Loans and Allowance for Loan Losses - Contractually Required Payments (Details) - Purchased credit impaired loans $ in Thousands	Jun. 30, 2020 USD ($)
Financing Receivable, Impaired [Line Items]
Cash flows expected to be collected at acquisition	$ 86,823
Fair value of loans acquired at acquisition	50,235
Commercial and Non-Residential Real Estate
Financing Receivable, Impaired [Line Items]
Contractually Required Payments Receivable	36,046
Residential Real Estate
Financing Receivable, Impaired [Line Items]
Contractually Required Payments Receivable	47,787
Home Equity
Financing Receivable, Impaired [Line Items]
Contractually Required Payments Receivable	0
Consumer
Financing Receivable, Impaired [Line Items]
Contractually Required Payments Receivable	$ 2,990

Fair value at acquisition of acquired loans not accounted for as debt securities with evidence of deterioration of credit quality.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 30
-Section 15
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=121585399&loc=d3e13503-111538

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (a)(3)
-URI http://asc.fasb.org/extlink&oid=121614798&loc=d3e15032-111544

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Amount of cash flows expected to be collected at acquisition of acquired loans not accounted for as debt securities with evidence of deterioration of credit quality.

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Amount of contractually required payments receivable at acquisition of acquired loans not accounted for as debt securities with evidence of deterioration of credit quality.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (a)(3)
-URI http://asc.fasb.org/extlink&oid=121614798&loc=d3e15032-111544

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 30
-Section 15
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=121585399&loc=d3e13503-111538

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