Shareholders' Equity Transactions (Options Activity) (Details) (USD $)	9 Months Ended
	Sep. 30, 2014
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Options outstanding at beginning of period (in shares)	4,533,782
Granted (in shares)	8,977
Excercised (in shares)	(9,885)
Canceled (in shares)	(638,206)
Options outstanding at end of period (in shares)	3,894,668
Weighted Average Exercise Price
Options outstanding at beginning of period - Weighted Average Exercise Price (in dollars per share)	$ 23.86
Granted - Weighted Average Exercise Price (in dollars per share)	$ 16.71
Excercised - Weighted Average Exercise Price (in dollars per share)	$ 14.76
Canceled - Weighted Average Exercise Price (in dollars per share)	$ 28.54
Options outstanding at end of period - Weighted Average Exercise Price (in dollars per share)	$ 23.10
Options exercisable at end of period (in shares)	3,152,241
Stock Options
Weighted Average Exercise Price
Options outstanding at end of period - Weighted Average Exercise Price (in dollars per share)	$ 23.10
Options available for grant at end of period (in shares)	3,646,676	[1]

[1] *Shares available for grant as of September 30, 2014 reduced by net restricted stock and restricted stock unit award and performance share and performance share unit award activity of 462,352 shares and 341,332 shares, respectively during the quarter.