STOCK-BASED COMPENSATION - Stock option activity (Details) - shares		9 Months Ended
	Sep. 08, 2020	Sep. 30, 2020	Sep. 30, 2019
Nikhil Lalwani [Member]
Option Shares
Granted (in shares)	179,643
Options [Member]
Option Shares
Outstanding at the beginning of the period (in shares)		757,000	759,000
Granted (in shares)		42,000	160,000
Exercised (in shares)		(8,000)	(117,000)
Forfeited (in shares)		(44,000)	(24,000)
Expired (in shares)			(1,000)
Outstanding at the end of the period (in shares)		747,000	777,000
Inducement Grants [Member]
Option Shares
Granted (in shares)		180,000
Outstanding at the end of the period (in shares)		180,000