Loans and Allowance for Credit Losses (Aging of Past Due Financing Receivables) (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Financing Receivable, Past Due [Line Items]
Loans	$ 4,617,719	$ 2,556,107
Non-accrual Current Loans	$ 5,606	$ 1,908
Percent of total loans, nonaccrual	0.10%	0.10%
Percent of total loans, total loans	100.00%	100.00%
Loans, at fair value	$ 9,302	$ 8,437
Financial Asset Acquired with Credit Deterioration
Financing Receivable, Past Due [Line Items]
Loans		$ 26,642
Percent of total loans, total loans		1.00%
Current
Financing Receivable, Past Due [Line Items]
Loans	$ 4,598,092	$ 2,512,635
Percent of total loans, Current		98.30%
Percent of total loans, accrual	0.996
Total past due
Financing Receivable, Past Due [Line Items]
Loans	$ 14,021	$ 14,922
Percent of total loans, total past due	0.30%	0.60%
30‑59 days past due
Financing Receivable, Past Due [Line Items]
Loans	$ 5,613	$ 11,164
Percent of total loans, total past due	0.10%	0.40%
60‑89 days past due
Financing Receivable, Past Due [Line Items]
Loans	$ 3,480	$ 1,917
Percent of total loans, total past due	0.10%	0.10%
90 days past due and still accruing
Financing Receivable, Past Due [Line Items]
Loans	$ 2,149
Percent of total loans, total past due	0.00%
90 days past due and not accruing
Financing Receivable, Past Due [Line Items]
Loans	$ 2,779	$ 1,841
Percent of total loans, total past due	0.00%	0.10%
Construction
Financing Receivable, Past Due [Line Items]
Loans	$ 328,750	$ 246,319
Non-accrual Current Loans	0	297
Construction | Financial Asset Acquired with Credit Deterioration
Financing Receivable, Past Due [Line Items]
Loans		650
Construction | Current
Financing Receivable, Past Due [Line Items]
Loans	327,503	239,990
Construction | Total past due
Financing Receivable, Past Due [Line Items]
Loans	1,247	5,382
Construction | 30‑59 days past due
Financing Receivable, Past Due [Line Items]
Loans	1,035	4,343
Construction | 60‑89 days past due
Financing Receivable, Past Due [Line Items]
Loans	0	1,015
Construction | 90 days past due and still accruing
Financing Receivable, Past Due [Line Items]
Loans	65
Construction | 90 days past due and not accruing
Financing Receivable, Past Due [Line Items]
Loans	147	24
Residential real estate
Financing Receivable, Past Due [Line Items]
Loans	1,439,464	810,497
Non-accrual Current Loans	1,644	1,259
Residential real estate | Financial Asset Acquired with Credit Deterioration
Financing Receivable, Past Due [Line Items]
Loans		13,956
Residential real estate | Current
Financing Receivable, Past Due [Line Items]
Loans	1,431,994	787,070
Residential real estate | Total past due
Financing Receivable, Past Due [Line Items]
Loans	5,826	8,212
Residential real estate | 30‑59 days past due
Financing Receivable, Past Due [Line Items]
Loans	3,036	6,214
Residential real estate | 60‑89 days past due
Financing Receivable, Past Due [Line Items]
Loans	250	891
Residential real estate | 90 days past due and still accruing
Financing Receivable, Past Due [Line Items]
Loans	871
Residential real estate | 90 days past due and not accruing
Financing Receivable, Past Due [Line Items]
Loans	1,669	1,107
Commercial real estate
Financing Receivable, Past Due [Line Items]
Loans	2,283,521	1,065,409
Non-accrual Current Loans	3,117	150
Commercial real estate | Financial Asset Acquired with Credit Deterioration
Financing Receivable, Past Due [Line Items]
Loans		11,866
Commercial real estate | Current
Financing Receivable, Past Due [Line Items]
Loans	2,278,425	1,052,314
Commercial real estate | Total past due
Financing Receivable, Past Due [Line Items]
Loans	1,979	1,079
Commercial real estate | 30‑59 days past due
Financing Receivable, Past Due [Line Items]
Loans	785	369
Commercial real estate | 60‑89 days past due
Financing Receivable, Past Due [Line Items]
Loans	445	0
Commercial real estate | 90 days past due and still accruing
Financing Receivable, Past Due [Line Items]
Loans	0
Commercial real estate | 90 days past due and not accruing
Financing Receivable, Past Due [Line Items]
Loans	749	710
Commercial
Financing Receivable, Past Due [Line Items]
Loans	229,474	147,856
Non-accrual Current Loans	844	174
Commercial | Financial Asset Acquired with Credit Deterioration
Financing Receivable, Past Due [Line Items]
Loans		156
Commercial | Current
Financing Receivable, Past Due [Line Items]
Loans	228,527	147,511
Commercial | Total past due
Financing Receivable, Past Due [Line Items]
Loans	103	15
Commercial | 30‑59 days past due
Financing Receivable, Past Due [Line Items]
Loans	103	15
Commercial | 60‑89 days past due
Financing Receivable, Past Due [Line Items]
Loans	0	0
Commercial | 90 days past due and still accruing
Financing Receivable, Past Due [Line Items]
Loans	0
Commercial | 90 days past due and not accruing
Financing Receivable, Past Due [Line Items]
Loans	0	0
Consumer
Financing Receivable, Past Due [Line Items]
Loans	330,411	286,026
Non-accrual Current Loans	1	28
Consumer | Financial Asset Acquired with Credit Deterioration
Financing Receivable, Past Due [Line Items]
Loans		14
Consumer | Current
Financing Receivable, Past Due [Line Items]
Loans	325,699	285,750
Consumer | Total past due
Financing Receivable, Past Due [Line Items]
Loans	4,711	234
Consumer | 30‑59 days past due
Financing Receivable, Past Due [Line Items]
Loans	593	223
Consumer | 60‑89 days past due
Financing Receivable, Past Due [Line Items]
Loans	2,744	11
Consumer | 90 days past due and still accruing
Financing Receivable, Past Due [Line Items]
Loans	1,160
Consumer | 90 days past due and not accruing
Financing Receivable, Past Due [Line Items]
Loans	214	0
Credit Cards
Financing Receivable, Past Due [Line Items]
Loans	6,099	$ 0
Non-accrual Current Loans	0
Credit Cards | Current
Financing Receivable, Past Due [Line Items]
Loans	5,944
Credit Cards | Total past due
Financing Receivable, Past Due [Line Items]
Loans	155
Credit Cards | 30‑59 days past due
Financing Receivable, Past Due [Line Items]
Loans	61
Credit Cards | 60‑89 days past due
Financing Receivable, Past Due [Line Items]
Loans	41
Credit Cards | 90 days past due and still accruing
Financing Receivable, Past Due [Line Items]
Loans	53
Credit Cards | 90 days past due and not accruing
Financing Receivable, Past Due [Line Items]
Loans	$ 0