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Share Repurchase Program (Narrative) (Details) (USD $)
In Millions, except Share data, unless otherwise specified
 1 Months Ended 12 Months Ended 20 Months Ended
May 31, 2012
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2013
Class of Stock Disclosures [Abstract]        
Stock Repurchase Program, Authorized Amount, Increase $ 3      
Stock repurchase program total authorized amount 8      
Number of shares of common stock repurchased by the company (in shares)   0 686,208 812,800
Aggregate cost of common stock repurchased by the company     $ 4.5 $ 5.3
Average cost per share of the repurchased common stock (in dollars per share)     $ 6.60