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Debt (Tables)
12 Months Ended
Dec. 31, 2017
Debt Disclosure [Abstract]  
Summary of Components of Long-Term Borrowings and Capital Lease Obligations
The following table summarizes the components of long-term debt and capital lease obligations:
(in millions)
2017
 
2016
Amended 2016 Credit Agreement:
 
 
 
Revolving credit facility
$
277.0

 
$
63.2

Capital lease obligations
0.7

 
0.8

Total long-term borrowings and capital lease obligations, including current portion
277.7

 
64.0

Less: Current capital lease obligations
0.3

 
0.5

Total long-term borrowings and capital lease obligations
$
277.4

 
$
63.5

Summary of Carrying Amount and Fair Value of Debt Instruments
The following table summarizes the carrying amounts and fair values of the Company’s financial instruments:
 
2017
 
2016
(in millions)
Notional
Amount
 
Fair
Value
 
Notional
Amount
 
Fair
Value
Long-term debt (a)
$
277.7

 
$
277.7

 
$
64.0

 
$
64.0

(a)
Long-term debt includes current portions of long-term debt and current portions of capital lease obligations of $0.3 million and $0.5 million as of December 31, 2017 and 2016, respectively.