Balance Sheet Components (Tables)

6 Months Ended

Jun. 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):

	June 30, 2016
	Amortized Cost		Unrealized Gains		Unrealized Losses			Fair Value
Commercial paper	$	17,924	$	51	$	—		$	17,975
U.S. government notes	125,398		37		(11		)	125,424
Corporate bonds	149,231		235		(105		)	149,361
Total marketable securities	$	292,553	$	323	$	(116	)	$	292,760

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

As of June 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):

	June 30, 2016
Due in 1 year or less	$	201,798
Due in 1 year through 2 years	90,962
Total marketable securities	$	292,760

Schedule of Accounts Receivable

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

	June 30, 2016			December 31, 2015
Accounts receivable	$	148,007		$	145,792
Allowance for doubtful accounts	(306		)	(963		)
Sales return reserve	(1,042		)	(566		)
Accounts receivable, net	$	146,659		$	144,263

Schedule of Inventories

Inventories consist of the following (in thousands):

	June 30, 2016		December 31, 2015
Raw materials	$	41,730	$	29,831
Finished goods	76,400		62,298
Total inventories	$	118,130	$	92,129

Schedule of Prepaid Expenses and Other Current Assets

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

	June 30, 2016		December 31, 2015
Prepaid income taxes	$	16,131	$	14,150
Other current assets	27,513		29,270
Other prepaid expenses and deposits	9,803		7,190
Total prepaid expenses and other current assets	$	53,447	$	50,610

Schedule of Property and Equipment, net

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

	June 30, 2016			December 31, 2015
Equipment and machinery	$	36,062		$	29,101
Computer hardware and software	15,600			12,630
Furniture and fixtures	2,853			2,380
Leasehold improvements	29,466			24,372
Building	35,154			35,154
Construction-in-process	343			6,408
Property and equipment, gross	119,478			110,045
Less: accumulated depreciation	(39,797		)	(30,339		)
Property and equipment, net	$	79,681		$	79,706

Schedule of Accrued Liabilities

Accrued liabilities consist of the following (in thousands):

	June 30, 2016		December 31, 2015
Accrued payroll related costs	$	30,878	$	39,479
Accrued warranty costs	4,841		4,718
Accrued manufacturing costs	6,920		6,397
Accrued professional fees	5,718		4,875
Accrued taxes	1,257		1,347
Other	5,496		4,155
Total accrued liabilities	$	55,110	$	60,971

Schedule of Warranty Accrual

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

	Six Months Ended June 30,
	2016			2015
Warranty accrual, beginning of period	$	4,718		$	3,204
Liabilities accrued for warranties issued during the period	1,438			1,602
Warranty costs incurred during the period	(1,018		)	(834		)
Adjustments related to change in estimate	(297		)	—
Warranty accrual, end of period	$	4,841		$	3,972