Borrowings - Additional Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Assets Sold Under Agreements To Repurchase [Line Items]
Securities Sold Under Agreements to Repurchase	$ 450,490	$ 600,590
Long-term Repurchase Agreements with Government Entities
Assets Sold Under Agreements To Repurchase [Line Items]
Securities Sold Under Agreements to Repurchase	$ 500	500
Repurchase agreements, Weighted average interest rate (as a percent)	1.55%
Repurchase agreement counterparty, weighted average maturity of agreements	2 years 10 months 24 days
Long-term Repurchase Agreements with Private Institutions
Assets Sold Under Agreements To Repurchase [Line Items]
Securities Sold Under Agreements to Repurchase	$ 450,000	$ 600,000
Repurchase agreements, Weighted average interest rate (as a percent)	2.46%
Repurchase agreement counterparty, weighted average maturity of agreements	3 years
Long-term Repurchase Agreements with Private Institutions | Minimum [Member]
Assets Sold Under Agreements To Repurchase [Line Items]
Repurchase agreement remaining weighted average term range	2024
Long-term Repurchase Agreements with Private Institutions | Maximum
Assets Sold Under Agreements To Repurchase [Line Items]
Repurchase agreement remaining weighted average term range	2026