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Subsequent Events	12 Months Ended
Subsequent Events	Dec. 31, 2014
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events In January 2015, common stock reserved for issuance under the 2013 Plan increased by 1,058,286 to 1,816,360 shares. In January 2015, common stock reserved for sale under the ESPP increased by 264,571 to 383,204 shares. These annual automatic share increases are part of the 2013 Plan and ESPP as discussed in note 9.