Quarterly report pursuant to Section 13 or 15(d)

Intangible Assets and Goodwill (Details)

v2.4.0.6
Intangible Assets and Goodwill (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 30, 2012
Jun. 30, 2011
Jun. 30, 2012
Jun. 30, 2011
Dec. 31, 2011
Summary of intangible assets and goodwill          
Gross $ 2,576   $ 2,576   $ 2,576
Accumulated Amortization (2,429)   (2,429)   (2,364)
Impairment             
Net 147   147   212
Goodwill (Indefinite life) 2,926   2,926   2,926
Intangible Assets and Goodwill (Additional Textual) [Abstract]          
Amortization expense 32,000 32,000 65,000 65,000  
Patents (4-10 years) [Member]
         
Summary of intangible assets and goodwill          
Gross 1,914   1,914   1,914
Accumulated Amortization (1,767)   (1,767)   (1,702)
Impairment             
Net 147   147   212
Patents (4-10 years) [Member] | Maximum [Member]
         
Intangible assets and goodwill (Textual) [Abstract]          
Useful life     10 years    
Patents (4-10 years) [Member] | Minimum [Member]
         
Intangible assets and goodwill (Textual) [Abstract]          
Useful life     4 years    
Trademarks (6 years) [Member]
         
Summary of intangible assets and goodwill          
Gross 69   69   69
Accumulated Amortization (69)   (69)   (69)
Impairment             
Net 0   0   0
Intangible assets and goodwill (Textual) [Abstract]          
Useful life     6 years    
Other (4 to 6 years) [Member]
         
Summary of intangible assets and goodwill          
Gross 593   593   593
Accumulated Amortization (593)   (593)   (593)
Impairment             
Net $ 0   $ 0   $ 0
Other (4 to 6 years) [Member] | Maximum [Member]
         
Intangible assets and goodwill (Textual) [Abstract]          
Useful life     6 years    
Other (4 to 6 years) [Member] | Minimum [Member]
         
Intangible assets and goodwill (Textual) [Abstract]          
Useful life     4 years