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Stock-Based Compensation (Tables)
 12 Months Ended
Dec. 30, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Schedule of Compensation Costs
Compensation cost charged against operations for the Plan and the 2017 MSPP described in "Note 10. Accumulated Other Comprehensive Income (Loss) and Shareholders' Equity" in the Notes to Consolidated Financial Statements was as follows (in thousands):
 
December 30, 2017
 
December 31, 2016
 
January 2, 2016
Compensation cost
$
7,750

 
$
8,141

 
$
9,097

The following table details deferred compensation, which is a combination of cash and stock, and the affected line item in the Consolidated Balance Sheets where deferred compensation is presented (in thousands):
 
December 30, 2017
 
December 31, 2016
Current maturities of other long-term obligations
$
719

 
$
876

Other long-term liabilities
11,581

 
15,104

Total deferred compensation
$
12,300

 
$
15,980

 
 
 
 
Total fair-market value of deferred compensation
$
8,885

 
$
12,203

The total income tax benefit recognized in the income statement for share-based compensation arrangements was as follows (in thousands):
 
December 30, 2017
 
December 31, 2016
 
January 2, 2016
Income tax benefit
$
2,581

 
$
2,809

 
$
3,086
Schedule of Valuation Assumptions
The stock-based compensation expense for the following year-end dates were estimated on the date of grant using the Black-Scholes option-pricing model with the following assumptions by grant year:
 
December 30, 2017
 
December 31, 2016
 
January 2, 2016
Expected term
6 years

 
6 years

 
6 years

Expected volatility (weighted-average)
38.07
%
 
38.96
%
 
43.54
%
Expected dividend yield (weighted-average)
2.36
%
 
3.30
%
 
1.94
%
Risk-free interest rate (weighted-average)
2.17
%
 
1.41
%
 
1.69
%
Schedule of Share-based Compensation, Stock Options, Activity
The following table summarizes the changes in outstanding stock options:
 
Number of Shares
 
Weighted Average Exercise Price
Outstanding as of January 3, 2015
3,335,445

 
$
29.93

Granted
350,038

 
51.54

Exercised
(302,635
)
 
30.22

Forfeited or Expired
(24,525
)
 
39.14

Outstanding as of January 2, 2016
3,358,323

 
$
32.09

Granted
877,277

 
32.18

Exercised
(609,663
)
 
30.52

Forfeited or Expired
(121,602
)
 
52.24

Outstanding as of December 31, 2016
3,504,335

 
$
31.68

Granted
537,795

 
46.61

Exercised
(446,817
)
 
25.55

Forfeited or Expired
(33,029
)
 
40.81

Outstanding as of December 30, 2017
3,562,284

 
$
34.63
Schedule of Nonvested Restricted Stock Units Activity
A summary of the Corporation’s non-vested stock options and changes during the year are presented below:
 
 
Shares
 
Weighted Average Grant-Date Fair Value
Non-vested as of December 31, 2016
2,162,157

 
$
11.12

Granted
537,795

 
14.41

Vested
(731,085
)
 
11.02

Forfeited
(33,029
)
 
12.19

Non-vested as of December 30, 2017
1,935,838

 
$
12.05
Stock Option Vested or Expected to Vest and are Exercisable
Information about stock options expected to vest or currently exercisable is as follows:
 
December 30, 2017

Number
 
Weighted-Average Exercise Price
 
Weighted-Average Remaining Service Period
(years)
 
Aggregate Intrinsic Value
($000s)
Expected to vest
1,819,673

 
$
39.31

 
7.8
 
$
5,900

Exercisable
1,626,446

 
$
28.97

 
3.7
 
$
16,440
Schedule of Share-based Compensation Arrangement Other Information
Other information for the last three years is as follows (in thousands):
 
December 30, 2017
 
December 31, 2016
 
January 2, 2016
Total fair value of shares vested
$
8,057

 
$
7,206

 
$
5,554

Total intrinsic value of options exercised
$
7,270

 
$
11,985

 
$
6,412

Cash received from exercise of stock options
$
11,418

 
$
18,609

 
$
9,145

Tax benefit realized from exercise of stock options
$
2,423

 
$
4,142

 
$
2,111

Weighted-average grant-date fair value of options granted
$
14.41

 
$
8.80

 
$
18.45
Schedule of Share-based Compensation, Restricted Stock Units Activity
The following table summarizes the changes in outstanding RSUs:
 
Number of Shares
 
Weighted-Average Grant Date Fair Value
Outstanding as of January 3, 2015
26,026

 
$
27.76

Granted
23,000

 
51.54

Vested
(10,526
)
 
21.19

Forfeited
—

 
—

Outstanding as of January 2, 2016
38,500

 
$
43.77

Granted
25,000

 
32.06

Vested
—

 
—

Forfeited
(3,000
)
 
51.54

Outstanding as of December 31, 2016
60,500

 
$
38.54

Granted
—

 
—

Vested
(18,500
)
 
35.36

Forfeited
(5,000
)
 
51.54

Outstanding as of December 30, 2017
37,000

 
$
38.38

The total value of shares vested was as follows (in thousands):
 
2017

 
2016

 
2015

Value of shares vested
$
654

 
$
—

 
$
223