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Share Repurchases (Tables)
12 Months Ended
Dec. 31, 2012
Share Repurchases [Abstract]  
Share repurchases
Our Board authorized a share repurchase program which was publicly announced on October 21, 2010. The share repurchase program allowed for the repurchase of up to $60 million of our common stock from time to time in the open market or in privately negotiated transactions through October 19, 2012. No shares were repurchased between October 1, 2012 and October 19, 2012 pursuant to the program.

Period
Total Number
of Shares
Purchased
Average
Price
Paid per
Share
Total Number
of Shares
Purchased as
Part of Publicly
Announced
Plans or
Programs
Maximum
Approximate
Dollar Value of
Shares that May
Yet Be Purchased
Under the Plans or
Programs
October 1 through 19, 2012
2,254,953
Total