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STOCK-BASED COMPENSATION - Other Information (Details) - Restricted Stock - USD ($)	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Stock-based compensation
Unrecognized compensation cost related to non-vested restricted shares	$ 9,557,000
Unrecognized compensation cost related to non-vested restricted shares recognized period	4 years
Tax benefits for compensation tax deductions in excess of compensation expense	$ 285,000	$ 287,000

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Amount of tax benefit for recognition of expense of award under share-based payment arrangement.

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