Allowance for Credit Losses (Narrative) (Details) $ in Thousands	3 Months Ended	6 Months Ended	12 Months Ended
	Dec. 31, 2021 USD ($) risk_code	Jun. 30, 2024	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021 USD ($) risk_code	Dec. 31, 2020 USD ($)
Financing Receivable, Allowance for Credit Loss [Line Items]
Length of time projected by model					10 years
qualitative overlay adjustments | $	$ 17,100				$ 17,100
Interest Income on Non-Accrual Loans and Leases | $					$ 0
Days Past Due on Leases and Equipment Finance					181 days
Loans Deferred Under CARES Act | $	119,000				$ 119,000	$ 355,500
GNMA Loans past due by 90 days, categorized in current due to COVID-19 | $	89,800				89,800	177,700
Financing receivable modifications recorded investments | $	$ 6,700				$ 6,700	15,000
Minimum Collateral Value compared to Secured Loan (Percent)	100.00%				100.00%
Financing receivables modified as troubled debt restructurings within the previous 12 months for which there was a payment default | $					$ 0	1,300
Moody's Analytics November S2 scenario
Financing Receivable, Allowance for Credit Loss [Line Items]
Probability economy performs better than scenario	75.00%
Probability economy performs worse than scenario	25.00%
Non Homogeneous
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Threshold Period Past Due	90 days				90 days
Restructured Loans [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Available commitments for troubled debt restructurings outstanding | $					$ 0	$ 0
Pass | Non Homogeneous | Minimum
Financing Receivable, Allowance for Credit Loss [Line Items]
Internal risk rating code	1				1
Pass | Non Homogeneous | Maximum
Financing Receivable, Allowance for Credit Loss [Line Items]
Internal risk rating code	9				9
Watch | Non Homogeneous | Minimum
Financing Receivable, Allowance for Credit Loss [Line Items]
Internal risk rating code	10				10
Watch | Non Homogeneous | Maximum
Financing Receivable, Allowance for Credit Loss [Line Items]
Internal risk rating code	11				11
Special Mention | Non Homogeneous
Financing Receivable, Allowance for Credit Loss [Line Items]
Internal risk rating code	12				12
Substandard | Non Homogeneous | Minimum
Financing Receivable, Allowance for Credit Loss [Line Items]
Internal risk rating code	13				13
Substandard | Non Homogeneous | Maximum
Financing Receivable, Allowance for Credit Loss [Line Items]
Internal risk rating code	14				14
Doubtful | Non Homogeneous
Financing Receivable, Allowance for Credit Loss [Line Items]
Internal risk rating code	15				15
Loss | Non Homogeneous
Financing Receivable, Allowance for Credit Loss [Line Items]
Internal risk rating code	16				16
Loss | Non Homogeneous | Maximum
Financing Receivable, Allowance for Credit Loss [Line Items]
Internal risk rating code	16				16
Expected | Moody's Analytics' November consensus
Financing Receivable, Allowance for Credit Loss [Line Items]
Real GDP Growth			2.30%	4.10%
Unemployment Rate			4.00%	4.10%
Expected | Moody's Analytics November S2 scenario
Financing Receivable, Allowance for Credit Loss [Line Items]
Real GDP Growth			2.30%	2.10%
Unemployment Rate			4.30%	5.60%
Fed Funds Rate		0.00%
Expected | Minimum | Moody's Analytics' November consensus
Financing Receivable, Allowance for Credit Loss [Line Items]
Fed Funds Rate				0.00%
Expected | Maximum | Moody's Analytics' November consensus
Financing Receivable, Allowance for Credit Loss [Line Items]
Fed Funds Rate				0.25%