Stockholders' Deficit (Tables)

12 Months Ended

Dec. 31, 2015

Stockholders' Deficit

Schedule of option activity under the 2010 Stock Plan

		Shares Subject to
		Outstanding Options
	Shares Available		Weighted Average
	for Grant	Shares	Exercise Price
Balance at December 31, 2014	5,399,816	14,655,043	$	21.96
Options granted	(1,900,855)	1,900,855	$	79.14
Options exercised	—	(5,155,863)	$	16.62
Options cancelled	347,756	(347,756)	$	45.52
Balance at December 31, 2015	3,846,717	11,052,279	$	33.55

Schedule of stock options outstanding and exercisable by exercise price range

	Options Outstanding				Options Exercisable
			Weighted			Weighted
		Weighted Average	Average			Average
	Number	Remaining	Exercise		Number	Exercise
Range of Exercise Prices	Outstanding	Contractual Life	Price		Exercisable	Price
$2.80 - $13.34	1,180,265	1.31	$	8.32	1,180,265	$	8.32
$13.50 - $17.47	1,111,868	2.13		14.81	1,111,868		14.81
$17.50 - $17.50	71,811	3.86		17.50	71,811		17.50
$17.79 - $17.79	1,501,624	3.01		17.79	1,501,624		17.79
$17.89 - $17.89	164,302	3.48		18.09	161,939		18.10
$18.32 - $18.32	2,572,415	4.05		18.32	2,378,291		18.32
$18.97 - $40.85	1,126,574	4.32		27.91	925,169		26.41
$47.24 - $64.55	1,441,393	5.20		59.92	866,339		60.18
$67.06 - $67.97	67,589	5.83		67.22	25,778		67.21
$73.21 - $128.21	1,814,438	6.82		79.39	16,845		76.10
	11,052,279				8,239,929

Schedule of activity summarized under all stock plans other than options

		Shares Subject to
	Shares Available	Outstanding Awards
	for Grant	Shares	Grant Date Value
Balance at December 31, 2014	1,001,523	398,477		—
RSUs granted	(206,614)	206,614	$	79.52
PSUs granted	—	—		—
RSUs cancelled	34,566	(34,566)	$	62.50
PSUs cancelled	4,958	(4,958)	$	64.55
Balance at December 31, 2015	834,433	565,567		—