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Income Taxes - Income (Loss) From Continuing Operations Before Income Tax (Details) (USD $)
 12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Income (Loss) from Operations before Income Tax Expense (Benefit) [Abstract]      
Income (loss) before income taxes $ 6,843,172 $ 375,181 $ 5,660,810
United States
      
Income (Loss) from Operations before Income Tax Expense (Benefit) [Abstract]      
Income (loss) before income taxes 7,917,000 971,000 5,458,000
Denmark | Foreign Tax Authority
      
Income (Loss) from Operations before Income Tax Expense (Benefit) [Abstract]      
Income (loss) before income taxes (295,000) (161,000) 390,000
Norway | Foreign Tax Authority
      
Income (Loss) from Operations before Income Tax Expense (Benefit) [Abstract]      
Income (loss) before income taxes 570,000 726,000 61,000
Brazil | Foreign Tax Authority
      
Income (Loss) from Operations before Income Tax Expense (Benefit) [Abstract]      
Income (loss) before income taxes (1,375,000) (1,210,000) (260,000)
Singapore | Foreign Tax Authority
      
Income (Loss) from Operations before Income Tax Expense (Benefit) [Abstract]      
Income (loss) before income taxes 25,000 49,000 12,000
Japan | Foreign Tax Authority
      
Income (Loss) from Operations before Income Tax Expense (Benefit) [Abstract]      
Income (loss) before income taxes $ 1,000 $ 0 $ 0