A summary of stock option activity for the years ended December 31, 2011, 2012 and 2013 is as follows (in thousands, except per share amounts and years):



	Options Outstanding
	Number of Options		Weighted Average Exercise Price per Share		Weighted Average Remaining Contractual Terms (years)	Aggregate Intrinsic Value
December 31, 2010	7,796		$	6.27	6.57	$	34,228
Grants	1,751		9.33
Exercises	(1,167	)	2.21			9,077
Early exercised options repurchased	(476	)	9.51
Forfeited/Cancelled	—		—
December 31, 2011	7,904		7.35		6.77	6,570
Grants	1,521		3.42
Exercises	(708	)	1.78			925
Forfeited/Cancelled	(2,584	)	8.23
December 31, 2012	6,133		6.65		4.91	657
Grants	922		2.28
Exercises	(326	)	0.98			409
Forfeited/Cancelled	(2,603	)	7.35
December 31, 2013	4,126		5.68		5.75	87
Options vested and expected to vest at December 31, 2013	4,006		5.77		5.66	87

Options exercisable at December 31, 2013	2,805		$	6.76	4.37	$	87

Summary of Share Based Award Activity [Table Text Block]

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Disclosure of the number and weighted-average grant date fair value for restricted stock and restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock and restricted stock units that were granted, vested, or forfeited during the year.

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