Loans and Allowance - Allowance for Credit Losses and Loan Portfolio by Loan Segment (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Allowance Balances:
Individually evaluated for impairment		$ 12,901
Collectively evaluated for impairment		117,747
Total Allowance for Loan Losses		130,648
Loan Balances:
Individually evaluated for impairment	$ 57,134	56,156
Collectively evaluated for impairment		9,180,857
Financing Receivable, Evaluated for Impairment		9,243,174
Loans acquired with deteriorated credit quality
Loan Balances:
Financing Receivable, Evaluated for Impairment		6,161
Commercial
Allowance Balances:
Individually evaluated for impairment		223
Collectively evaluated for impairment		46,892
Total Allowance for Loan Losses		47,115
Loan Balances:
Individually evaluated for impairment		1,258
Collectively evaluated for impairment		3,505,863
Financing Receivable, Evaluated for Impairment		3,507,698
Commercial \| Loans acquired with deteriorated credit quality
Loan Balances:
Financing Receivable, Evaluated for Impairment		577
Commercial Real Estate
Allowance Balances:
Individually evaluated for impairment		12,246
Collectively evaluated for impairment		38,824
Total Allowance for Loan Losses		51,070
Loan Balances:
Individually evaluated for impairment		51,605
Collectively evaluated for impairment		3,805,808
Financing Receivable, Evaluated for Impairment		3,862,997
Commercial Real Estate \| Loans acquired with deteriorated credit quality
Loan Balances:
Financing Receivable, Evaluated for Impairment		5,584
Consumer
Allowance Balances:
Individually evaluated for impairment		0
Collectively evaluated for impairment		9,648
Total Allowance for Loan Losses		9,648
Loan Balances:
Individually evaluated for impairment	1	2
Collectively evaluated for impairment		129,477
Financing Receivable, Evaluated for Impairment		129,479
Residential
Allowance Balances:
Individually evaluated for impairment		432
Collectively evaluated for impairment		22,383
Total Allowance for Loan Losses		22,815
Loan Balances:
Individually evaluated for impairment	2,981	3,291
Collectively evaluated for impairment		1,739,709
Financing Receivable, Evaluated for Impairment		1,743,000
Residential \| Loans acquired with deteriorated credit quality
Loan Balances:
Financing Receivable, Evaluated for Impairment		$ 0
Home equity
Loan Balances:
Individually evaluated for impairment	$ 408

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The valuation allowance for financing receivables that are expected to be uncollectible that were collectively evaluated for impairment.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
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Amount of valuation allowance for financing receivables that are expected to be uncollectible that were individually evaluated for impairment.

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