Summary of Significant Accounting Policies - Goodwill and Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2024	Mar. 31, 2024	Dec. 31, 2023
Goodwill
Goodwill, beginning of period	$ 411,401	$ 305,125	$ 304,750
Additions	812	106,276	375
Goodwill, end of period	412,213	411,401	305,125
Core Deposit and Other Intangibles
Intangible assets, beginning of period	42,138	5,978	5,869
Additions	1,102	37,462	375
Amortization	(3,198)	(1,302)	(266)
Intangible assets, end of period	40,042	42,138	5,978
Total
Goodwill and intangible assets, beginning of period	453,539	311,103	310,619
Additions	1,914	143,738	750
Amortization	(3,198)	(1,302)	(266)
Goodwill and intangible assets, end of period	$ 452,255	$ 453,539	$ 311,103