Annual report pursuant to Section 13 and 15(d)

Summary Of Significant Accounting Policies (Components Of Accumulated Other Comprehensive Loss) (Details)

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Summary Of Significant Accounting Policies (Components Of Accumulated Other Comprehensive Loss) (Details) - USD ($)
Dec. 31, 2015
Dec. 31, 2014
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Accumulated other comprehensive loss $ (666,382) $ (695,158)
Minimum Pension Liability [Member]    
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Accumulated other comprehensive loss 4,148,000 1,951,000
Unrealized Loss On Available-For-Sale Investments [Member]    
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Accumulated other comprehensive loss (13,000) (41,000)
Foreign Currency Translation [Member]    
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Accumulated other comprehensive loss $ (4,801,000) $ (2,605,000)