CONSOLIDATED AND CONDENSED BALANCE SHEETS - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Current assets
Cash and cash equivalents	$ 278,690	$ 355,859
Short-term investments	46,654	60,000
Accounts receivable, net of allowance of $3,240 and $2,545 at September 30, 2015 and December 31, 2014, respectively	9,719	5,949
Inventories	22,552	19,798
Prepaid expenses and other current assets	75,486	45,262
Total current assets	433,101	486,868
Property and equipment, net	88,642	60,639
Goodwill and intangible assets, net	3,899	6,478
Long-term investments	74,460	0
Other noncurrent assets	1,242	1,538
Total assets	601,344	555,523
Current liabilities
Accounts payable	192,552	147,873
Accrued expenses	52,083	42,335
Deferred revenue	45,027	26,784
Other current liabilities	24,070	15,600
Total current liabilities	313,732	232,592
Other liabilities	32,916	17,392
Total liabilities	$ 346,648	$ 249,984
Commitments and contingencies
Convertible preferred stock, $0.001 par value per share: 10,000,000 shares authorized and none issued at September 30, 2015 and December 31, 2014	$ 0	$ 0
Stockholders’ equity:
Additional paid-in capital	374,794	363,944
Accumulated deficit	(120,070)	(58,122)
Accumulated other comprehensive loss	(112)	(366)
Total stockholders’ equity	254,696	305,539
Total liabilities and stockholders’ equity	601,344	555,523
Class A common stock
Stockholders’ equity:
Common stock	44	37
Class B common stock
Stockholders’ equity:
Common stock	$ 40	$ 46