Securities - Held-to-Maturity Securities Held by Company (Details) - USD ($)	Dec. 31, 2021	Dec. 31, 2020
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	$ 284,009,000	$ 0
Gross Unrealized Gains	668,000
Gross Unrealized Losses	2,389,000
Fair Value	282,288,000	$ 0
U.S. Treasuries
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	86,689,000
Gross Unrealized Gains	279,000
Gross Unrealized Losses	600,000
Fair Value	86,368,000
Obligations of U.S. Government sponsored entities
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	197,320,000
Gross Unrealized Gains	389,000
Gross Unrealized Losses	1,789,000
Fair Value	$ 195,920,000