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Employee Benefit Plans (Tables)
 6 Months Ended
Jun. 30, 2017
Retirement Benefits [Abstract]  
Schedule of Defined Benefit Plans Disclosures
The following table provides the components of the net periodic benefit cost of the qualified defined-benefit pension plan (in millions):

Three Months Ended

Six Months Ended

June 30,

June 30,

2017

2016

2017
 
2016
PENSION BENEFITS COST







Interest cost
$
0.3


$
0.3


$
0.6


$
0.6

Expected return on plan assets
(0.2
)

(0.5
)

(0.4
)

(1.0
)
Amortization of net actuarial loss
0.2


0.2


0.4


0.4

Net periodic benefit cost
$
0.3


$
—


$
0.6


$
—