STOCK-BASED COMPENSATION - Weighted Average Grant Date Fair Value and Intrinsic Value of Options Exercised (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
Mar. 31, 2020	Mar. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted-average grant-date fair value of service-based restricted stock awards granted	$ 19.58	$ 15.11
Employee Stock Option, Serviced-Based
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Intrinsic value of options exercised (in thousands)	$ 113	$ 1,342

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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