STOCK-BASED COMPENSATION EXPENSE - Disclosure of Share-based Compensation Arrangements by Share-based Payment Award (Details) - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	$ 299
Shares vested in period (in shares)	103
Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	$ 17	$ 141
Shares vested in period (in shares)	0
RSUs Issued in Lieu of Retainer Fees
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	$ 80
Shares vested in period (in shares)	0
Annual RSU Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	$ 7
Shares vested in period (in shares)	3
Executive Compensation
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	$ 195
Shares vested in period (in shares)	100