EARNINGS PER COMMON SHARE - Anti-dilutive Securities (Details) - shares	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
EARNINGS (LOSS) PER COMMON SHARE
Total potentially dilutive securities	719,654	366,900
Stock Options
EARNINGS (LOSS) PER COMMON SHARE
Total potentially dilutive securities	449,797	215,200
Convertible Preferred D Shares
EARNINGS (LOSS) PER COMMON SHARE
Total potentially dilutive securities		151,700
Time Vesting Units
EARNINGS (LOSS) PER COMMON SHARE
Total potentially dilutive securities	159,991
Financial Performance Units
EARNINGS (LOSS) PER COMMON SHARE
Total potentially dilutive securities	15,130
Restricted Stock Awards
EARNINGS (LOSS) PER COMMON SHARE
Total potentially dilutive securities	94,736