INVESTMENT SECURITIES - AFS (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Available-for-Sale Debt Securities
Amortized Cost	$ 567,691	$ 477,115
Gross Unrealized Gains	5,036	3,623
Gross Unrealized Losses	(712)	(5,000)
Fair Value	572,015	475,738
U.S. Treasury securities and U.S. Government agencies
Available-for-Sale Debt Securities
Amortized Cost	257,468	218,502
Gross Unrealized Gains	78	25
Gross Unrealized Losses	(244)	(1,654)
Fair Value	257,302	216,873
Private label mortgage backed security
Available-for-Sale Debt Securities
Amortized Cost	2,289	2,348
Gross Unrealized Gains	1,306	1,364
Fair Value	3,595	3,712
Mortgage backed securities - residential
Available-for-Sale Debt Securities
Amortized Cost	227,929	168,992
Gross Unrealized Gains	2,935	1,470
Gross Unrealized Losses	(170)	(1,253)
Fair Value	230,694	169,209
Collateralized mortgage obligations
Available-for-Sale Debt Securities
Amortized Cost	66,441	73,740
Gross Unrealized Gains	281	222
Gross Unrealized Losses	(142)	(1,151)
Fair Value	66,580	72,811
Corporate bonds
Available-for-Sale Debt Securities
Amortized Cost	10,000	10,000
Gross Unrealized Losses	(156)	(942)
Fair Value	9,844	9,058
Trust preferred security
Available-for-Sale Debt Securities
Amortized Cost	3,564	3,533
Gross Unrealized Gains	436	542
Fair Value	$ 4,000	$ 4,075

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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