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SECURITIES AVAILABLE FOR SALE, HELD TO MATURITY, AND MARKETABLE EQUITY SECURITIES - Schedule of Maturity of Securities (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Available for sale, Amortized Cost
Within 1 year	$ 20,441
Over 1 year to 5 years	9,392
Over 5 years to 10 years	48,894
Over 10 years	53,593
Total bonds and obligations	132,320
Mortgage-backed securities	1,586,806
Amortized  Cost	1,719,126	$ 1,881,813
Available for sale, Fair Value
Within 1 year	20,444
Over 1 year to 5 years	9,224
Over 5 years to 10 years	46,318
Over 10 years	48,137
Total bonds and obligations	124,123
Mortgage-backed securities	1,346,826
Fair Value	1,470,949	1,877,585
Held to maturity, Amortized Cost
Within 1 year	1,711
Over 1 year to 5 years	2,326
Over 5 years to 10 years	23,841
Over 10 years	242,342
Total bonds and obligations	270,220
Mortgage-backed securities	322,283
Amortized  Cost	592,503	636,503
Held to maturity, Fair Value
Within 1 year	1,710
Over 1 year to 5 years	2,313
Over 5 years to 10 years	23,500
Over 10 years	206,413
Total bonds and obligations	233,936
Mortgage-backed securities	269,326
Fair Value	$ 503,262	$ 647,236

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+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Amount, after allowance for credit loss, of investment in debt security measured at amortized cost (held-to-maturity) with single maturity date and allocated without single maturity date, maturing in second through fifth rolling fiscal year following current statement of financial position date. For interim and annual periods when interim period is reported on rolling approach.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 5
-Subparagraph (f)(2)
-URI https://asc.fasb.org/extlink&oid=126970911&loc=d3e27232-111563

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 320
-Section 50
-Paragraph 3
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=126980459&loc=d3e62586-112803

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant