Quarterly report pursuant to Section 13 or 15(d)

Summary of Significant Accounting Policies Summary of Significant Accounting Policies (Details)

v3.6.0.2
Summary of Significant Accounting Policies Summary of Significant Accounting Policies (Details) - USD ($)
 3 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Sep. 30, 2016
New Accounting Pronouncements or Change in Accounting Principle [Line Items]      
Increase (Decrease) in Deferred Income Taxes $ (11,400,000) $ (500,000)  
New Accounting Pronouncement, Early Adoption, Effect [Member]      
New Accounting Pronouncements or Change in Accounting Principle [Line Items]      
Increase (Decrease) in Deferred Income Taxes 2,700,000    
Adjustments for New Accounting Pronouncement [Member]      
New Accounting Pronouncements or Change in Accounting Principle [Line Items]      
Debt Issuance Costs, Net $ 1,100,000   $ 1,200,000.0