SECURITIES - Summary of amortized cost of securities held to maturity and their estimated fair value (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	$ 23,281	$ 7,005
Gross Unrecognized Gains	0	0
Gross Unrecognized Losses	(432)	(26)
Estimated Fair Value	22,849	6,979
Collateralized loan obligation
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost		7,005
Gross Unrecognized Gains		0
Gross Unrecognized Losses		(26)
Estimated Fair Value		$ 6,979
Asset-backed securities
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	15,281
Gross Unrecognized Gains	0
Gross Unrecognized Losses	(373)
Estimated Fair Value	14,908
Corporate Bonds
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	8,000
Gross Unrecognized Gains	0
Gross Unrecognized Losses	(59)
Estimated Fair Value	$ 7,941

Amount, after allowance for credit loss, of investment in debt security measured at amortized cost (held-to-maturity).

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 5
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=123581744&loc=d3e27232-111563

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(6))
-URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 45
-Paragraph 1
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-URI http://asc.fasb.org/extlink&oid=124260329&loc=d3e26610-111562

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
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-Section 50
-Paragraph 5
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-URI http://asc.fasb.org/extlink&oid=123581744&loc=d3e27232-111563

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Amount of accumulated unrecognized gain on investment in debt security measured at amortized cost (held-to-maturity).

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Amount of accumulated unrealized loss on investment in debt security measured at amortized cost (held-to-maturity).

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Fair value of investment in debt security measured at amortized cost (held-to-maturity).

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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
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-URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878

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