warranty costs	5,597		4,718
Accrued manufacturing costs	14,558		6,397
Accrued professional fees	6,827		4,875
Accrued taxes	1,320		1,347
Other	7,166		4,155
Total accrued liabilities	$	77,163	$	60,971

Schedule of Warranty Accrual

The following table summarizes the activity related to our accrued liability for estimated future warranty costs (in thousands):

	Nine Months Ended September 30,
	2016			2015
Warranty accrual, beginning of period	$	4,718		$	3,204
Liabilities accrued for warranties issued during the period	3,717			3,352
Warranty costs incurred during the period	(2,541		)	(1,765		)
Adjustments related to change in estimate	(297		)	—
Warranty accrual, end of period	$	5,597		$	4,791