Fair Value Measurements - Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Financial assets:
Securities available for sale, at fair value	$ 1,507,907	$ 1,533,942
Derivative instruments	31,041	36,493
Financial liabilities:
Derivative instruments	20,866	22,056
Recurring
Financial assets:
Derivative instruments	36,602	38,047
Mortgage loans held for sale in loans held for sale	159,318	110,105
Total financial assets	1,703,827	1,682,094
Financial liabilities:
Derivative instruments	29,128	33,185
Recurring \| Securities available for sale
Financial assets:
Securities available for sale, at fair value	1,507,907	1,533,942
Recurring \| Level 1
Financial assets:
Derivative instruments	0	0
Mortgage loans held for sale in loans held for sale	0	0
Total financial assets	0	0
Financial liabilities:
Derivative instruments	0	0
Recurring \| Level 1 \| Securities available for sale
Financial assets:
Securities available for sale, at fair value	0	0
Recurring \| Level 2
Financial assets:
Derivative instruments	36,602	38,047
Mortgage loans held for sale in loans held for sale	159,318	110,105
Total financial assets	1,703,827	1,682,094
Financial liabilities:
Derivative instruments	29,128	33,185
Recurring \| Level 2 \| Securities available for sale
Financial assets:
Securities available for sale, at fair value	1,507,907	1,533,942
Recurring \| Level 3
Financial assets:
Derivative instruments	0	0
Mortgage loans held for sale in loans held for sale	0	0
Total financial assets	0	0
Financial liabilities:
Derivative instruments	0	0
Recurring \| Level 3 \| Securities available for sale
Financial assets:
Securities available for sale, at fair value	$ 0	$ 0

Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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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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