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STOCK-BASED COMPENSATION - All Equity and Liability Classified Award Activity (Details) - USD ($)
3 Months Ended 6 Months Ended
Jan. 24, 2018
Feb. 03, 2017
Jan. 25, 2017
Jan. 27, 2016
Jan. 22, 2014
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2018
Jun. 30, 2017
Shares                  
Outstanding (in shares)               169,775  
Granted (in shares)               33,157  
Vested / Exercised (in shares)               (26,633)  
Outstanding (in shares)           176,299   176,299  
Total Cost of Share-Based Plans Charged Against Income Before Tax Effect           $ 430,054 $ 389,585 $ 897,325 $ 743,164
Income Tax Expense Recognized in Income           $ (108,997) $ (150,283) $ (227,427) $ (286,676)
Stock Option Awards                  
Shares                  
Outstanding (in shares)               0  
Peer Group Market Condition Vesting | Performance Shares                  
Shares                  
Outstanding (in shares)               12,635  
Granted (in shares) 15,445 12,635           15,445  
Outstanding (in shares)           28,080   28,080  
Stock Price Vesting | Restricted Shares                  
Shares                  
Outstanding (in shares)               29,750  
Exercised (in shares)               (7,750)  
Outstanding (in shares)           22,000   22,000  
Three-Year Vesting | Restricted Shares                  
Shares                  
Outstanding (in shares)               37,390  
Granted (in shares) 17,712   17,451 21,100 14,500     17,712  
Vested (in shares)               (18,883)  
Outstanding (in shares)           36,219   36,219  
Shares                  
Outstanding (in shares)               37,390  
Granted (in shares)               17,712  
Exercised (in shares)               (18,883)  
Outstanding (in shares)           36,219   36,219  
Amended and Restated 2010 Equity Incentive Plan | Stock Option Awards                  
Shares                  
Outstanding (in shares)               90,000  
Granted (in shares)               0  
Exercised (in shares)               0  
Outstanding (in shares)           90,000   90,000  
Shares                  
Outstanding (in shares)               90,000  
Outstanding (in shares)           90,000   90,000