Loans Receivable, Net - Schedule of Analysis of Allowance for Credit Losses on Loans (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Sep. 30, 2023	Dec. 31, 2023	Dec. 31, 2022
Allowance for credit losses on loans
Balance at period start		$ 56,824	$ 48,850
Provision (benefit) for credit losses		18,695	7,634
Charge-offs		(8,693)	(573)
Recoveries		311	913
Balance at period end		67,137	56,824
Charge-off	$ 8,400
Commercial Real Estate - Investor
Allowance for credit losses on loans
Balance at period start		21,070	25,504
Provision (benefit) for credit losses		15,173	(4,481)
Charge-offs		(8,350)	(8)
Recoveries		6	55
Balance at period end		27,899	21,070
Commercial real estate – owner occupied
Allowance for credit losses on loans
Balance at period start		4,423	5,884
Provision (benefit) for credit losses		(77)	(1,569)
Charge-offs		(6)	(62)
Recoveries		14	170
Balance at period end		4,354	4,423
Commercial and industrial
Allowance for credit losses on loans
Balance at period start		5,695	5,039
Provision (benefit) for credit losses		1,276	561
Charge-offs		(129)	(60)
Recoveries		25	155
Balance at period end		6,867	5,695
Residential real estate
Allowance for credit losses on loans
Balance at period start		24,530	11,155
Provision (benefit) for credit losses		2,456	13,275
Charge-offs		0	(56)
Recoveries		43	156
Balance at period end		27,029	24,530
Other consumer
Allowance for credit losses on loans
Balance at period start		1,106	1,268
Provision (benefit) for credit losses		(133)	(152)
Charge-offs		(208)	(387)
Recoveries		223	377
Balance at period end		$ 988	$ 1,106