SECURITIES AVAILABLE FOR SALE - Summary of Securities Available for Sale (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Investment Holdings [Line Items]
Amortized Cost	$ 615,696	$ 571,977
Gross Unrealized Gains	7,415	14,637
Gross Unrealized Losses	(4,835)	(1,568)
Fair Value	618,276	585,046
US Government-sponsored enterprises
Investment Holdings [Line Items]
Amortized Cost	237,283	206,834
Gross Unrealized Gains	2,289	6,018
Gross Unrealized Losses	(3,455)	(462)
Fair Value	236,117	212,390
US Government agency
Investment Holdings [Line Items]
Amortized Cost	79,143	82,878
Gross Unrealized Gains	1,016	2,870
Gross Unrealized Losses	(522)	(116)
Fair Value	79,637	85,632
Private label
Investment Holdings [Line Items]
Amortized Cost	68,691	19,810
Gross Unrealized Gains	142	40
Gross Unrealized Losses	(138)	(141)
Fair Value	68,695	19,709
Obligations of states and political subdivisions thereof
Investment Holdings [Line Items]
Amortized Cost	140,585	164,766
Gross Unrealized Gains	1,489	4,244
Gross Unrealized Losses	(298)	(6)
Fair Value	141,776	169,004
Corporate bonds
Investment Holdings [Line Items]
Amortized Cost	89,994	97,689
Gross Unrealized Gains	2,479	1,465
Gross Unrealized Losses	(422)	(843)
Fair Value	$ 92,051	$ 98,311

Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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