Securities (Narrative) (Details) $ in Thousands	9 Months Ended
Sep. 30, 2024 USD ($) security	Dec. 31, 2023 USD ($) security
Schedule of Available for Sale and Held to Maturity Securities [Line Items]
Accrued interest receivable	$ 2,900	$ 3,700
Available for sale debt securities, fair value	973,266	$ 1,000,380
Amortized cost of callable debt securities	253,600
Fair value of callable debt securities	$ 234,300
Available for sale debt securities, securities in continuous unrealized loss position, number of securities \| security	176	190
Asset Pledged as Collateral
Schedule of Available for Sale and Held to Maturity Securities [Line Items]
Available for sale debt securities, fair value	$ 302,300	$ 311,900
Individual name issuer trust preferred debt securities
Schedule of Available for Sale and Held to Maturity Securities [Line Items]
Available for sale debt securities, fair value	$ 9,193	$ 8,793
Available for sale debt securities, securities in continuous unrealized loss position, number of securities \| security	3	3
Securities in unrealized loss position, number of companies issuing securities \| security	3
Number of debt securities below investment grade \| security	1
Amortized cost of securities below investment grade	$ 2,000
Unrealized losses on securities below investment grade	(140)
Corporate bonds
Schedule of Available for Sale and Held to Maturity Securities [Line Items]
Available for sale debt securities, fair value	$ 12,558	$ 11,889
Available for sale debt securities, securities in continuous unrealized loss position, number of securities \| security	4	4
Securities in unrealized loss position, number of companies issuing securities \| security	3
Number of debt securities below investment grade \| security	1
Amortized cost of securities below investment grade	$ 2,000
Unrealized losses on securities below investment grade	$ (25)
Minimum
Schedule of Available for Sale and Held to Maturity Securities [Line Items]
Maturity period of callable debt securities	10 months
Call features of callable debt securities	1 month
Maximum
Schedule of Available for Sale and Held to Maturity Securities [Line Items]
Maturity period of callable debt securities	20 years
Call features of callable debt securities	9 years

Interest, dividends, rents, ancillary and other revenues earned but not yet received by the entity on its investments.

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