Stock-Based Compensation (Stock Options Activity) (Details) $ / shares in Units, $ in Millions	9 Months Ended
	Sep. 30, 2016 USD ($) $ / shares shares
Stock Option Activity (in shares)
Options Outstanding, Beginning | shares	1,678,900
Granted | shares	245,439
Exercised | shares	(32,833)
Forfeited or expired | shares	(91,385)
Adjustment due to Spin-off, Number of Shares | shares	0
Options Outstanding, Ending | shares	1,800,121
Options Exercisable | shares	1,432,312
Weighted Average Exercise Price (in dollars per share)
Options Outstanding, Beginning | $ / shares	$ 28.32
Granted | $ / shares	49.58
Exercised | $ / shares	22.00
Forfeited or expired | $ / shares	46.13
Adjustment due to Spin-off, Weighted Average Exercise Price | $ / shares	(2.02)
Options Outstanding, Ending | $ / shares	28.41
Options Exercisable | $ / shares	$ 23.87
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Options Outstanding, Weighted Average Remaining Contractual Term	5 years 9 months 18 days
Options Exercisable, Weighted Average Remaining Contractual Term	5 years
Options Outstanding, Intrinsic Value | $	$ 2.3
Options Exercisable, Intrinsic Value | $	$ 2.3