Share-Based Compensation Schedule Of Stock Option Transactions (Details) - USD ($) $ / shares in Units, $ in Millions	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Outstanding at beginning of period	1,996,215
Options granted	425,877
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period	(15,000)
Options forfeited	(2,817)
Options cancelled	(60,000)
Outstanding at end of period	2,344,275
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Weighted average exercise price, beginning of year	$ 28.60
Weighted average exercise price, granted in period	21.69
Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price	19.37
Weighted average exercise price, forfeited in period	31.31
Weighted average exercise price, canceled in period	27.84
Weighted average exercise price, end of year	$ 27.42
Options exercisable, shares	1,665,825
Options exercisable, weighted average exercise price	$ 28.32
Unvested options, shares	678,450
Unvested options, weighted average exercise price	$ 25.20
Weighted average remaining contractual term, options outstanding	3 years 2 months 25 days
Weighted average remaining contractual term, options exercisable	2 years 1 month 27 days
Weighted average remaining contractual term, options unvested	5 years 10 months 17 days
Aggregate intrinsic value, options outstanding	$ 0.0
Aggregate intrinsic value, options exercisable	0.0
Aggregate intrinsic value, options unvested	0.0
Employee Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Intrinsic value of options exercised	$ 0.1	$ 0.6