EARNINGS PER COMMON SHARE - Anti-dilutive Securities (Details) - shares	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
EARNINGS PER COMMON SHARE
Total potentially dilutive securities	691,590	546,093
Stock Options
EARNINGS PER COMMON SHARE
Total potentially dilutive securities	433,572	339,199
Convertible Preferred D Shares
EARNINGS PER COMMON SHARE
Total potentially dilutive securities		75,850
Time Vesting Units
EARNINGS PER COMMON SHARE
Total potentially dilutive securities	144,560	88,333
Financial Performance Units
EARNINGS PER COMMON SHARE
Total potentially dilutive securities	35,256	8,069
Restricted Stock Awards
EARNINGS PER COMMON SHARE
Total potentially dilutive securities	78,202	34,642