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Equipment and Leasehold Improvements (Tables)
 12 Months Ended
Dec. 31, 2013
Equipment and Leasehold Improvements [Abstract]  
Schedule of Equipment and Leasehold Improvements
    December 31,  
    2013     2012  
Equipment   $ 25,597     $ 41,447  
Leasehold improvements     2,952       2,465  
      28,549       43,912  
Less accumulated depreciation and amortization     18,105       31,623  
    $ 10,444     $ 12,289