Benefit Plans - Narrative (Details) - USD ($)		1 Months Ended	12 Months Ended
	May 23, 2022	May 31, 2012	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Defined Benefit Plan Disclosure [Line Items]
Employer's match of employees' contributions of the first 3% of eligible compensation (as a percent)			100.00%	100.00%	100.00%
Percentage of eligible compensation, matched 100% by employer			3.00%	3.00%	3.00%
Employer's match of employees' contributions of the next 2% of eligible compensation (as a percent)			50.00%	50.00%	50.00%
Percentage of eligible compensation, matched 50% by employer			2.00%	2.00%	2.00%
Contributions made			$ 5,100,000	$ 4,900,000	$ 4,100,000
Intrinsic value			2,400,000	2,400,000	1,700,000
Deferred Compensation Arrangement with Individual, by Type of Compensation, Pension and Other Postretirement Benefits | Supplemental Employee Retirement Plan
Defined Benefit Plan Disclosure [Line Items]
Amounts recorded as liability			10,900,000	11,700,000
Deferred Compensation Arrangement with Individual, by Type of Compensation, Pension and Other Postretirement Benefits | Supplemental Employee Retirement Plan | Plaza Bancorp
Defined Benefit Plan Disclosure [Line Items]
Deferred compensation liability			1,300,000	1,700,000
Executive Officer | Deferred Compensation Arrangement with Individual, by Type of Compensation, Pension and Other Postretirement Benefits | Supplemental Employee Retirement Plan
Defined Benefit Plan Disclosure [Line Items]
Amounts expensed			485,000	503,000	511,000
Amounts recorded as liability			$ 9,600,000	$ 10,000,000
Stock option
Defined Benefit Plan Disclosure [Line Items]
Number of options outstanding (in shares)			159,751	213,077
Compensation expense			$ 0	$ 0	8,000
Unrecognized compensation expense			0
Restricted Stock
Defined Benefit Plan Disclosure [Line Items]
Compensation expense			18,900,000	$ 13,300,000	$ 10,800,000
Unrecognized compensation expense			38,600,000
Grant date fair value			$ 31,000,000
Weighted-average period of recognition			2 years 8 months 23 days
2012 Plan
Defined Benefit Plan Disclosure [Line Items]
Number of shares authorized (in shares)	2,000,000
Number of options outstanding (in shares)			149,818
Shares reserved for future issuance (in shares)			2,864,547
2015 Equity Based Compensation Plan
Defined Benefit Plan Disclosure [Line Items]
Number of options outstanding (in shares)			5,344
Shares reserved for future issuance (in shares)			0
2005 Long-Term Incentive Plan
Defined Benefit Plan Disclosure [Line Items]
Number of options outstanding (in shares)			4,589
Shares reserved for future issuance (in shares)			0
Long Term Incentive Plan 2022
Defined Benefit Plan Disclosure [Line Items]
Number of shares authorized (in shares)	7,000,000
Maximum shares per person in a calendar year (in shares)	400,000
Award vesting period (in years)	10 years
Number of shares available for grant (in shares)			2,900,000
Long Term Incentive Plan 2022 | Non-employee Directors
Defined Benefit Plan Disclosure [Line Items]
Maximum shares per person in a calendar year (in shares)	30,000
Minimum
Defined Benefit Plan Disclosure [Line Items]
Employee contribution, as a percentage of compensation			1.00%
Minimum | 2012 Plan
Defined Benefit Plan Disclosure [Line Items]
Award vesting period (in years)		1 year
Maximum
Defined Benefit Plan Disclosure [Line Items]
Employee contribution, as a percentage of compensation			99.00%
Maximum | 2012 Plan
Defined Benefit Plan Disclosure [Line Items]
Award vesting period (in years)		5 years