Subsequent Events (Details) $ / shares in Units, ft² in Thousands, $ in Millions	1 Months Ended	3 Months Ended	9 Months Ended
	Oct. 31, 2015 $ / shares shares	Dec. 31, 2015 USD ($) ft² location	Sep. 30, 2015 ft² location $ / shares shares
Office Building [Member]
Subsequent Event [Line Items]
Number of locations			5
Area of office building leased | ft²			68
Scenario forecast
Subsequent Event [Line Items]
Lease termination costs | $		$ 1.7
Scenario forecast | Office Building [Member]
Subsequent Event [Line Items]
Number of locations		3
Area of office building leased | ft²		76
Number of locations, exited		3
Number of locations, entered		1
Restricted stock units
Subsequent Event [Line Items]
Granted (in shares) | shares			1,333,168
Granted (in dollars per share) | $ / shares			$ 12.06
Options
Subsequent Event [Line Items]
Granted (in shares) | shares			2,403,722
Granted (in dollars per share) | $ / shares			$ 12.46
Subsequent Event [Member] | Restricted stock units
Subsequent Event [Line Items]
Granted (in shares) | shares	1,686,875
Granted (in dollars per share) | $ / shares	$ 5.20
Vesting period	4 years
Subsequent Event [Member] | Options
Subsequent Event [Line Items]
Vesting period	4 years
Granted (in shares) | shares	462,573
Granted (in dollars per share) | $ / shares	$ 6.32