Business Combinations - Narrative (Details) $ in Thousands, shares in Millions	3 Months Ended
	Mar. 31, 2024 USD ($) office shares	Mar. 31, 2023 USD ($)	Jun. 30, 2024	Apr. 11, 2024	Dec. 31, 2023 USD ($)
Business Acquisition [Line Items]
Total assets	$ 14,130,918				$ 14,210,810
Total loans	10,736,278				$ 10,766,501
Merger-related expenses	2,202	$ 1,100
Lakeland Bancorp, Inc. - Merger Agreement
Business Acquisition [Line Items]
Total assets	11,000,000
Total loans	8,300,000
Total deposits	$ 8,500,000
Number of full-service banking offices | office	67
Lakeland Bancorp, Inc. - Merger Agreement
Business Acquisition [Line Items]
Tier 2 subordinated debt	$ 200,000
Banking regulation period	3 years
Total common stock issued (in shares) | shares	55
Lakeland Bancorp, Inc. - Merger Agreement | Forecast
Business Acquisition [Line Items]
Leverage capital ratio			0.085
Total risk based capital ratio			0.1125
Exchange conversion ratio				0.8319
Lakeland Bancorp, Inc. - Merger Agreement | Forecast | Provident Shareholders
Business Acquisition [Line Items]
Business acquisition, interest acquired			58.00%
Lakeland Bancorp, Inc. - Merger Agreement | Forecast | Lakeland Shareholders
Business Acquisition [Line Items]
Business acquisition, interest acquired			42.00%