Goodwill and Other Intangible Assets - Estimated Amortization Expense of Finite-Lived Intangible Assets (Details) $ in Thousands	Jun. 30, 2021 USD ($)
Finite-Lived Intangible Assets [Line Items]
2021	$ 6,041
2022	5,121
2023	4,225
2024	3,679
2025	3,284
Core Deposit Intangibles
Finite-Lived Intangible Assets [Line Items]
2021	5,860
2022	4,940
2023	4,044
2024	3,498
2025	3,103
Customer relationship intangible
Finite-Lived Intangible Assets [Line Items]
2021	181
2022	181
2023	181
2024	181
2025	$ 181

Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (a)(3)
-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275

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Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in remainder of current fiscal year.

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Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in second fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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