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Sale of Investment
12 Months Ended
Dec. 31, 2012
Sale of Investment [Abstract]  
Sale of Investment
14.           Sale of Investment

In January 2009, a private company in which we held preferred stock (recorded in "other assets") was acquired by a third party.  During the second quarter of 2010, we recognized a gain of $1.2 million related to the receipt of a final escrow payment as a result of this sale.