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Long-Term Debt (Narrative 2016 Bridge Term Loans) (Details) - 2016 Bridge Term Loan - USD ($)
$ in Millions
Feb. 19, 2016
Feb. 02, 2017
Aug. 05, 2016
Mar. 31, 2016
Feb. 04, 2016
Eurodollar          
Short-term Debt [Line Items]          
Debt instrument, variable rate         4.75%
Eurodollar | Scenario, Forecast          
Short-term Debt [Line Items]          
Debt instrument, variable rate   5.25% 5.00%    
Bridge Loan          
Short-term Debt [Line Items]          
Debt instrument, face amount         $ 80.0
Bridge credit agreement       $ 0.0  
Debt issuance costs expensed $ 1.9        
Minimum | Base Rate          
Short-term Debt [Line Items]          
Debt instrument, stated interest rate         3.75%
Minimum | Base Rate | Scenario, Forecast          
Short-term Debt [Line Items]          
Debt instrument, stated interest rate   4.25% 4.00%