Nature of Operations and Summary of Significant Accounting Policies - Impact Of Covid-19 (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Apr. 01, 2022	Dec. 31, 2021	Apr. 01, 2021
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Loans	$ 12,003,894		$ 9,241,861
PPP, CARES Act
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Loans	$ 4,700		$ 106,600
Level One
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Loans at acquisition		$ 1,627,423		$ 1,600,000
Level One | PPP, CARES Act
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Loans at acquisition				$ 43,500