Stock-Based Compensation Non-Qualified Stock Options Activity (Details) - NSO	6 Months Ended
	Jun. 30, 2016 $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Outstanding, shares, beginning of period (shares) | shares	1,374,456
Granted (shares) | shares	1,241,354
Forfeitures (shares) | shares	(172,789)
Cancellations (shares) | shares	(20,648)
Outstanding, shares, end of period (shares) | shares	2,422,373
Vested and exercisable, shares end of period (shares) | shares	605,762
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract]
Outstanding, beginning of period, weighted average exercise price (usd per share) | $ / shares	$ 60.62
Granted, weighted average exercise price (usd per share) | $ / shares	29.22
Forfeitures, weighted average exercise price (usd per share) | $ / shares	40.20
Cancellations, weighted average exercise price (usd per share) | $ / shares	61.32
Outstanding, end of period, weighted average exercise price (usd per share) | $ / shares	45.98
Vested and exercisable, weighted average exercise price, end of period (usd per share) | $ / shares	$ 61.01