Fair Value Measurements - Fair Value Measurement on Recurring Basis (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Assets
Fair Value	$ 894,335	$ 802,163
U.S. government and agency securities
Assets
Fair Value	21,373	45,660
Municipal securities
Assets
Fair Value	221,212	209,968
Residential CMO and MBS
Assets
Fair Value	306,884	201,872
Commercial CMO and MBS
Assets
Fair Value	315,861	303,746
Corporate obligations
Assets
Fair Value	2,014	11,096
Other asset-backed securities
Assets
Fair Value	26,991	29,821
Recurring
Assets
Fair Value	894,335	802,163
Equity security	240	131
Recurring \| U.S. government and agency securities
Assets
Fair Value	21,373	45,660
Recurring \| Municipal securities
Assets
Fair Value	221,212	209,968
Recurring \| Residential CMO and MBS
Assets
Fair Value	306,884	201,872
Recurring \| Commercial CMO and MBS
Assets
Fair Value	315,861	303,746
Recurring \| Corporate obligations
Assets
Fair Value	2,014	11,096
Recurring \| Other asset-backed securities
Assets
Fair Value	26,991	29,821
Recurring \| Interest Rate Swap
Assets
Derivative assets - interest rate swaps	15,219	25,740
Liabilities
Derivative liabilities - interest rate swaps	15,286	26,162
Recurring \| Level 1
Assets
Fair Value	0	0
Equity security	240	131
Recurring \| Level 1 \| U.S. government and agency securities
Assets
Fair Value	0	0
Recurring \| Level 1 \| Municipal securities
Assets
Fair Value	0	0
Recurring \| Level 1 \| Residential CMO and MBS
Assets
Fair Value	0	0
Recurring \| Level 1 \| Commercial CMO and MBS
Assets
Fair Value	0	0
Recurring \| Level 1 \| Corporate obligations
Assets
Fair Value	0	0
Recurring \| Level 1 \| Other asset-backed securities
Assets
Fair Value		0
Recurring \| Level 1 \| Interest Rate Swap
Assets
Derivative assets - interest rate swaps	0	0
Liabilities
Derivative liabilities - interest rate swaps	0	0
Recurring \| Level 2
Assets
Fair Value	894,335	802,163
Equity security	0	0
Recurring \| Level 2 \| U.S. government and agency securities
Assets
Fair Value		45,660
Recurring \| Level 2 \| Municipal securities
Assets
Fair Value		209,968
Recurring \| Level 2 \| Residential CMO and MBS
Assets
Fair Value		201,872
Recurring \| Level 2 \| Commercial CMO and MBS
Assets
Fair Value		303,746
Recurring \| Level 2 \| Corporate obligations
Assets
Fair Value		11,096
Recurring \| Level 2 \| Other asset-backed securities
Assets
Fair Value		29,821
Recurring \| Level 2 \| Interest Rate Swap
Assets
Derivative assets - interest rate swaps	15,219	25,740
Liabilities
Derivative liabilities - interest rate swaps	15,286	26,162
Recurring \| Level 3
Assets
Fair Value	0	0
Equity security	0	0
Recurring \| Level 3 \| U.S. government and agency securities
Assets
Fair Value	0	0
Recurring \| Level 3 \| Municipal securities
Assets
Fair Value	0	0
Recurring \| Level 3 \| Residential CMO and MBS
Assets
Fair Value	0	0
Recurring \| Level 3 \| Commercial CMO and MBS
Assets
Fair Value	0	0
Recurring \| Level 3 \| Corporate obligations
Assets
Fair Value	0	0
Recurring \| Level 3 \| Other asset-backed securities
Assets
Fair Value	0	0
Recurring \| Level 3 \| Interest Rate Swap
Assets
Derivative assets - interest rate swaps	0	0
Liabilities
Derivative liabilities - interest rate swaps	$ 0	$ 0

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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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