SECURITIES - Summary of Available For Sale Securities (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Information related to available for sale securities
Amortized Cost	$ 610,325	$ 591,009
Gross Unrealized Gain	33,926	17,841
Gross Unrealized Losses	(217)	(617)
Fair Value	644,034	608,233
U.S. government sponsored agencies
Information related to available for sale securities
Amortized Cost	10,000
Gross Unrealized Gain	26
Gross Unrealized Losses	0
Fair Value	10,026
Mortgage-backed securities residential [Member]
Information related to available for sale securities
Amortized Cost	238,062	283,817
Gross Unrealized Gain	10,232	4,751
Gross Unrealized Losses	(28)	(387)
Fair Value	248,266	288,181
Mortgage-backed securities commercial [Member]
Information related to available for sale securities
Amortized Cost	38,026	36,712
Gross Unrealized Gain	1,135	262
Gross Unrealized Losses	0	(2)
Fair Value	39,161	36,972
State and Municipal Securities [Member]
Information related to available for sale securities
Amortized Cost	324,237	270,480
Gross Unrealized Gain	22,533	12,828
Gross Unrealized Losses	(189)	(228)
Fair Value	$ 346,581	$ 283,080

Amount before tax of increase (decrease) in accumulated equity from transactions and other events and circumstances from non-owner sources, including portion attributable to noncontrolling interest. Excludes net income (loss), and accumulated changes in equity from transactions resulting from investments by owners (distributions to owners).

No definition available.

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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).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
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Amount before tax of unrealized loss in accumulated other comprehensive income (AOCI) on investments in debt and equity securities classified as available-for-sale.

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

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
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