Annual report pursuant to Section 13 and 15(d)

Recent Accounting Pronouncements - New Accounting Pronouncement, Early Adoption (Details)

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Recent Accounting Pronouncements - New Accounting Pronouncement, Early Adoption (Details) - USD ($)
Dec. 31, 2015
Dec. 31, 2014
New Accounting Pronouncement, Early Adoption [Line Items]    
Deferred tax liabilities, net $ 13,191,000 $ 9,204,000
New Accounting Pronouncement, Early Adoption, Effect    
New Accounting Pronouncement, Early Adoption [Line Items]    
Current deferred tax assets, net   (6,567,000)
Deferred tax liabilities, net   6,567,000
Other Assets, Noncurrent | New Accounting Pronouncement, Early Adoption, Effect    
New Accounting Pronouncement, Early Adoption [Line Items]    
Deferred finance costs, net   (20,918,000)
Long-Term Debt, Excluding Current Maturities | New Accounting Pronouncement, Early Adoption, Effect    
New Accounting Pronouncement, Early Adoption [Line Items]    
Deferred finance costs, net   $ 20,918,000