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SUMMARY OF NONVESTED PHANTOM STOCK UNITS (Details)
6 Months Ended
Jun. 30, 2020
$ / shares
shares
Share-based Payment Arrangement [Abstract]  
Nonvested Units, Beginning balance 15,493
Nonvested Weighted Average Grant Date Fair Value, Beginning balance | $ / shares $ 59.65
Nonvested Units, Granted 4,875
Nonvested Weighted Average Grant Date Fair Value, Granted | $ / shares $ 74.52
Nonvested Units, Vested (6,750)
Nonvested Weighted Average Grant Date Fair Value, Vested | $ / shares $ 52.38
Nonvested Units, Forfeited 0
Nonvested Weighted Average Grant Date Fair Value, Forfeited | $ / shares
Nonvested Units, Canceled 0
Nonvested Weighted Average Grant Date Fair Value, Canceled
Nonvested Units, Ending Balance 13,618
Nonvested Weighted Average Grant Date Fair Value, Ending Balance | $ / shares $ 68.58
Phantom Stock Unit Awards Expected to Vest, Units 13,618
Phantom Stock Unit Awards Expected to Vest, Weighted Average Grant Date Fair Value 68.58