INVESTMENT SECURITIES - AFS (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Available-for-Sale Debt Securities
Amortized Cost	$ 473,971	$ 467,122
Gross Unrealized Gains	13,434	4,945
Gross Unrealized Losses	(432)	(712)
Allowance for credit losses	(126)	0
Available-for-sale debt securities, Fair Value	486,847	471,355
U.S. Treasury securities and U.S. Government agencies
Available-for-Sale Debt Securities
Amortized Cost	137,739	134,765
Gross Unrealized Gains	2,057	59
Gross Unrealized Losses		(184)
Available-for-sale debt securities, Fair Value	139,796	134,640
Private label mortgage backed security
Available-for-Sale Debt Securities
Amortized Cost	1,845	2,210
Gross Unrealized Gains	1,178	1,285
Available-for-sale debt securities, Fair Value	3,023	3,495
Mortgage backed securities - residential
Available-for-Sale Debt Securities
Amortized Cost	263,760	253,288
Gross Unrealized Gains	9,521	2,916
Gross Unrealized Losses		(357)
Available-for-sale debt securities, Fair Value	273,281	255,847
Collateralized mortgage obligations
Available-for-Sale Debt Securities
Amortized Cost	57,030	63,284
Gross Unrealized Gains	678	258
Gross Unrealized Losses	(110)	(171)
Available-for-sale debt securities, Fair Value	57,598	63,371
Corporate bonds
Available-for-Sale Debt Securities
Amortized Cost	10,000	10,000
Gross Unrealized Gains		2
Gross Unrealized Losses	(225)
Allowance for credit losses	(126)
Available-for-sale debt securities, Fair Value	9,649	10,002
Trust preferred security
Available-for-Sale Debt Securities
Amortized Cost	3,597	3,575
Gross Unrealized Gains		425
Gross Unrealized Losses	(97)
Available-for-sale debt securities, Fair Value	$ 3,500	$ 4,000

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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Amount, before tax, of unrealized loss 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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Amount of allowance for credit loss 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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