Note 5 - Loans (Tables)

12 Months Ended

Dec. 31, 2022

Notes Tables

Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]

	As of December 31,
	2022			2021
	(In thousands)
Loans:
Commercial loans	$	3,318,778		$	2,982,399
Real estate construction loans		559,372			611,031
Commercial mortgage loans		8,793,685			8,143,272
Residential mortgage loans		5,252,952			4,182,006
Equity lines		324,548			419,487
Installment and other loans		4,689			4,284
Gross loans		18,254,024			16,342,479
Less:
Allowance for loan losses		(146,485	)		(136,157	)
Unamortized deferred loan fees		(6,641	)		(4,321	)
Total loans, net	$	18,100,898		$	16,202,001

Schedule of Related Party Transactions [Table Text Block]

	December 31,
	2022			2021
	(In thousands)
Balance at beginning of year	$	38,532		$	51,288
Additional loans made		25,050			29,182
Payment received		(30,365	)		(41,938	)
Balance at end of year	$	33,217		$	38,532

Impaired Financing Receivables [Table Text Block]

	For the year ended December 31, 2022
	Average Recorded Investment		Interest Income Recognized
	(In thousands)
Commercial loans	$	28,109	$	4
Commercial mortgage loans		28,983		405
Residential mortgage and equity lines		14,251		26
Installment and other loans		28		—
Total	$	71,371	$	435

	For the year ended December 31, 2021
	Average Recorded Investment		Interest Income Recognized
	(In thousands)
Commercial loans	$	21,453	$	—
Real estate construction loans		3,805		—
Commercial mortgage loans		38,047		1,044
Residential mortgage and equity lines		9,435		30
Total	$	72,740	$	1,074

Schedule Of Impaired Loans And Related Allowance And Charge Off [Table Text Block]

	As of December 31, 2022
	Unpaid Principal Balance		Recorded Investment		Allowance
	(In thousands)
With no allocated allowance:
Commercial loans	$	27,341	$	12,949	$	—
Commercial mortgage loans		37,697		32,205		—
Residential mortgage and equity lines		9,626		8,978		—
Installment and other loans		9		8		—
Subtotal	$	74,673	$	54,140	$	—
With allocated allowance:
Commercial loans	$	14,643	$	12,823	$	3,734
Commercial mortgage loans		1,896		1,891		207
Residential mortgage and equity lines		—		—		—
Subtotal	$	16,539	$	14,714	$	3,941
Total non-accrual loans	$	91,212	$	68,854	$	3,941

	As of December 31, 2021
	Unpaid Principal Balance		Recorded Investment		Allowance
	(In thousands)
With no allocated allowance:
Commercial loans	$	15,879	$	11,342	$	—
Commercial mortgage loans		24,437		21,209		—
Residential mortgage and equity lines		6,020		5,850		—
Subtotal	$	46,336	$	38,401	$	—
With allocated allowance:
Commercial loans	$	14,294	$	5,217	$	894
Commercial mortgage loans		17,930		16,964		3,631
Residential mortgage and equity lines		6,048		5,264		22
Subtotal	$	38,272	$	27,445	$	4,547
Total non-accrual loans	$	84,608	$	65,846	$	4,547

Financing Receivable, Nonaccrual [Table Text Block]

	As of December 31,
	2022		2021		2020
	(In thousands)
Non-accrual portfolio loans	$	68,854	$	65,846	$	67,684
Contractual interest due		4,620		4,032		3,093
Interest recognized		435		1,074		1,008
Net interest foregone	$	4,185	$	2,958	$	2,085

Financing Receivable, Past Due [Table Text Block]

	As of December 31, 2022
	30-59 Days Past Due		60-89 Days Past Due		90 Days or More Past Due		Non-accrual Loans		Total Past Due		Loans Not Past Due		Total
Type of Loans:	(In thousands)
Commercial loans	$	8,192	$	3,235	$	10,208	$	25,772	$	47,407	$	3,271,371	$	3,318,778
Real estate construction loans		—		—		—		—		—		559,372		559,372
Commercial mortgage loans		25,772		—		1,372		34,096		61,240		8,732,445		8,793,685
Residential mortgage loans and equity lines		47,043		5,685		—		8,978		61,706		5,515,794		5,577,500
Installment and other loans		5		1		—		8		14		4,675		4,689
Total loans	$	81,012	$	8,921	$	11,580	$	68,854	$	170,367	$	18,083,657	$	18,254,024

