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Property, Plant and Equipment
12 Months Ended
Dec. 31, 2011
Property, Plant and Equipment [Abstract]  
Property, Plant and Equipment Disclosure [Text Block]

5. Property, Plant and Equipment

Property, plant and equipment consist of the following at December 31:

2011       2010
(dollars in thousands)
Leasehold improvements $       1,213 $       1,213
Computers and related software 2,130 2,164
Machinery and equipment 3,541 3,823
Office furniture and fixtures 457 473
7,341 7,673
Less accumulated depreciation 7,083 7,248
$ 258 $ 425
 

Depreciation expense was $307, $481, and $660 thousand for 2011, 2010, and 2009, respectively. Repairs and maintenance expense was $39, $18, and $20 thousand for 2011, 2010, and 2009, respectively.