Securities - Carrying Amount and Fair Value of Securities (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	$ 892,611	$ 903,492
Unrealized Gains	3,136	14,772
Unrealized Losses	51,170	12,212
Fair Value	844,577	906,052
US government agencies
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	10,445	10,444
Unrealized Gains	58	193
Fair Value	10,503	10,637
Mortgage-backed securities
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	876,426	887,302
Unrealized Gains	2,961	14,246
Unrealized Losses	51,165	12,209
Fair Value	828,222	889,339
Municipal bonds
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	3,240	3,246
Unrealized Gains	117	333
Unrealized Losses	5	3
Fair Value	3,352	3,576
Other debt securities
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	2,500	2,500
Fair Value	$ 2,500	$ 2,500

Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on 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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Amount, before tax, of unrealized loss in accumulated other comprehensive income (AOCI) on 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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Amortized cost 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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