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New Market Tax Credit (Details) - USD ($)
$ in Millions
Sep. 28, 2017
Dec. 31, 2016
Variable Interest Entity [Line Items]    
Variable Interest Entity, Consolidated, Carrying Amount, Liabilities $ 9.7  
Restricted Cash and Cash Equivalents 3.2 $ 0.0
New Market Tax Credit [Member]    
Variable Interest Entity [Line Items]    
Loans Receivable, Net $ 20.6