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SHARE BASED COMPENSATION, 401(K) PLAN AND DEFERRED COMPENSATION - Restricted Share Activity (Details) - USD ($)
12 Months Ended
Feb. 21, 2019
Dec. 31, 2019
Restricted Performance Share Units Plan    
Shares    
Ending balance (in shares) 37,472 233,890
Weighted Average Grant Date Fair Value    
Non-vested at end of year, Weighted Average Grant Date Fair Value (in dollars per shares)   $ 15.61
Restricted Share Rights Awards    
Shares    
Beginning balance (in shares)   466,439
Granted (in shares) 196,667 278,442
Vested (in shares)   (248,607)
Forfeited (in shares)   (17,130)
Ending balance (in shares)   479,144
Weighted Average Grant Date Fair Value    
Non-vested at beginning of year, Weighted Average Grant Date Fair Value (in dollars per shares)   $ 14.93
Granted, Weighted Average Grant Date Fair Value (in dollars per shares)   15.51
Vested, Weighted Average Grant Date Fair Value (in dollars per shares)   13.68
Forfeited, Weighted Average Grant Date Fair Value (in dollars per shares)   15.66
Non-vested at end of year, Weighted Average Grant Date Fair Value (in dollars per shares)   $ 15.90
Non-vested at beginning of year, Aggregate Intrinsic Value   $ 70,700
Granted, Aggregate Intrinsic Value   65,600
Vested, Aggregate Intrinsic Value   538,300
Forfeited, Aggregate Intrinsic Value   1,600
Non-vested at end of year, Aggregate Intrinsic Value   $ 44,700
Executive Officers | Restricted Performance Share Units Plan    
Shares    
Beginning balance (in shares)   375,550
Granted (in shares)   213,728
Vested (in shares)   (8,420)
Forfeited (in shares)   (25,323)
Ending balance (in shares)   555,535
February 22, 2016 RSPU Grant | Executive Officers | Restricted Performance Share Units Plan    
Shares    
Beginning balance (in shares)   169,525
Granted (in shares)   0
Vested (in shares)   (8,420)
Forfeited (in shares)   (1,935)
Ending balance (in shares)   159,170
March 01, 2017 RSPU Grant | Executive Officers | Restricted Performance Share Units Plan    
Shares    
Beginning balance (in shares)   206,025
Granted (in shares)   0
Vested (in shares)   0
Forfeited (in shares)   (15,729)
Ending balance (in shares)   190,296
February 28, 2018 RSPU Grant | Executive Officers | Restricted Performance Share Units Plan    
Shares    
Beginning balance (in shares)   0
Granted (in shares)   213,728
Vested (in shares)   0
Forfeited (in shares)   (7,659)
Ending balance (in shares)   206,069