EARNINGS PER COMMON SHARE - Anti-dilutive Securities (Details) - shares	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
EARNINGS (LOSS) PER COMMON SHARE
Total potentially dilutive securities	806,309	359,400	762,982	363,150
Stock Options
EARNINGS (LOSS) PER COMMON SHARE
Total potentially dilutive securities	442,097	207,700	445,947	211,450
Convertible Preferred D Shares
EARNINGS (LOSS) PER COMMON SHARE
Total potentially dilutive securities		151,700		151,700
Time Vesting Units
EARNINGS (LOSS) PER COMMON SHARE
Total potentially dilutive securities	198,611		179,301
Financial Performance Units
EARNINGS (LOSS) PER COMMON SHARE
Total potentially dilutive securities	70,865		42,998
Restricted Stock Awards
EARNINGS (LOSS) PER COMMON SHARE
Total potentially dilutive securities	94,736		94,736