Summary of Significant Accounting Policies - Narrative (Details)	12 Months Ended
	Dec. 31, 2022 USD ($) subsidiary entity reporting_unit
Summary of Significant Accounting Policies [Line Items]
Number of wholly owned subsidiaries | subsidiary	5
Number of entities non-banking activities | entity	6
Prior period reclassification adjustment | $	$ 0
Period for satisfactory payment of TDRs	6 months
Threshold for evaluation for expected credit loss of commercial loans | $	$ 1,000,000
Number of reporting units | reporting_unit	1
Number of wholly owned trust subsidiaries | subsidiary	3
Minimum | Core Deposits And Customers Lists
Summary of Significant Accounting Policies [Line Items]
Weighted average estimated useful of acquired intangibles	10 years
Maximum
Summary of Significant Accounting Policies [Line Items]
Amortization period of investments in joint ventures	10 years
Maximum | Core Deposits And Customers Lists
Summary of Significant Accounting Policies [Line Items]
Weighted average estimated useful of acquired intangibles	20 years
Corporate Joint Venture | Common Wealth Trust Life Insurance Company | CTCLIC
Summary of Significant Accounting Policies [Line Items]
Percentage of outstanding common stock of investees accounted for using equity method of accounting	50.00%
Interest rate lock commitments
Summary of Significant Accounting Policies [Line Items]
Period for interest rate lock commitment	60 days