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Stockholders Equity (Narratives) (Details) (USD $)
 3 Months Ended 12 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Dec. 31, 2013
Weighted average stock anti dilutive effect excluded from calculation of earnings per share 254,662   653,843
Stock Repurchase Program, Authorized Amount $ 70,000,000    
Treasury Stock, Value, Acquired, Cost Method 10,393,000 0  
Stock Repurchase Program Remaining Authorized Repurchase Amount 23,100,000    
Stock repurchase program remaining number of shares authorized to be repurchased 1,341,002    
Preferred Stock [Member]
      
Issuance Costs Stock 10,100,000    
Common Stock [Member]
      
Issuance Costs Stock $ 13,600,000