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Accounting Policies - Earnings Per Share Anti-Dilutive (Details)
3 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Stock Options and SARs [Members]
   
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Antidilutive securities excluded from earnings per share (shares) 32,983 4,000
Performance Shares [Member]
   
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Antidilutive securities excluded from earnings per share (shares) 31,594 25,300