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Property and equipment
12 Months Ended
Dec. 31, 2013
Property, Plant and Equipment [Abstract]  
Property, Plant and Equipment Disclosure [Text Block]
4. Property and equipment:
 
Property and equipment consist of the following:
 
 
 
December 31,
 
 
 
2013
 
2012
 
Furniture and fixtures
 
$
285,987
 
$
285,987
 
Software
 
 
57,563
 
 
57,563
 
Leasehold improvements
 
 
39,909
 
 
39,909
 
Computer and office equipment
 
 
248,572
 
 
245,578
 
 
 
 
632,031
 
 
629,037
 
Less - accumulated depreciation and amortization
 
 
(587,453)
 
 
(477,493)
 
 
 
$
44,578
 
$
151,544
 
 
Depreciation and amortization expense was $ 109,960, $ 127,350 and $ 116,465 for the years ended December 31, 2013, 2012 and 2011, respectively.