	As of December 31, 2021
	30-59 Days Past Due		60-89 Days Past Due		90 Days or More Past Due		Non-accrual Loans		Total Past Due		Loans Not Past Due		Total
Type of Loans:	(In thousands)
Commercial loans	$	4,294	$	9,877	$	1,439	$	16,558	$	32,168	$	2,950,231	$	2,982,399
Real estate construction loans		—		—		—		—		—		611,031		611,031
Commercial mortgage loans		8,389		—		—		38,173		46,562		8,096,710		8,143,272
Residential mortgage loans		20,129		3,138		—		11,115		34,382		4,567,111		4,601,493
Installment and other loans		—		—		—		—		—		4,284		4,284
Total loans	$	32,812	$	13,015	$	1,439	$	65,846	$	113,112	$	16,229,367	$	16,342,479

Schedule Of Troubled Debt Restructurings [Table Text Block]

	Loans Modified as TDRs During the Year Ended December 31, 2022
	No. of Contracts		Pre-Modification Outstanding Recorded Investment		Post-Modification Outstanding Recorded Investment		Specific Reserve (1)		Charge-offs
	(Dollars in thousands)
Commercial loans		4	$	6,115	$	6,115	$	427	$	—
Commercial mortgage loans		3		3,676		3,669		—		—
Residential mortgage and equity lines		8		2,189		2,162		—		—
Total		15	$	11,980	$	11,946	$	427	$	—

	Loans Modified as TDRs During the Year Ended December 31, 2021
	No. of Contracts		Pre-Modification Outstanding Recorded Investment		Post-Modification Outstanding Recorded Investment		Specific Reserve		Charge-offs
	(Dollars in thousands)
Commercial loans		3	$	2,150	$	2,150	$	—	$	—
Residential mortgage and equity lines		2		3		3		—		—
Total		5	$	2,153	$	2,153	$	—	$	—

	Loans Modified as TDRs During the Year Ended December 31, 2020
	No. of Contracts		Pre-Modification Outstanding Recorded Investment		Post-Modification Outstanding Recorded Investment		Specific Reserve		Charge-off
	(Dollars in thousands)
Commercial loans		5	$	5,417	$	5,417	$	—	$	—
Total		5	$	5,417	$	5,417	$	—	$	—

Financing Receivable, Troubled Debt Restructuring [Table Text Block]

	December 31, 2022
Accruing TDRs	Payment Deferral		Rate Reduction		Rate Reduction and Payment Deferral		Total
	(In thousands)
Commercial loans	$	2,588	$	—	$	—	$	2,588
Commercial mortgage loans		2,791		—		5,855		8,646
Residential mortgage loans		2,181		445		1,285		3,911
Total accruing TDRs	$	7,560	$	445	$	7,140	$	15,145

	December 31, 2021
Accruing TDRs	Payment Deferral		Rate Reduction		Rate Reduction and Payment Deferral		Total
	(In thousands)
Commercial loans	$	3,368	$	—	$	—	$	3,368
Commercial mortgage loans		438		5,522		168		6,128
Residential mortgage loans		1,464		249		1,628		3,341
Total accruing TDRs	$	5,270	$	5,771	$	1,796	$	12,837

Non Accrual Troubled Debt Restructurings [Table Text Block]

	December 31, 2022
Non-accrual TDRs	Payment Deferral		Rate Reduction		Rate Reduction and Payment Deferral		Total
	(In thousands)
Commercial loans	$	3,629	$	—	$	—	$	3,629
Commercial mortgage loans		1,098		—		—		1,098
Residential mortgage loans		1,621		—		—		1,621
Total non-accrual TDRs	$	6,348	$	—	$	—	$	6,348

	December 31, 2021
Non-accrual TDRs	Payment Deferral		Rate Reduction		Rate Reduction and Payment Deferral		Total
	(In thousands)
Commercial loans	$	7,717	$	—	$	—	$	7,717
Residential mortgage loans		458		—		—		458
Total non-accrual TDRs	$	8,175	$	—	$	—	$	8,175

