Consolidated Balance Sheets (Parenthetical) - USD ($)	Mar. 31, 2022	Dec. 31, 2021
Investment securities:
Debt Securities, Held-to-maturity, Allowance for Credit Loss	$ 1,600,000	$ 0
Estimated fair value	$ 3,029,100,000	$ 1,667,500,000
Stockholders' equity:
Preferred Stock, Par or Stated Value Per Share	$ 0	$ 0
Nonvoting, noncumulative preferred stock, shares authorized (in shares)	100,000,000	100,000,000
Nonvoting, noncumulative preferred stock, shares issued (in shares)	0	0
Nonvoting, noncumulative preferred stock, shares outstanding (in shares)	0	0
Common Stock, Shares, Issued		62,200,456
Common Stock, Shares Authorized		150,000,000
Common Stock, Par or Stated Value Per Share	$ 0	$ 0
Preferred Stock, Shares Outstanding	0	0
Shares outstanding (in shares)	109,503,010	62,200,456
Common Stock, Shares, Issued		62,200,456
Class A Common Stock
Stockholders' equity:
Shares outstanding (in shares)		41,699,409