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LOANS AND ALLOWANCE FOR CREDIT LOSSES - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
Financing Receivable, Allowance for Credit Loss [Line Items]
Net loans	$ 7,847,468		$ 7,847,468		$ 6,719,753
Commercial loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, reclassification, held for sale	3,600	$ 0	3,600	$ 11,700
Commercial and industrial
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, nonaccrual, medallion loans, fair value	800		800		1,200
Financing receivable, nonaccrual, medallion loans, contractual balance	13,400		13,400		31,400
Small Business Administration (SBA), CARES Act, Paycheck Protection Program
Financing Receivable, Allowance for Credit Loss [Line Items]
Net loans	$ 10,300		$ 10,300		$ 29,900

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- Definition

Amortized cost excluding accrued interest, after allowance for credit loss, of financing receivable. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 45
-Paragraph 1
-URI https://asc.fasb.org/extlink&oid=124255206&loc=SL82895884-210446

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Amount of financing receivable reclassified to held-for-sale.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 50
-Paragraph 11
-Subparagraph (i)
-URI https://asc.fasb.org/extlink&oid=124255953&loc=SL82919244-210447

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