Loan Held for Investment by Loan Portfolio Segments, Internal Risk Ratings and Vintage Year [Table Text Block]

	Loans Amortized Cost Basis by Origination Year
December 31, 2022	2022			2021		2020			2019			2018			Prior			Revolving Loans			Revolving Converted to Term Loans			Total
	(In thousands)
Commercial loans
Pass/Watch	$	488,748		$	446,647	$	180,226		$	119,355		$	107,896		$	106,649		$	1,753,509		$	6,560		$	3,209,590
Special Mention		1,212			4,696		2,818			68			308			4,354			41,110			—			54,566
Substandard		25			12,750		342			4,859			2,766			6,985			22,084			133			49,944
Doubtful		—			—		—			1,504			2,185			—			234			—			3,923
Total	$	489,985		$	464,093	$	183,386		$	125,786		$	113,155		$	117,988		$	1,816,937		$	6,693		$	3,318,023
YTD period charge-offs	$	96		$	587	$	120		$	71		$	1,786		$	360		$	202		$	—		$	3,222
YTD period recoveries		(8	)		—		(39	)		—			(254	)		(335	)		(1,829	)		—			(2,465	)
Net	$	88		$	587	$	81		$	71		$	1,532		$	25		$	(1,627	)	$	—		$	757
Real estate construction loans
Pass/Watch	$	99,798		$	264,197	$	113,312		$	20,479		$	3,067		$	—		$	—		$	—		$	500,853
Special Mention		—			360		9,449			11,643			22,945			—			—			—			44,397
Substandard		—			—		—			1,736			9,309			—			—			—			11,045
Total	$	99,798		$	264,557	$	122,761		$	33,858		$	35,321		$	—		$	—		$	—		$	556,295
YTD period charge-offs	$	—		$	—	$	—		$	—		$	—		$	—		$	—		$	—		$	—
YTD period recoveries		—			—		—			—			—			(6	)		—			—			(6	)
Net	$	—		$	—	$	—		$	—		$	—		$	(6	)	$	—		$	—		$	(6	)
Commercial mortgage loans
Pass/Watch	$	2,087,650		$	1,728,607	$	975,953		$	1,094,505		$	908,748		$	1,420,982		$	178,116		$	—		$	8,394,561
Special Mention		22,150			57,015		25,593			32,119			17,999			63,782			1,600			—			220,258
Substandard		12,320			7,861		14,392			19,972			34,899			81,844			2,631			—			173,919
Total	$	2,122,120		$	1,793,483	$	1,015,938		$	1,146,596		$	961,646		$	1,566,608		$	182,347		$	—		$	8,788,738
YTD period charge-offs	$	—		$	—	$	—		$	—		$	2,091		$	—		$	—		$	—		$	2,091
YTD period recoveries		—			—		—			(240	)		—			(7	)		(111	)		—			(358	)
Net	$	—		$	—	$	—		$	(240	)	$	2,091		$	(7	)	$	(111	)	$	—		$	1,733
Residential mortgage loans
Pass/Watch	$	1,228,391		$	964,799	$	580,990		$	600,786		$	417,565		$	1,444,320		$	—		$	—		$	5,236,851
Special Mention		—			—		33			—			752			905			—			—			1,690
Substandard		206			762		2,028			1,966			1,799			8,785			—			—			15,546
Total	$	1,228,597		$	965,561	$	583,051		$	602,752		$	420,116		$	1,454,010		$	—		$	—		$	5,254,087
YTD period charge-offs	$	—		$	—	$	—		$	—		$	—		$	—		$	—		$	—		$	—
YTD period recoveries		—			—		—			—			—			(45	)		—			—			(45	)
Net	$	—		$	—	$	—		$	—		$	—		$	(45	)	$	—		$	—		$	(45	)
Equity lines
Pass/Watch	$	731		$	—	$	—		$	—		$	—		$	—		$	302,825		$	21,460		$	325,016
Special Mention		5			—		—			—			—			—			—			—			5
Substandard		12			—		—			—			—			—			1,043			220			1,275
Total	$	748		$	—	$	—		$	—		$	—		$	—		$	303,868		$	21,680		$	326,296
YTD period charge-offs	$	—		$	—	$	—		$	—		$	—		$	—		$	—		$	—		$	—
YTD period recoveries		—			—		—			—			—			—			(11	)		(16	)		(27	)
Net	$	—		$	—	$	—		$	—		$	—		$	—		$	(11	)	$	(16	)	$	(27	)
Installment and other loans
Pass/Watch	$	1,792		$	2,152	$	—		$	—		$	—		$	—		$	—		$	—		$	3,944
Total	$	1,792		$	2,152	$	—		$	—		$	—		$	—		$	—		$	—		$	3,944
YTD period charge-offs	$	115		$	—	$	—		$	—		$	—		$	—		$	62		$	—		$	177
YTD period recoveries		(2	)		—		—			—			—			—			(2	)		—			(4	)
Net	$	113		$	—	$	—		$	—		$	—		$	—		$	60		$	—		$	173
Total loans	$	3,943,040		$	3,489,846	$	1,905,136		$	1,908,992		$	1,530,238		$	3,138,606		$	2,303,152		$	28,373		$	18,247,383
Net charge-offs/(recoveries)	$	201		$	587	$	81		$	(169	)	$	3,623		$	(33	)	$	(1,689	)	$	(16	)	$	2,585

