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Summary of Significant Accounting Policies (Intangibles) (Details) - USD ($)
 12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Intangible Assets [Line Items]      
Intangibles, net of accumulated amortization $ 1,777,000 $ 1,902,000  
Amortization expense 125,000 125,000 $ 130,000
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]      
2016 125,000    
2017 125,000    
2018 125,000    
2019 125,000    
2020 125,000    
2021 125,000    
2022 125,000    
2023 125,000    
2024 125,000    
Finite-Lived Intangible Assets, Net [Abstract]      
Gross Carrying Value 3,159,000 3,159,000  
Accumulated Amortization 1,382,000 1,257,000  
Net Book Value 1,777,000 1,902,000  
Impairment of intangible assets 0 0  
Trade Name      
Intangible Assets [Line Items]      
Indefinite-lived intangible asset, gross carrying value 654,000    
Finite-Lived Intangible Assets, Net [Abstract]      
Gross Carrying Value 654,000 654,000  
Accumulated Amortization 0 0  
Net Book Value $ 654,000 $ 654,000  
Developed Technology      
Intangible Assets [Line Items]      
Intangible assets, useful life 20 years 20 years  
Intangible assets, weighted average remaining life 9 years    
Finite-Lived Intangible Assets, Net [Abstract]      
Gross Carrying Value $ 2,505,000 $ 2,505,000  
Accumulated Amortization 1,382,000 1,257,000  
Net Book Value $ 1,123,000 $ 1,248,000