Earnings per Share, Anti Dilutive Securities (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended						6 Months Ended
	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Jun. 30, 2014	Jun. 30, 2013
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total anti-dilutive securities (in shares)	21,462				36,001		22,218	37,463
Dividends per common share (in dollars per share)	$ 0.0625	$ 0.0625	$ 0.0575	$ 0.0575	$ 0.0575	$ 0.0575	$ 0.1250	$ 0.115
Stock options [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total anti-dilutive securities (in shares)	5,566				19,484		5,313	19,678
Restricted Stock and Performance Shares [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total anti-dilutive securities (in shares)	15,896				16,517		16,905	17,785