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Property, Plant and Equipment
 12 Months Ended
Dec. 31, 2016
Property Plant And Equipment [Abstract]  
Property, Plant and Equipment

5.

Property, plant and equipment:

Property, plant and equipment consisted of the following:

 

 

 

December 31,

 

 

 

2016

 

 

2015

 

Research equipment

 

$

6,789

 

 

$

6,925

 

Office furniture and equipment

 

 

1,045

 

 

 

1,040

 

Computer equipment

 

 

2,283

 

 

 

2,236

 

Leasehold improvements

 

 

6,370

 

 

 

6,370

 

Less: accumulated depreciation and amortization

 

 

(15,083

)

 

 

(14,582

)

Net book value

 

$

1,404

 

 

$

1,989