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STOCK-BASED COMPENSATION - Performance Share Awards – Peer Group Market Condition Vesting (Details) - Peer Group Market Condition Vesting - USD ($)
$ / shares in Units, $ in Millions
3 Months Ended
Jan. 23, 2019
Jan. 24, 2018
Aug. 04, 2017
Feb. 03, 2017
Mar. 31, 2019
Equity Award Agreements          
Award agreements          
Period after change of control for equity award to fully vest upon termination of employment without cause or resignation     24 months    
Performance Shares          
Stock-based compensation          
Performance period 3 years 3 years   3 years  
Shares          
Outstanding (in shares)         28,080
Granted (in shares) 21,195 15,445   12,635 21,195
Outstanding (in shares)         49,275
Weighted Average Fair Value          
Outstanding (in dollars per share)         $ 66.29
Granted (in dollars per share         64.66
Outstanding (in dollars per share)         $ 65.59
Compensation cost          
Unrecognized compensation cost         $ 2.1
Weighted average period of recognition of unrecognized compensation cost         2 years 3 months 18 days
Performance Shares | Minimum          
Stock-based compensation          
Vesting percentage 0.00% 0.00%   0.00%  
Performance Shares | Maximum          
Stock-based compensation          
Vesting percentage 150.00% 150.00%   150.00%