	Loans Amortized Cost Basis by Origination Year
December 31, 2021	2021		2020			2019			2018			2017		Prior			Revolving Loans			Revolving Converted to Term Loans			Total
	(In thousands)
Commercial loans
Pass/Watch	$	606,770	$	268,756		$	183,468		$	142,419		$	80,701	$	100,496		$	1,437,463		$	7,433		$	2,827,506
Special Mention		395		780			1,138			1,645			3,157		—			40,761			49			47,925
Substandard		450		5,879			22,513			16,423			14,309		5,221			34,713			5,716			105,224
Doubtful		—		—			—			—			—		—			900			—			900
Total	$	607,615	$	275,415		$	207,119		$	160,487		$	98,167	$	105,717		$	1,513,837		$	13,198		$	2,981,555
YTD period charge-offs	$	—	$	1,478		$	507		$	366		$	—	$	50		$	17,650		$	—		$	20,051
YTD period recoveries		—		(1	)		(29	)		(124	)		—		(191	)		(1,361	)		—			(1,706	)
Net	$	—	$	1,477		$	478		$	242		$	—	$	(141	)	$	16,289		$	—		$	18,345
Real estate construction loans
Pass/Watch	$	199,188	$	188,782		$	125,316		$	24,548		$	—	$	—		$	—		$	—		$	537,834
Special Mention		—		23,107			27,672			17,374			—		—			—			—			68,153
Substandard		—		—			1,919			—			—		—			—			—			1,919
Total	$	199,188	$	211,889		$	154,907		$	41,922		$	—	$	—		$	—		$	—		$	607,906
YTD period charge-offs	$	—	$	—		$	—		$	—		$	—	$	—		$	—		$	—		$	—
YTD period recoveries		—		—			—			—			—		(76	)		—			—			(76	)
Net	$	—	$	—		$	—		$	—		$	—	$	(76	)	$	—		$	—		$	(76	)
Commercial mortgage loans
Pass/Watch	$	1,893,807	$	1,201,825		$	1,253,548		$	1,031,191		$	727,916	$	1,313,882		$	198,869		$	—		$	7,621,038
Special Mention		45,719		59,182			49,796			103,101			61,105		60,448			750			—			380,101
Substandard		1,110		—			13,483			42,803			1,580		76,906			3,297			—			139,179
Total	$	1,940,636	$	1,261,007		$	1,316,827		$	1,177,095		$	790,601	$	1,451,236		$	202,916		$	—		$	8,140,318
YTD period charge-offs	$	—	$	—		$	—		$	—		$	—	$	—		$	—		$	—		$	—
YTD period recoveries		—		—			(240	)		—			—		(28	)		(111	)		—			(379	)
Net	$	—	$	—		$	(240	)	$	—		$	—	$	(28	)	$	(111	)	$	—		$	(379	)
Residential mortgage loans
Pass/Watch	$	978,375	$	622,999		$	678,775		$	502,325		$	453,992	$	929,846		$	—		$	—		$	4,166,312
Special Mention		—		46			1,576			1,064			836		438			—			—			3,960
Substandard		1,684		147			2,698			2,574			862		5,255			—			—			13,220
Total	$	980,059	$	623,192		$	683,049		$	505,963		$	455,690	$	935,539		$	—		$	—		$	4,183,492
YTD period charge-offs	$	—	$	—		$	—		$	—		$	3	$	—		$	—		$	—		$	3
YTD period recoveries		—		—			—			—			—		(208	)		—			—			(208	)
Net	$	—	$	—		$	—		$	—		$	3	$	(208	)	$	—		$	—		$	(205	)
Equity lines
Pass/Watch	$	—	$	—		$	—		$	—		$	—	$	5		$	389,069		$	30,025		$	419,099
Substandard		—		—			—			—			—		—			1,230			273			1,503
Total	$	—	$	—		$	—		$	—		$	—	$	5		$	390,299		$	30,298		$	420,602
YTD period charge-offs	$	—	$	—		$	—		$	—		$	—	$	—		$	—		$	—		$	—
YTD period recoveries		—		—			—			—			—		—			(10	)		(64	)		(74	)
Net	$	—	$	—		$	—		$	—		$	—	$	—		$	(10	)	$	(64	)	$	(74	)
Installment and other loans
Pass/Watch	$	4,117	$	168		$	—		$	—		$	—	$	—		$	—		$	—		$	4,285
Total	$	4,117	$	168		$	—		$	—		$	—	$	—		$	—		$	—		$	4,285
YTD period charge-offs	$	—	$	—		$	—		$	—		$	—	$	—		$	—		$	—		$	—
YTD period recoveries		—		—			—			—			—		—			—			—			—
Net	$	—	$	—		$	—		$	—		$	—	$	—		$	—		$	—		$	—
Total loans	$	3,731,615	$	2,371,671		$	2,361,902		$	1,885,467		$	1,344,458	$	2,492,497		$	2,107,052		$	43,496		$	16,338,158
Net charge-offs/(recoveries)	$	—	$	1,477		$	238		$	242		$	3	$	(453	)	$	16,168		$	(64	)	$	17,611

