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Property and Equipment
9 Months Ended
Sep. 30, 2014
Property, Plant and Equipment [Abstract]  
Property, Plant and Equipment Disclosure [Text Block]
2.
Property and Equipment
 
Property and equipment are stated at costs less accumulated depreciation and amortization (in thousands), and consist of the following:
 
 
 
September 30
 
December 31,
 
 
 
2014
 
2013
 
Equipment
 
$
17,995
 
$
17,327
 
Software
 
 
4,708
 
 
4,045
 
Furniture and equipment
 
 
2,769
 
 
2,600
 
Leasehold improvements
 
 
5,879
 
 
5,810
 
Total
 
 
31,351
 
 
29,782
 
Less: accumulated depreciation and amortization
 
 
(24,998)
 
 
(23,699)
 
 
 
$
6,353
 
$
6,083
 
 
Depreciation and amortization expense of property and equipment was approximately $0.6 million and $0.9 million for the three months ended September 30, 2014 and 2013, respectively. Depreciation and amortization expense of property and equipment was approximately $1.8 million and $2.4 million for the nine months ended September 30, 2014 and 2013, respectively.