STOCK COMPENSATION - Stock Compensation Expense (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Stock compensation expense	$ 1,328	$ 1,420	$ 2,772	$ 2,746
Equity based stock option expense
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Stock compensation expense	102	139	226	285
Restricted and performance-based stock awards expense
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Stock compensation expense	1,221	1,276	2,536	2,450
Equity based awards
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Stock compensation expense	1,323	1,415	2,762	2,735
Liability based stock option expense
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Stock compensation expense	$ 5	$ 5	$ 10	$ 11