Stock-Based Compensation (Tables)
 6 Months Ended
Jun. 30, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Schedule of Impact of Stock-Based Compensation in Consolidation and Combined Statements of Income
Stock-based compensation expense and the associated tax benefits impacting our Condensed Consolidated Statements of Income were as follows:
 
 
Three Months Ended
 
Six Months Ended
 
 
June 30,
 
July 1,
 
June 30,
 
July 1,
(In thousands)
 
2017
 
2016
 
2017
 
2016
Compensation costs for equity-based awards
 
$
563

 
$
872

 
$
1,546

 
$
2,348

Compensation costs for liability-based awards
 
1,345

 
683

 
1,449

 
920

Total compensation costs, pre-tax
 
$
1,908

 
$
1,555

 
$
2,995

 
$
3,268

Future tax benefit
 
$
679

 
$
554

 
$
1,065

 
$
1,165
Schedule of Non-Qualified Stock Options, Activity
The following table provides a summary of the activities for NQOs and RSUs for the six months ended June 30, 2017:
 
 
NQOs
 
RSUs
(In thousands, except per share data)
 
Shares
 
Weighted Average Exercise Price Per Share
 
Shares
 
Weighted Average Grant Date Fair Value Per Share
Outstanding at January 1, 2017
 
384

 
$21.47
 
285

 
$23.01
Granted
 
71

 
$22.27
 
136

 
$23.25
Exercised
 
(105
)
 
$18.01
 
 
 
 
Vested
 
 
 
 
 
(110
)
 
$24.33
Forfeited or expired
 
(19
)
 
$22.59
 
(23
)
 
$21.28
Outstanding at June 30, 2017
 
331

 
$22.67
 
288

 
$22.77
Schedule of Weighted Average Assumptions
The following weighted-average assumptions were utilized in deriving the fair value for NQOs for the six months ended June 30, 2017:
Expected volatility
 
30.7
%
Expected life (in years)
 
7

Risk-free rates
 
2.30
%
Weighted-average grant date fair value per share
 
$8.26