STOCK-BASED COMPENSATION PLANS - Summary of Total Unrecognized Compensation Costs Related to Unvested Stock-Based Compensation (Details) $ in Thousands	12 Months Ended
Dec. 31, 2019 USD ($)
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Unrecognized compensation	$ 3,565
Weighted-average remaining recognition period (in years)	1 year 7 months 17 days
Stock options
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Unrecognized compensation	$ 3
Weighted-average remaining recognition period (in years)	1 month 21 days
Restricted stock
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Unrecognized compensation	$ 3,562
Weighted-average remaining recognition period (in years)	1 year 5 months 27 days

Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (i)
-URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901

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