STOCK-BASED COMPENSATION PLANS - Changes in Unvested Restricted Stock (Details) - RSAs	12 Months Ended
	Dec. 31, 2019 $ / shares shares
RSAs
Unvested shares at the beginning of the period (in shares) | shares	280,315
Granted (in shares) | shares	287,550
Vested (in shares) | shares	(164,423)
Forfeited (in shares) | shares	(2,000)
Unvested shares at the end of the period (in shares) | shares	401,442
Weighted-Average Price
Unvested shares at the beginning of the period (in dollars per share) | $ / shares	$ 34.73
Granted (in dollars per share) | $ / shares	33.54
Vested (in dollars per share) | $ / shares	34.59
Forfeited (in dollars per shares) | $ / shares	34.48
Unvested shares at the end of the period (in dollars per share) | $ / shares	$ 33.93