Investment Securities Held to Maturity Securities by Type (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-maturity	$ 512,911	$ 541,311
Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain	160	3,768
Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss	(35,983)	(8,428)
Securities held to maturity, fair value	477,088	536,651
US Government Agencies Residential Mortgage-backed Securities [Member]
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-maturity	2,305	2,409
Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain	0	101
Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss	(41)	0
Securities held to maturity, fair value	2,264	2,510
US Government Agency Debt Securities Commercial [Member]
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-maturity	86,281	91,439
Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain	0	305
Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss	(6,284)	(1,939)
Securities held to maturity, fair value	79,997	89,805
Residential Mortgage Backed Securities [Member]
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-maturity	366,380	387,848
Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain	76	2,800
Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss	(26,251)	(5,758)
Securities held to maturity, fair value	340,205	384,890
Obligations of U.S. Government-Sponsored Enterprises - Mortgage-Backed Securities - Commercial [Member]
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-maturity	6,672	7,309
Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain	8	148
Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss	0	0
Securities held to maturity, fair value	6,680	7,457
Obligations of States and Political Subdivisions [Member]
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-maturity	28,290	29,402
Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain	76	414
Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss	(1,272)	(103)
Securities held to maturity, fair value	27,094	29,713
Debt Security, Government, Non-US [Member]
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-maturity	1,000	1,000
Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain	0	0
Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss	(11)	(3)
Securities held to maturity, fair value	$ 989	$ 997