STOCK-BASED COMPENSATION PLANS - Narrative (Details) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise of stock options			$ 607	$ 69
Total compensation cost	$ 600	$ 1,500	3,500	3,500
Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise of stock options		$ 55	$ 607	$ 69
Non-Vested Stock Awards Outstanding
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock awards vested (in shares)	37	3	133	130

Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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