Quarterly report pursuant to Section 13 or 15(d)

Debt (Details)

v3.4.0.3
Debt (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Dec. 31, 2015
Long-term Debt, Fiscal Year Maturity [Abstract]      
Debt outstanding $ 222.0   $ 235.0
LIBOR [Member]      
Long-term Debt, Fiscal Year Maturity [Abstract]      
Base margin 2.50%    
Base Rate [Member]      
Long-term Debt, Fiscal Year Maturity [Abstract]      
Base margin 1.25%    
Amended and Restated [Member]      
Debt Instrument [Line Items]      
Debt instrument, maturity date Jan. 28, 2020    
Financing costs $ 2.7    
Amortization period of debt issuance costs 5 years    
Long-term Debt, Fiscal Year Maturity [Abstract]      
Revolving loans potential increment in maximum borrowing capacity $ 75.0    
Duration of interest rate cash flow hedge 3 years    
Interest rate range, minimum 2.93%    
Interest rate range, maximum 4.75%    
Effective interest rate 3.40%    
Interest expense, net $ 2.0 $ 1.7  
Amended and Restated [Member] | Swap [Member]      
Long-term Debt, Fiscal Year Maturity [Abstract]      
Derivative notional amount 100.0    
Term Loan Facility [Member]      
Long-term Debt, Fiscal Year Maturity [Abstract]      
Term loan payments 2016 14.1    
Term loan payments 2017 21.6    
Term loan payments 2018 28.1    
Term loan payments 2019 30.0    
Term loan payments 2020 36.2    
Borrowings outstanding 130.0    
Revolving Loan Facility [Member]      
Long-term Debt, Fiscal Year Maturity [Abstract]      
Revolving loans maximum borrowing capacity 150.0    
Revolving loans amount outstanding 92.0   101.0
Letters of credit outstanding $ 0.0   $ 0.0