Quarterly report pursuant to Section 13 or 15(d)

Intangible Assets - Summary of Intangible Assets (Details)

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Intangible Assets - Summary of Intangible Assets (Details) (USD $)
In Thousands, unless otherwise specified
6 Months Ended 12 Months Ended
Jun. 30, 2014
Dec. 31, 2013
Finite Lived Intangible Assets [Line Items]    
Estimated useful life of intangible asset 2 years  
Gross carrying amount $ 1,161 $ 981
Accumulated amortization 846 766
Net amount 315 215
Licenses
   
Finite Lived Intangible Assets [Line Items]    
Estimated useful life of intangible asset 10 years 10 years
Gross carrying amount 185 185
Accumulated amortization 72 63
Net amount 113 122
Patents and Websites
   
Finite Lived Intangible Assets [Line Items]    
Estimated useful life of intangible asset 5 years 5 years
Gross carrying amount 871 723
Accumulated amortization 710 662
Net amount 161 61
Commercial
   
Finite Lived Intangible Assets [Line Items]    
Estimated useful life of intangible asset 2 years 2 years
Gross carrying amount 105 73
Accumulated amortization 64 41
Net amount $ 41 $ 32