Securities - Narrative (Details) - USD ($)	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Debt Securities, Available-for-sale [Line Items]
Debt securities available for sale	$ 1,175,319,000	$ 1,225,083,000
Equity securities with readily determinable fair values not held for trading	252,000	24,342,000
Proceeds from sale of equity securities	23,470,000	0	$ 0
Security pledged as collateral	142,800,000	188,600,000
Mutual funds
Debt Securities, Available-for-sale [Line Items]
Equity securities with readily determinable fair values not held for trading	300,000	24,000,000
Realized loss	42,000
Proceeds from sale of equity securities	23,400,000
Unrealized losses	600,000
Unrealized gains		500,000
Foreign sovereign debt security
Debt Securities, Available-for-sale [Line Items]
Debt securities available for sale	0	0
Foreign corporate debt security
Debt Securities, Available-for-sale [Line Items]
Debt securities available for sale	$ 12,500,000	$ 17,100,000

Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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