Annual report pursuant to Section 13 and 15(d)

Business Segments Information / Major Customers Revenues and Property, Plant, and Equipment by Region (Details)

v2.4.0.8
Business Segments Information / Major Customers Revenues and Property, Plant, and Equipment by Region (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 12 Months Ended
Dec. 31, 2013
Sep. 30, 2013
Jun. 30, 2013
Mar. 31, 2013
Dec. 31, 2012
Sep. 30, 2012
Jun. 30, 2012
Mar. 31, 2012
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Revenue from External Customer [Line Items]                      
Revenues $ 20,655 $ 21,073 $ 21,248 $ 19,496 $ 20,749 $ 20,949 $ 18,284 $ 19,461 $ 82,472 $ 79,443 $ 83,634
Property and equipment, net 5,419       5,966       5,419 5,966  
North America
                     
Revenue from External Customer [Line Items]                      
Property and equipment, net 5,070       5,553       5,070 5,553  
Germany
                     
Revenue from External Customer [Line Items]                      
Property and equipment, net 316       356       316 356  
Asia
                     
Revenue from External Customer [Line Items]                      
Property and equipment, net 33       57       33 57  
Customer Concentration Risk | Revenues
                     
Revenue from External Customer [Line Items]                      
Revenues                 82,472 79,443 83,634
Customer Concentration Risk | North America | Revenues
                     
Revenue from External Customer [Line Items]                      
Revenues                 52,871 51,413 51,706
Customer Concentration Risk | Europe | Revenues
                     
Revenue from External Customer [Line Items]                      
Revenues                 21,980 19,414 22,083
Customer Concentration Risk | Asia and Latin America | Revenues
                     
Revenue from External Customer [Line Items]                      
Revenues                 $ 7,621 $ 8,616 $ 9,845