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SHARE-BASED COMPENSATION (Tables)
 12 Months Ended
Dec. 27, 2020
Share-based Payment Arrangement [Abstract]  
Valuation Assumptions Used For Stock Options
The following assumptions were used to estimate the fair value of stock options for the years ended: 
 2020 20192018
Weighted-average fair value of awards$4.60  $5.08  $4.68 
Weighted-average risk-free interest rate0.4 %2.3 %2.8 %
Weighted-average dividend yield$0.96 $1.18 $1.10 
Weighted-average volatility factor53.6 %42.6 %42.1 %
Weighted-average expected life10.0yrs10.0yrs10.0yrs
Stock Option Activity
A summary of stock option activity is presented as follows: 
 Number of
Shares		Weighted Average Exercise Price Per ShareWeighted Average Remaining Contractual LifeTotal Intrinsic Value of Options
(in thousands)
Awards outstanding at December 31, 2017765,411 $10.27 7.3$4,521 
Granted175,000 $25.71 
Exercised(152,838)$11.19 
Forfeited / Canceled(292,088)$6.71 
Awards outstanding at December 30, 2018495,485 $17.53 8.0$2,295 
Granted138,750 $21.49 
Exercised(39,190)$12.60 
Forfeited / Canceled(30,200)$16.53 
Awards outstanding at December 29, 2019564,845 $18.90 7.7$2,412 
Granted93,610 $10.28 
Forfeited / Canceled(5,800)$22.22 
Awards outstanding at December 27, 2020652,655 $17.63 7.1$665 
Awards exercisable at December 29, 2019313,645 $16.05 6.8$1,991 
Awards exercisable at December 27, 2020416,717 $16.96 6.3$463 
Schedule of Nonvested Share Activity
 Number of
Shares		Weighted Average Grant Date Fair Value
Non-vested outstanding at December 29, 2019251,200 $22.46 
Non-vested outstanding at December 27, 2020235,938 $18.83 
Share-based Payment Arrangement, Restricted Stock and Restricted Stock Unit, Activity
A summary of restricted stock activity is presented as follows: 
 Number of
Shares		Weighted Average Grant Date Fair Value
Restricted outstanding at December 31, 2017— $— 
Issued42,000 $28.61 
Vested(10,500)$28.61 
Restricted outstanding at December 30, 201831,500 $28.61 
Vested(9,000)$28.61 
Forfeited / Canceled(4,500)$28.61 
Restricted outstanding at December 29, 201918,000 $28.61 
Issued21,624 $9.02 
Vested(14,406)$21.26 
Restricted outstanding at December 27, 202025,218 $16.01 
Nonvested outstanding at December 29, 201918,000 $28.61 
Nonvested outstanding at December 27, 202025,218 $16.01 
Warrant Activity
A summary of warrant activity is presented as follows:
 Number of
Shares		Weighted Average Exercise Price Per ShareWeighted Average Remaining Contractual LifeTotal Intrinsic Value of Warrants
(in thousands)
Warrants outstanding at December 31, 2017123,984 $11.51 2.2$577 
Exercised(30,768)$11.27 
Warrants exercisable at December 30, 201893,216 $11.59 1.3$805 
Exercised(28,734)$6.55 
Warrants outstanding at December 29, 201964,482 $13.84 0.8$473 
Expired(38,620)$11.85 
Warrants outstanding at December 27, 202025,862 $16.80 0.4$— 
Warrants exercisable at December 29, 201964,482 $13.84 0.8$473 
Warrants exercisable at December 27, 202025,862 $16.80 0.4$—