Allowance for Credit Losses - Activity by Portfolio Segment (Details) - USD ($)		3 Months Ended		12 Months Ended
	Jan. 06, 2022	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Balance at beginning of the period		$ 77,163,000	$ 70,264,000	$ 70,264,000
Initial allowance for credit losses on PCD loans	$ 12,077,000
Charge-offs		(617,000)	(139,000)	(769,000)
Recoveries		38,000	65,000
Provision for credit loss - loans		239,000	1,213,000
Balance at end of the period		76,823,000	71,403,000	77,163,000
Non-owner occupied commercial
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Balance at beginning of the period		24,319,000	23,462,000	23,462,000
Charge-offs		0	0
Recoveries		0	0
Provision for credit loss - loans		(831,000)	819,000
Balance at end of the period		23,488,000	24,281,000	24,319,000
Owner occupied commercial
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Balance at beginning of the period		6,387,000	6,696,000	6,696,000
Charge-offs		0	0
Recoveries		0	0
Provision for credit loss - loans		(137,000)	(638,000)
Balance at end of the period		6,250,000	6,058,000	6,387,000
Multifamily
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Balance at beginning of the period		9,746,000	9,425,000	9,425,000
Charge-offs		0	0
Recoveries		0	0
Provision for credit loss - loans		518,000	(415,000)
Balance at end of the period		10,264,000	9,010,000	9,746,000
Non-owner occupied residential
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Balance at beginning of the period		2,400,000	2,643,000	2,643,000
Charge-offs		0	0
Recoveries		0	0
Provision for credit loss - loans		(158,000)	(50,000)
Balance at end of the period		2,242,000	2,593,000	2,400,000
Commercial, industrial and other
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Balance at beginning of the period		9,044,000	8,836,000	8,836,000
Charge-offs		0	0	(27,000)
Recoveries		20,000	35,000
Provision for credit loss - loans		(682,000)	(760,000)
Balance at end of the period		8,382,000	8,111,000	9,044,000
Construction
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Balance at beginning of the period		2,246,000	2,968,000	2,968,000
Charge-offs		(564,000)	0	(13,000)
Recoveries		0	0
Provision for credit loss - loans		1,819,000	137,000
Balance at end of the period		3,501,000	3,105,000	2,246,000
Equipment finance
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Balance at beginning of the period		7,521,000	3,445,000	3,445,000
Charge-offs		0	(61,000)	(307,000)
Recoveries		0	15,000
Provision for credit loss - loans		(612,000)	1,049,000
Balance at end of the period		6,909,000	4,448,000	7,521,000
Residential mortgage
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Balance at beginning of the period		10,386,000	8,041,000	8,041,000
Charge-offs		0	0	(128,000)
Recoveries		0	0
Provision for credit loss - loans		18,000	903,000
Balance at end of the period		10,404,000	8,944,000	10,386,000
Consumer
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Balance at beginning of the period		5,114,000	4,748,000	4,748,000
Charge-offs		(53,000)	(78,000)	(294,000)
Recoveries		18,000	15,000
Provision for credit loss - loans		304,000	168,000
Balance at end of the period		$ 5,383,000	$ 4,853,000	$ 5,114,000