Allowance for Credit Losses and Credit Quality of Loans, Summary (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Allowance for Credit Losses [Abstract]
Allowance for credit losses	$ 92,000	$ 110,000	$ 75,999
Percentage of allowance of credit losses	1.23%	1.47%
Retained earnings	$ 856,203	$ 749,056
Loans purchased with credit deterioration	0	0
Allowance for credit losses on loans purchased	6,800	3,600
Accrued Interest Receivable [Member]
Allowance for Credit Losses [Abstract]
Allowance for credit losses	0	600
AIR on loans	$ 19,500	23,700
Write-off of uncollectible interest period	120 days
COVID-19 [Member]
Allowance for Credit Losses [Abstract]
Loans in modification programs related to COVID-19	$ 1,400	110,800
ASU 2016-13 [Member] \| Loans [Member]
Allowance for Credit Losses [Abstract]
Allowance for credit losses		3,000
Retained earnings		(2,300)
Deferred tax asset		700
Consumer Loans [Member]
Allowance for Credit Losses [Abstract]
Allowance for credit losses	44,253	37,803	32,122
Amount of loans purchased	92,500	$ 51,900
Discount on loans purchased		1.00%
Residential [Member]
Allowance for Credit Losses [Abstract]
Allowance for credit losses	18,806	$ 21,255	$ 16,721
Amount of loans purchased	$ 58,900
Residential [Member] \| Minimum [Member]
Allowance for Credit Losses [Abstract]
Premium on loans purchased	2.00%
Residential [Member] \| Maximum [Member]
Allowance for Credit Losses [Abstract]
Premium on loans purchased	5.00%

The discount percentage on loans purchased.

No definition available.

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- Definition

The write-off period of uncollectible interest of delinquent loans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

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- Definition

Amount of financing receivables modified related to COVID-19.

+ References

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- Definition

Amount of loans purchased with credit deterioration during the period.

+ References

No definition available.

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- Definition

The premium percentage on loans purchased.

+ References

No definition available.

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- Definition

Percentage of allowance for credit loss to total financing receivable outstanding.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher SEC
-Name Regulation S-K (SK)
-Number 229
-Section 1405
-Paragraph (a)
-Subparagraph (1)

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- References

No definition available.

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- Definition

Reserve for loans impairments recorded after acquisition as a result of current information and events which result in it being probable that estimated cash flows will be less than previously expected or because actual cash flows are less than cash flows previously expected. This relates to loans not accounted for as debt securities, with evidence of deterioration of credit quality since origination that was acquired by completion of a transfer for which it is probable, at acquisition, that the investor will be unable to collect all contractually required payments receivable.

+ References

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- Definition

Amount, after allocation of valuation allowances and deferred tax liability, of deferred tax asset attributable to deductible differences and carryforwards, with jurisdictional netting.

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- Definition

Amount, after allowance for credit loss, of accrued interest on financing receivable.

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- Definition

Amount of allowance for credit loss on financing receivable. Excludes allowance for financing receivable covered under loss sharing agreement.

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- Definition

The cash outflow for the purchase of loan receivable arising from the financing of goods and services.

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- Definition

The cumulative amount of the reporting entity's undistributed earnings or deficit.

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