Fair Value Measurements - Recurring Fair Value Measurements (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Assets
Equity securities, at fair value	$ 772	$ 787
Derivatives designated as hedging instruments
Assets
Derivative assets	2,653	1,503
Derivatives not designated as hedging instruments
Assets
Derivative assets	887	1,610
Liabilities
Derivatives not designated as hedging instruments	1,044	1,826
Recurring \| Fair Value
Assets
Available for sale debt securities, fair value	1,366,355	1,416,650
Equity securities, at fair value	772	787
Liabilities
Derivatives not designated as hedging instruments	1,044	1,826
Recurring \| Fair Value \| Derivatives designated as hedging instruments
Assets
Derivative assets	2,653	1,503
Recurring \| Fair Value \| Derivatives not designated as hedging instruments
Assets
Derivative assets	887	1,610
Recurring \| Fair Value \| (Level 1)
Assets
Available for sale debt securities, fair value	0	0
Equity securities, at fair value	0	0
Liabilities
Derivatives not designated as hedging instruments	0	0
Recurring \| Fair Value \| (Level 1) \| Derivatives designated as hedging instruments
Assets
Derivative assets	0	0
Recurring \| Fair Value \| (Level 1) \| Derivatives not designated as hedging instruments
Assets
Derivative assets	0	0
Recurring \| Fair Value \| (Level 2)
Assets
Available for sale debt securities, fair value	1,366,355	1,416,650
Equity securities, at fair value	0	0
Liabilities
Derivatives not designated as hedging instruments	1,044	1,826
Recurring \| Fair Value \| (Level 2) \| Derivatives designated as hedging instruments
Assets
Derivative assets	2,653	1,503
Recurring \| Fair Value \| (Level 2) \| Derivatives not designated as hedging instruments
Assets
Derivative assets	887	1,610
Recurring \| Fair Value \| (Level 3)
Assets
Available for sale debt securities, fair value	0	0
Equity securities, at fair value	772	787
Liabilities
Derivatives not designated as hedging instruments	0	0
Recurring \| Fair Value \| (Level 3) \| Derivatives designated as hedging instruments
Assets
Derivative assets	0	0
Recurring \| Fair Value \| (Level 3) \| Derivatives not designated as hedging instruments
Assets
Derivative assets	0	0
Recurring \| Fair Value \| U.S. Treasuries
Assets
Available for sale debt securities, fair value	109,528	109,904
Recurring \| Fair Value \| U.S. Treasuries \| (Level 1)
Assets
Available for sale debt securities, fair value	0	0
Recurring \| Fair Value \| U.S. Treasuries \| (Level 2)
Assets
Available for sale debt securities, fair value	109,528	109,904
Recurring \| Fair Value \| U.S. Treasuries \| (Level 3)
Assets
Available for sale debt securities, fair value	0	0
Recurring \| Fair Value \| Obligations of U.S. Government sponsored entities
Assets
Available for sale debt securities, fair value	443,199	456,458
Recurring \| Fair Value \| Obligations of U.S. Government sponsored entities \| (Level 1)
Assets
Available for sale debt securities, fair value	0	0
Recurring \| Fair Value \| Obligations of U.S. Government sponsored entities \| (Level 2)
Assets
Available for sale debt securities, fair value	443,199	456,458
Recurring \| Fair Value \| Obligations of U.S. Government sponsored entities \| (Level 3)
Assets
Available for sale debt securities, fair value	0	0
Recurring \| Fair Value \| Obligations of U.S. states and political subdivisions
Assets
Available for sale debt securities, fair value	81,036	81,924
Recurring \| Fair Value \| Obligations of U.S. states and political subdivisions \| (Level 1)
Assets
Available for sale debt securities, fair value	0	0
Recurring \| Fair Value \| Obligations of U.S. states and political subdivisions \| (Level 2)
Assets
Available for sale debt securities, fair value	81,036	81,924
Recurring \| Fair Value \| Obligations of U.S. states and political subdivisions \| (Level 3)
Assets
Available for sale debt securities, fair value	0	0
Recurring \| Fair Value \| U.S. Government agencies
Assets
Available for sale debt securities, fair value	42,506	45,240
Recurring \| Fair Value \| U.S. Government agencies \| (Level 1)
Assets
Available for sale debt securities, fair value	0	0
Recurring \| Fair Value \| U.S. Government agencies \| (Level 2)
Assets
Available for sale debt securities, fair value	42,506	45,240
Recurring \| Fair Value \| U.S. Government agencies \| (Level 3)
Assets
Available for sale debt securities, fair value	0	0
Recurring \| Fair Value \| U.S. Government sponsored entities
Assets
Available for sale debt securities, fair value	687,747	720,830
Recurring \| Fair Value \| U.S. Government sponsored entities \| (Level 1)
Assets
Available for sale debt securities, fair value	0	0
Recurring \| Fair Value \| U.S. Government sponsored entities \| (Level 2)
Assets
Available for sale debt securities, fair value	687,747	720,830
Recurring \| Fair Value \| U.S. Government sponsored entities \| (Level 3)
Assets
Available for sale debt securities, fair value	0	0
Recurring \| Fair Value \| U.S. corporate debt securities
Assets
Available for sale debt securities, fair value	2,339	2,294
Recurring \| Fair Value \| U.S. corporate debt securities \| (Level 1)
Assets
Available for sale debt securities, fair value	0	0
Recurring \| Fair Value \| U.S. corporate debt securities \| (Level 2)
Assets
Available for sale debt securities, fair value	2,339	2,294
Recurring \| Fair Value \| U.S. corporate debt securities \| (Level 3)
Assets
Available for sale debt securities, fair value	$ 0	$ 0