Goodwill and Other Intangibles - Summary of Amortizable Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2026	Sep. 30, 2025	Sep. 30, 2026	Sep. 30, 2025	Dec. 31, 2025
Intangible Asset, Goodwill and Other [Abstract]
Gross CDI Amount Balance, beginning of period	$ 213,793	$ 97,213	$ 97,213	$ 97,213
Addition due to acquisition	0	0	116,580	0
Gross CDI Amount Balance, end of period	213,793	97,213	213,793	97,213
Accumulated Amortization Balance, beginning of period	(95,866)	(89,556)	(91,439)	(87,247)
Accumulated Amortization, Amortization expense	(3,980)	(1,003)	(8,407)	(3,312)
Accumulated Amortization Balance, end of period	(99,846)	(90,559)	(99,846)	(90,559)
Net CDI, end of period	113,947	$ 6,654	113,947	$ 6,654
Estimated Amortization Expense:
2026 (remainder of 2026)	3,858		3,858
2027	14,600		14,600
2028	13,486		13,486
2029	12,972		12,972
2030	12,570		12,570
Thereafter	56,461		56,461
Total	$ 113,947		$ 113,947		$ 5,774

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Amount of amortization expense for finite-lived intangible asset expected to be recognized after fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). Excludes goodwill and capitalized cost for software to be sold, leased, or marketed.

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Amount of amortization expense for finite-lived intangible asset expected to be recognized in fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). Excludes goodwill and capitalized cost for software to be sold, leased, or marketed.

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Amount, before accumulated amortization, of finite-lived intangible asset. Excludes goodwill and capitalized cost for software to be sold, leased, or marketed.

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