Fair Value Measurements - Schedule of Book Value and Estimated Fair Value of Significant Financial Instruments Not Recorded at Fair Value (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Financial Assets:
Estimated Fair Value	$ 1,003,850	$ 1,068,438
Restricted equity investments	92,679	93,766
Financial Liabilities:
Time deposits	2,367,659	2,445,422
Securities sold under agreements to repurchase with customers	80,000	73,148
Level 1 Inputs
Financial Assets:
Cash and due from banks	181,198	153,718
Estimated Fair Value	0	0
Restricted equity investments	0	0
Loans receivable, net and loans held-for-sale	0	0
Financial Liabilities:
Deposits other than time deposits	0	0
Time deposits	0	0
FHLB advances and other borrowings	0	0
Securities sold under agreements to repurchase with customers	80,000	73,148
Level 2 Inputs
Financial Assets:
Cash and due from banks	0	0
Estimated Fair Value	1,003,850	1,068,438
Restricted equity investments	0	0
Loans receivable, net and loans held-for-sale	0	0
Financial Liabilities:
Deposits other than time deposits	7,626,358	7,989,527
Time deposits	2,354,246	2,421,058
FHLB advances and other borrowings	1,197,118	1,008,351
Securities sold under agreements to repurchase with customers	0	0
Level 3 Inputs
Financial Assets:
Cash and due from banks	0	0
Estimated Fair Value	0	0
Restricted equity investments	92,679	93,766
Loans receivable, net and loans held-for-sale	9,341,464	9,606,498
Financial Liabilities:
Deposits other than time deposits	0	0
Time deposits	0	0
FHLB advances and other borrowings	0	0
Securities sold under agreements to repurchase with customers	0	0
Book Value
Financial Assets:
Cash and due from banks	181,198	153,718
Estimated Fair Value	1,105,843	1,159,735
Restricted equity investments	92,679	93,766
Loans receivable, net and loans held-for-sale	9,963,179	10,141,887
Financial Liabilities:
Deposits other than time deposits	7,626,358	7,989,527
Time deposits	2,367,659	2,445,422
FHLB advances and other borrowings	1,213,827	1,045,092
Securities sold under agreements to repurchase with customers	$ 80,000	$ 73,148