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Short-term Investments
9 Months Ended
Sep. 30, 2013
Short-term Investments [Abstract]  
Short-term Investments
3.  Short-term Investments
 
The Company held $17.0 million of short-term investments at September 30, 2013.  The Company has classified these investments as available for sale.  These investments are federally insured certificates of deposit and have a maturity date of October 31, 2013.