Stock-based Awards (Details - Options) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Additional disclosure
Stock-based compensation expense	$ 9,908	$ 6,241	$ 22,661	$ 18,033
Options
Number of Options
Outstanding at the beginning of period (in shares)			24,541,512
Granted (in shares)			4,812,839
Exercised (in shares)			(11,517,023)
Canceled/forfeited (in shares)			(748,821)
Outstanding at the end of the period (in shares)	17,088,507		17,088,507		24,541,512
Weighted-Average Exercise Price
Outstanding at the beginning of period (in dollars per share)			$ 8.29
Granted (in dollars per share)			18.41
Exercised (in dollars per share)			6.29
Canceled/forfeited (in dollars per share)			8.68
Outstanding at the end of the period (in dollars per share)	$ 12.48		$ 12.48		$ 8.29
Additional disclosure
Weighted average remaining contractual life (in years)			7 years 10 months 24 days		5 years 5 months 27 days
Remaining stock-based compensation expense for unvested awards	$ 60,200		$ 60,200
Weighted average period over which remaining stock based compensation expense for unvested awards is expected to be recognized			3 years 2 months 19 days
Stock-based compensation expense	$ 5,300	$ 3,500	$ 12,300	$ 10,900