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SHARE-BASED COMPENSATION (Tables)
 12 Months Ended
Dec. 30, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Valuation Assumptions Used For Stock Options
The following assumptions were used to estimate the fair value of share options and restricted stock for the years ended: 
 
2018
 
2017
 
2016
 
Weighted-average fair value of awards
$
12.27

 
$
3.94

 
$
4.05

 
Weighted-average risk-free interest rate
2.7

%
1.8

%
1.1

%
Weighted-average dividend yield
$
1.00

 
$
1.00

 
$
1.00

 
Weighted-average volatility factor
42.3

%
43.2

%
43.2

%
Weighted-average expected life
8.6

yrs
6.0

yrs
6.0

yrs
Stock Option Activity
A summary of stock option and restricted stock activity is presented as follows: 
 
 
Number of
Shares
 
Weighted Average Exercise Price Per Share
 
Weighted Average Remaining Contractual Life
 
Total Intrinsic Value of Options
(in thousands)
Awards outstanding at December 27, 2015
 
775,666

 
$
8.19

 
8.7
 
$
5,246

Granted
 
50,000

 
$
17.46

 
 
 
 
Exercised
 
(103,055
)
 
$
6.91

 
 
 
 
Forfeited / Canceled
 
(44,200
)
 
$
9.94

 
 
 
 
Awards outstanding at December 25, 2016
 
678,411

 
$
8.95

 
7.8
 
$
4,511

Granted
 
128,000

 
$
16.76

 

 
 
Exercised
 
(28,800
)
 
$
7.71

 

 
 
Forfeited / Canceled
 
(12,200
)
 
$
11.00

 

 
 
Awards outstanding at December 31, 2017
 
765,411

 
$
10.27

 
7.3
 
$
4,521

Granted
 
217,000

 
$
20.73

 

 
 
Exercised
 
(163,338
)
 
$
10.47

 

 
 
Forfeited / Canceled
 
(292,088
)
 
$
6.71

 

 
 
Awards outstanding at December 30, 2018
 
526,985

 
$
16.49

 
7.7
 
$
2,932

 
 
 
 
 
 
 
 
 
Awards exercisable at December 31, 2017
 
498,611

 
$
8.74

 
6.8
 
$
3,640

Awards exercisable at December 30, 2018
 
238,085

 
$
13.96

 
7.2
 
$
1,684
Schedule of Nonvested Share Activity
 
 
Number of
Shares
 
Weighted Average Grant Date Fair Value
Non-vested outstanding at December 31, 2017
 
266,800

 
$
3.09

Non-vested outstanding at December 30, 2018
 
288,900

 
$
8.34
Valuation Assumptions For Warrants
The following assumptions were used to estimate the fair value of warrants for the years ended: 
 
 
2016
 
Weighted-average fair value of warrants
 
$
2.48

 
Weighted-average risk-free interest rate
 
0.6

%
Weighted-average dividend yield
 
$
1.00

 
Weighted-average volatility factor
 
43.2

%
Weighted-average expected life
 
3.0

yrs
Warrant Activity
A summary of warrant activity is presented as follows:
 
 
Number of
Shares
 
Weighted Average Exercise Price Per Share
 
Weighted Average Remaining Contractual Life
 
Total Intrinsic Value of Warrants
(in thousands)
Warrants outstanding at December 27, 2015
 
133,833

 
$
10.21

 
3.5
 
$
634

Granted
 
32,250

 
$
16.80

 
 
 
 
Exercised
 
(42,099
)
 
$
11.42

 
 
 
 
Expired
 
—

 
$
—

 
 
 
 
Warrants exercisable at December 25, 2016
 
123,984

 
$
11.51

 
2.8
 
$
532

Granted
 
—

 
$
—

 
 
 
 
Exercised
 
—

 
$
—

 
 
 
 
Expired
 
—

 
$
—

 
 
 
 
Warrants outstanding at December 31, 2017
 
123,984

 
$
11.51

 
2.2
 
$
577

Granted
 
—

 
$
—

 
 
 
 
Exercised
 
(30,768
)
 
$
11.27

 
 
 
 
Expired
 
—

 
$
—

 
 
 
 
Warrants outstanding at December 30, 2018
 
93,216

 
$
11.59

 
1.3
 
$
805

 
 
 
 
 
 
 
 
 
Warrants exercisable at December 31, 2017
 
123,984

 
$
11.51

 
2.2
 
$
577

Warrants exercisable at December 30, 2018
 
93,216

 
$
11.59

 
1.3
 
$
805