Loans Receivable, Net - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans receivable, net	$ 15,064,529	$ 13,259,366
Percentage of consolidated stockholders equity exceeding which no borrower had outstanding loans or commitments	10.00%
Notes receivable, related parties	$ 101,637	125,034
Origination of notes receivable from related parties	21,710
Repayment of notes receivable from related parties	9,919
Decrease in notes receivable from related parties due to change in related parties	35,188
Provision for credit losses	17,433	16,380	$ 37,637
Nonaccrual interest income reversed	1,175	660	832
TDR with pre modification loan balance for which oreo was received	1,253	1,628	2,278
Consumer mortgage loans secured by residential real estate properties for which formal foreclosure proceedings are in process	270	102
OREO Secured by Residential Real Estate	0	0
Additional unfunded commitments on TDRs	437	1,054
Charge-offs on TDRs	0	0	453
Asset Pledged as Collateral
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans receivable, net	$ 10,520,643
State Bank of Arizona
Financing Receivable, Allowance for Credit Losses [Line Items]
Provision for credit losses			4,794
PCD loans acquired			3,401
ACL on PCD loans acquired			49
Discount (premium) on PCD loans			$ 13
Altabank
Financing Receivable, Allowance for Credit Losses [Line Items]
Provision for credit losses		18,056
PCD loans acquired		58,576
ACL on PCD loans acquired		371
Discount (premium) on PCD loans		$ (840)

Additional outstanding commitments on TDRs.

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Amount of interest income reversed on financing receivable that went on nonaccrual status during the period.

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Increase (Decrease) In Notes Receivable From Related Parties, Due To Change In Classification As Related Party

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Percentage of consolidated stockholders equity exceeding which no borrower had outstanding loans or commitments.

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Real Estate Acquired Through Foreclosure, Secured By Residential Real Estate

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TDR with pre modification loan balance, for which OREO was received.

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

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Amount of allowance for credit loss at acquisition date of financing receivable purchased with credit deterioration.

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Amount at par value of financing receivable purchased with credit deterioration.

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Amount of discount (premium) attributable to other factors on financing receivable purchased with credit deterioration.

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Reflects the amount of the write-down related to a troubled debt restructuring.

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Recorded investment of consumer mortgage loan receivables secured by residential real estate properties for which formal foreclosure proceedings are in process.

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For an unclassified balance sheet, amounts due from parties associated with the reporting entity as evidenced by a written promise to pay.

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The cash outflow for a loan, supported by a promissory note, granted to related parties where one party can exercise control or significant influence over another party; including affiliates, owners or officers and their immediate families, pension trusts, and so forth.

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Amount of credit loss expense (reversal of expense) for financing receivable.

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The cash inflow from a loan, supported by a promissory note, granted to related parties where one party can exercise control or significant influence over another party; including affiliates, owners or officers and their immediate families, pension trusts, and so forth.

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