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Stock Repurchases (Tables)
12 Months Ended
Dec. 31, 2012
Stock Repurchases [Abstract]  
Schedule of Repurchase of Common Stock
Period   Total
Number of
Shares
Purchased
    Average
Price Paid
per Share
    Total
Number of
Shares
Purchased as
Part of
Publicly
Announced
Program
    Maximum
Dollar Value
of Shares that
May Yet Be
Purchased
Under the
Program
 
8/3/10-8/31/10     339,000     $ 14.08       339,000          
9/1/10-9/22/10     73,000     $ 12.92       73,000          
1/4/11-1/29/11     133,400     $ 14.94       133,400          
Total     545,400     $ 14.15       545,400     $ 8,000,000