Allowance for Credit Losses - Activity by Portfolio Segment (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
	Jan. 06, 2022	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Balance at beginning of the period		$ 68,836	$ 60,389	$ 58,047	$ 71,124
Initial allowance for credit losses on PCD loans	$ 12,077	0	0	12,077	0
Charge-offs		(56)	(996)	(8,229)	(4,128)
Recoveries		88	1,266	760	1,785
Provision (benefit) for credit loss - loans		11	(2,706)	6,224	(10,828)
Balance at end of the period		68,879	57,953	68,879	57,953
Non-owner occupied commercial
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Balance at beginning of the period		23,926	20,906	20,071	25,910
Initial allowance for credit losses on PCD loans				1,312
Charge-offs		0	(465)	(4)	(2,708)
Recoveries		0	459	4	462
Provision (benefit) for credit loss - loans		294	(387)	2,837	(3,151)
Balance at end of the period		24,220	20,513	24,220	20,513
Owner occupied commercial
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Balance at beginning of the period		6,938	4,100	3,964	3,955
Initial allowance for credit losses on PCD loans				1,137
Charge-offs		0	(204)	(38)	(282)
Recoveries		0	284	351	301
Provision (benefit) for credit loss - loans		(666)	131	858	337
Balance at end of the period		6,272	4,311	6,272	4,311
Multifamily
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Balance at beginning of the period		8,441	7,177	8,309	7,253
Initial allowance for credit losses on PCD loans				4
Charge-offs		0	(28)	0	(28)
Recoveries		0	0	0	0
Provision (benefit) for credit loss - loans		426	418	554	342
Balance at end of the period		8,867	7,567	8,867	7,567
Non-owner occupied residential
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Balance at beginning of the period		2,893	2,592	2,380	3,321
Initial allowance for credit losses on PCD loans				175
Charge-offs		0	(11)	0	(223)
Recoveries		0	16	14	29
Provision (benefit) for credit loss - loans		(101)	206	223	(324)
Balance at end of the period		2,792	2,803	2,792	2,803
Commercial, industrial and other
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Balance at beginning of the period		10,089	10,489	9,891	13,665
Initial allowance for credit losses on PCD loans				2,413
Charge-offs		0	(26)	(1,128)	(401)
Recoveries		49	290	127	439
Provision (benefit) for credit loss - loans		(1,171)	(2,678)	(2,336)	(5,628)
Balance at end of the period		8,967	8,075	8,967	8,075
Construction
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Balance at beginning of the period		2,937	1,034	838	786
Initial allowance for credit losses on PCD loans				6,843
Charge-offs		0	(54)	(6,807)	(54)
Recoveries		0	4	3	71
Provision (benefit) for credit loss - loans		(48)	(118)	2,012	63
Balance at end of the period		2,889	866	2,889	866
Equipment finance
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Balance at beginning of the period		2,253	5,120	3,663	6,552
Initial allowance for credit losses on PCD loans				0
Charge-offs		0	(138)	(121)	(242)
Recoveries		23	0	102	17
Provision (benefit) for credit loss - loans		258	(142)	(1,110)	(1,487)
Balance at end of the period		2,534	4,840	2,534	4,840
Residential mortgage
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Balance at beginning of the period		6,579	3,885	3,914	3,623
Initial allowance for credit losses on PCD loans				179
Charge-offs		0	(28)	0	(64)
Recoveries		0	1	48	177
Provision (benefit) for credit loss - loans		861	348	3,299	470
Balance at end of the period		7,440	4,206	7,440	4,206
Consumer
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Balance at beginning of the period		4,780	5,086	5,017	6,059
Initial allowance for credit losses on PCD loans				14
Charge-offs		(56)	(42)	(131)	(126)
Recoveries		16	212	111	289
Provision (benefit) for credit loss - loans		158	(484)	(113)	(1,450)
Balance at end of the period		$ 4,898	$ 4,772	$ 4,898	$ 4,772