Loans and Leases Held for Investment and Credit Quality - Aging Analysis Of Loans That Were Modified (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
Financing Receivable Modifications [Line Items]
Total	$ 43,227	$ 12,103
Total Past Due
Financing Receivable Modifications [Line Items]
Total	3,677	2,243
Current
Financing Receivable Modifications [Line Items]
Total	123,468	35,220
30-89 Days Past Due
Financing Receivable Modifications [Line Items]
Total	3,287	0
90 Days or More Past Due
Financing Receivable Modifications [Line Items]
Total	390	2,243
Small Business Banking
Financing Receivable Modifications [Line Items]
Total	42,489	12,103
Small Business Banking \| Total Past Due
Financing Receivable Modifications [Line Items]
Total	3,677	2,243
Small Business Banking \| Current
Financing Receivable Modifications [Line Items]
Total	117,347	17,644
Small Business Banking \| 30-89 Days Past Due
Financing Receivable Modifications [Line Items]
Total	3,287	0
Small Business Banking \| 90 Days or More Past Due
Financing Receivable Modifications [Line Items]
Total	390	2,243
Commercial Banking
Financing Receivable Modifications [Line Items]
Total	738
Commercial Banking \| Total Past Due
Financing Receivable Modifications [Line Items]
Total	0	0
Commercial Banking \| Current
Financing Receivable Modifications [Line Items]
Total	6,121	17,576
Commercial Banking \| 30-89 Days Past Due
Financing Receivable Modifications [Line Items]
Total	0	0
Commercial Banking \| 90 Days or More Past Due
Financing Receivable Modifications [Line Items]
Total	$ 0	$ 0