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5. Property, Plant and Equipment
3 Months Ended
Mar. 31, 2017
Property, Plant and Equipment [Abstract]  
Property, Plant and Equipment

Property, plant and equipment consist of the following at:

 

(Dollars in thousands) March 31, 2017   December 31, 2016
   
Leasehold improvements $ 39   $ 39
Computers and related software   1,068     1,068
Machinery and equipment   892     892
Office furniture and fixtures   25     25
    2,024     2,024
Less: Accumulated depreciation   1,884     1,864
  $ 140   $ 160
             

Depreciation expense was $20 thousand and $85 thousand for the three months ended March 31, 2017 and the year ended December 31, 2016, respectively.