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Income Taxes - Additional Information (Details) - USD ($)
1 Months Ended 3 Months Ended
Mar. 31, 2016
Mar. 31, 2016
Mar. 31, 2015
Schedule Of Effective Tax Rates [Line Items]      
Changes in unrecognized tax benefits   $ 0 $ 0
Income tax examination, penalties and interest expense $ 1,900,000    
Danish Tax Authority ("SKAT")      
Schedule Of Effective Tax Rates [Line Items]      
Income tax examination, valuation of transferred assets $ 5,400,000    
Maximum      
Schedule Of Effective Tax Rates [Line Items]      
Effective income tax rate, percent   2.00% 2.00%