Business Combinations - Merger-Related Expenses (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Business Acquisition, Pro Forma Information, Nonrecurring Adjustment [Line Items]
Salaries and employee benefits	$ 94,283	$ 82,679	$ 264,151	$ 243,632
Data processing and software	15,807	14,335	44,807	41,828
Net occupancy	14,025	12,957	42,134	39,433
Other outside services	9,361	7,889	26,292	24,557
Professional fees	2,373	2,271	6,178	7,701
Marketing	1,859	1,448	4,505	3,798
Other	13,865	11,730	37,813	38,060
Merger-related expenses	7,006	$ 0	8,434	$ 0
Acquisition-related Costs \| Prudential
Business Acquisition, Pro Forma Information, Nonrecurring Adjustment [Line Items]
Salaries and employee benefits	487		487
Data processing and software	1,113		1,114
Net occupancy	1,552		1,554
Other outside services	216		221
Professional fees	1,250		2,444
Marketing	88		88
Charitable donation	2,000		2,000
Other	300		526
Merger-related expenses	$ 7,006		$ 8,434

Includes consulting services, employment agency fees and other contracted third-party services.

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This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities.

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The amount of expenses incurred in the period for information technology and data processing products and services.

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Amount of expense for salary, wage, profit sharing; incentive and equity-based compensation; and other employee benefit.

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Expenditures for planning and executing the conception, pricing, promotion, and distribution of ideas, goods, and services. Costs of public relations and corporate promotions are typically considered to be marketing costs.

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Noncash charitable contributions made by the entity during the period.

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Amount of noninterest expense classified as other.

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A fee charged for services from professionals such as doctors, lawyers and accountants. The term is often expanded to include other professions, for example, pharmacists charging to maintain a medicinal profile of a client or customer.

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