STOCK-BASED COMPENSATION - Schedule of Activity of Equity Compensation Plans (Details) - Stock Options and Stock Appreciation Rights (SARs) shares in Thousands	6 Months Ended
	Jun. 30, 2020 $ / shares shares
Number of Shares
Outstanding, beginning (shares) | shares	76
Granted (shares) | shares	0
Exercised (shares) | shares	0
Expired or cancelled (shares) | shares	(11)
Outstanding, ending (shares) | shares	65
Exercisable (shares) | shares	65
Weighted Average Exercise Price
Outstanding, beginning (dollars per share) | $ / shares	$ 7.55
Granted (dollars per share) | $ / shares	0
Exercised (dollars per share) | $ / shares	0
Expired or cancelled (dollars per share) | $ / shares	5.45
Outstanding, ending (dollars per share) | $ / shares	7.92
Exercisable, weighted average exercise price (dollars per share) | $ / shares	$ 7.92