Financing Receivable, Allowance for Credit Loss [Table Text Block]

				Real Estate			Commercial			Residential			Installment
	Commercial			Construction			Mortgage			Mortgage			and Other
	Loans			Loans			Loans			and Equity Lines			Loans			Total
	(In thousands)
2021 Beginning Balance	$	68,742		$	30,854		$	49,205		$	17,737		$	—		$	166,538
Impact of ASU 2016-13 adoption	$	(31,466	)	$	(24,307	)	$	34,993		$	19,211		$	9		$	(1,560	)
Allowance for loan losses, January 1, 2021	$	37,276		$	6,547		$	84,198		$	36,948		$	9		$	164,978
Provision/(reversal) for loan losses		24,463			(321	)		(23,401	)		(11,943	)		(8	)		(11,210	)
Charge-offs		(20,051	)		—			—			(3	)		—			(20,054	)
Recoveries		1,706			76			284			377			—			2,443
Net (Charge-offs)/Recoveries	$	(18,345	)	$	76		$	284		$	374		$	—		$	(17,611	)
2021 Ending Balance	$	43,394		$	6,302		$	61,081		$	25,379		$	1		$	136,157
Provision/(reversal) for loan losses		6,798			4,109			9,018			(7,219	)		207			12,913
Charge-offs		(3,222	)		—			(2,091	)		—			(177	)		(5,490	)
Recoveries		2,465			6			358			72			4			2,905
Net (Charge-offs)/Recoveries	$	(757	)	$	6		$	(1,733	)	$	72		$	(173	)	$	(2,585	)
2022 Ending Balance	$	49,435		$	10,417		$	68,366		$	18,232		$	35		$	146,485
Allowance for unfunded credit commitments, January 1, 2021	$	8,038		$	3,825		$	35		$	—		$	—		$	11,898
Provision/(reversal) for possible credit losses		(4,313	)		(450	)		(35	)		—			—			(4,798	)
Allowance for unfunded credit commitments 2021 Ending Balance	$	3,725		$	3,375		$	—		$	—		$	—		$	7,100
Provision/(reversal) for possible credit losses		1,115			515			—			—			—			1,630
Allowance for unfunded credit commitments 2022 Ending Balance	$	4,840		$	3,890		$	—		$	—		$	—		$	8,730