Loans and Leases Held for Investment, Net of Allowance For Loan and Lease Losses - PCD Loans Acquired (Details) - USD ($) $ in Thousands		3 Months Ended	9 Months Ended
Feb. 01, 2021	Sep. 30, 2021	Sep. 30, 2021
Loans and Leases Receivable Disclosure [Abstract]
Purchase price			$ 337,118
Allowance for expected credit losses			30,378
Discount attributable to other factors			12,204
Par value			379,700
Charge-offs, gross		$ 4,336	4,582
Recoveries	$ 12,400	$ 858	$ 1,216

Amount, after recovery, of writeoff of financing receivable, charged against allowance for credit loss.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
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-Publisher SEC
-Name Regulation S-K (SK)
-Number 229
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Amount of writeoff of financing receivable, charged against allowance for credit loss.

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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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