Loans and Allowance for Credit Losses Allowance for Loan Losses by Portfolio Segment (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning balance			$ 249,001
Loans charged off	$ (3,724)	$ (2,234)	(7,242)	$ (19,958)
Recoveries of loans previously charged off	3,272	4,539	11,593	9,128
Total net (charge-offs) recoveries	(452)	2,305	4,351	(10,830)
Provision for credit losses	11,004	(600)	5,554	(9,600)
Ending balance	266,838		266,838		$ 249,001
Loans - Excluding OBS Credit Exposure [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning balance	248,564	255,032	249,001	277,567	277,567
CECL Day 1 Provision expense	7,954		7,954
Allowance for credit losses at acquisition	1,135		1,135
Loans charged off	(3,724)	(2,234)	(7,242)	(19,958)
Recoveries of loans previously charged off	3,272	4,539	11,593	9,128
Total net (charge-offs) recoveries	(452)	2,305	4,351	(10,830)
Provision for credit losses	9,637	(610)	4,397	(10,010)
Ending balance	266,838	256,727	266,838	256,727	249,001
Loans - Excluding OBS Credit Exposure [Member] | Real estate - commercial mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning balance	72,605	95,381	87,970	103,425	103,425
CECL Day 1 Provision expense	4,107		4,107
Allowance for credit losses at acquisition	1,051		1,051
Loans charged off	(86)	(14)	(238)	(8,357)
Recoveries of loans previously charged off	29	564	3,677	1,467
Total net (charge-offs) recoveries	(57)	550	3,439	(6,890)
Provision for credit losses	11,144	234	(7,717)	(370)
Ending balance	88,850	96,165	88,850	96,165	87,970
Loans - Excluding OBS Credit Exposure [Member] | Commercial and Industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning balance	72,119	65,404	67,056	74,771	74,771
CECL Day 1 Provision expense	0		0
Allowance for credit losses at acquisition	0		0
Loans charged off	(1,783)	(647)	(2,211)	(5,920)
Recoveries of loans previously charged off	2,213	2,330	4,932	3,792
Total net (charge-offs) recoveries	430	1,683	2,721	(2,128)
Provision for credit losses	(6,424)	(4,196)	(3,652)	(9,752)
Ending balance	66,125	62,891	66,125	62,891	67,056
Loans - Excluding OBS Credit Exposure [Member] | Consumer and Home Equity
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning balance	23,080	21,994	19,749	25,137	25,137
CECL Day 1 Provision expense	131		131
Allowance for credit losses at acquisition	7		7
Loans charged off	(1,172)	(504)	(3,101)	(2,481)
Recoveries of loans previously charged off	682	504	1,898	1,578
Total net (charge-offs) recoveries	(490)	0	(1,203)	(903)
Provision for credit losses	1,812	(526)	5,856	(2,766)
Ending balance	24,540	21,468	24,540	21,468	19,749
Loans - Excluding OBS Credit Exposure [Member] | Real estate - residential mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning balance	61,635	54,188	54,236	51,995	51,995
CECL Day 1 Provision expense	3,716		3,716
Allowance for credit losses at acquisition	77		77
Loans charged off	0	(602)	(66)	(1,290)
Recoveries of loans previously charged off	101	86	415	286
Total net (charge-offs) recoveries	101	(516)	349	(1,004)
Provision for credit losses	1,880	2,557	9,031	5,238
Ending balance	67,409	56,229	67,409	56,229	54,236
Loans - Excluding OBS Credit Exposure [Member] | Real-estate - construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning balance	10,628	12,654	12,941	15,608	15,608
CECL Day 1 Provision expense	0		0
Allowance for credit losses at acquisition	0		0
Loans charged off	0	0	0	(39)
Recoveries of loans previously charged off	0	697	44	1,335
Total net (charge-offs) recoveries	0	697	44	1,296
Provision for credit losses	1,045	(930)	(1,312)	(4,483)
Ending balance	11,673	12,421	11,673	12,421	12,941
Loans - Excluding OBS Credit Exposure [Member] | Equipment lease financing, other and overdrafts
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning balance	8,497	5,411	7,049	6,631	6,631
CECL Day 1 Provision expense	0		0
Allowance for credit losses at acquisition	0		0
Loans charged off	(683)	(467)	(1,626)	(1,871)
Recoveries of loans previously charged off	247	358	627	670
Total net (charge-offs) recoveries	(436)	(109)	(999)	(1,201)
Provision for credit losses	180	2,251	2,191	2,123
Ending balance	$ 8,241	$ 7,553	$ 8,241	$ 7,553	$ 7,049