Note 8 - Loans (Tables)

3 Months Ended

Mar. 31, 2021

Notes Tables

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

	March 31, 2021			December 31, 2020
	(In thousands)
Commercial loans	$	2,890,693		$	2,836,833
Residential mortgage loans		4,102,203			4,145,389
Commercial mortgage loans		7,549,522			7,555,027
Real estate construction loans		677,816			679,492
Equity lines		428,318			424,555
Installment and other loans		3,296			3,100
Gross loans	$	15,651,848		$	15,644,396
Allowance for loan losses		(147,264	)		(166,538	)
Unamortized deferred loan fees, net		(6,872	)		(2,494	)
Total loans, net	$	15,497,712		$	15,475,364

Impaired Financing Receivables [Table Text Block]

	Three Months Ended March 31,
	2021
	Average Recorded Investment		Interest Income Recognized
	(In thousands)
Commercial loans	$	28,268	$	12
Real estate construction loans		4,229		97
Commercial mortgage loans		40,116		57
Residential mortgage loans and equity lines		8,427		8
Total non-accrual loans	$	81,040	$	174

	Three Months Ended March 31,
	2020
	Average Recorded Investment		Interest Income Recognized
	(In thousands)
Commercial loans	$	28,316	$	70
Real estate construction loans		4,506		98
Commercial mortgage loans		36,040		459
Residential mortgage loans and equity lines		11,371		71
Total impaired loans	$	80,233	$	698

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

	March 31, 2021
	Unpaid Principal Balance		Recorded Investment		Allowance
	(In thousands)
With no allocated allowance
Commercial loans	$	30,111	$	18,534	$	—
Real estate construction loans		5,776		4,189		—
Commercial mortgage loans		27,867		27,199		—
Residential mortgage loans and equity lines		9,205		8,545		—
Subtotal	$	72,959	$	58,467	$	—
With allocated allowance
Commercial loans	$	19,864	$	19,817	$	5,559
Commercial mortgage loans		16,233		16,162		5,133
Subtotal	$	36,097	$	35,979	$	10,692
Total non-accrual loans	$	109,056	$	94,446	$	10,692

	December 31, 2020
	Unpaid Principal Balance		Recorded Investment		Allowance
				(In thousands)
With no allocated allowance
Commercial loans	$	23,784	$	20,698	$	—
Real estate construction loans		5,776		4,286		—
Commercial mortgage loans		22,877		22,287		—
Residential mortgage loans and equity lines		6,379		6,307		—
Subtotal	$	58,816	$	53,578	$	—
With allocated allowance
Commercial loans	$	13,703	$	6,372	$	1,030
Commercial mortgage loans		31,134		31,003		5,254
Residential mortgage loans and equity lines		5,005		4,452		145
Subtotal	$	49,842	$	41,827	$	6,429
Total impaired loans	$	108,658	$	95,405	$	6,429

Financing Receivable, Past Due [Table Text Block]

	March 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
	(In thousands)
Commercial loans	$	13,845	$	1,645	$	1,880	$	38,351	$	55,721	$	2,834,972	$	2,890,693
Real estate construction loans		—		—		—		4,189		4,189		673,627		677,816
Commercial mortgage loans		6,659		274		258		43,361		50,552		7,498,970		7,549,522
Residential mortgage loans and equity lines		21,298		345		—		8,545		30,188		4,500,333		4,530,521
Installment and other loans		—		—		—		—		—		3,296		3,296
Total loans	$	41,802	$	2,264	$	2,138	$	94,446	$	140,650	$	15,511,198	$	15,651,848

	December 31, 2020
	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
	(In thousands)
Commercial loans	$	52,601	$	3,182	$	2,947	$	23,087	$	81,817	$	2,755,016	$	2,836,833
Real estate construction loans		6,257		—		—		4,286		10,543		668,949		679,492
Commercial mortgage loans		45,186		18,069		2,035		33,715		99,005		7,456,022		7,555,027
Residential mortgage loans and equity lines		14,315		4,223		—		6,596		25,134		4,544,810		4,569,944
Installment and other loans		43		—		—		—		43		3,057		3,100
Total loans	$	118,402	$	25,474	$	4,982	$	67,684	$	216,542	$	15,427,854	$	15,644,396

Schedule Of Troubled Debt Restructurings [Table Text Block]

	Three Months Ended March 31, 2021								March 31, 2021
	No. of Contracts		Pre-Modification Outstanding Recorded Investment		Post-Modification Outstanding Recorded Investment		Charge-offs		Specific Reserve
	(In thousands)
Commercial loans		1	$	686	$	686	$	—	$	—
Total		1	$	686	$	686	$	—	$	—

	Three Months Ended March 31, 2020								March 31, 2020
	No. of Contracts		Pre-Modification Outstanding Recorded Investment		Post-Modification Outstanding Recorded Investment		Charge-offs		Specific Reserve
	(In thousands)
Commercial loans		2	$	534	$	534	$	—	$	—
Total		2	$	534	$	534	$	—	$	—

Financing Receivable, Troubled Debt Restructuring [Table Text Block]

	March 31, 2021
	Payment Deferral		Rate Reduction		Rate Reduction and Payment Deferral		Total
	(In thousands)
Accruing TDRs
Commercial loans	$	4,544	$	—	$	—	$	4,544
Commercial mortgage loans		524		5,607		13,322		19,453
Residential mortgage loans		1,686		262		1,919		3,867
Total accruing TDRs	$	6,754	$	5,869	$	15,241	$	27,864

	December 31, 2020
	Payment Deferral		Rate Reduction		Rate Reduction and Payment Deferral		Total
	(In thousands)
Accruing TDRs
Commercial loans	$	3,983	$	—	$	—	$	3,983
Commercial mortgage loans		515		5,635		13,425		19,575
Residential mortgage loans		1,724		275		2,164		4,163
Total accruing TDRs	$	6,222	$	5,910	$	15,589	$	27,721

Non Accrual Troubled Debt Restructurings [Table Text Block]

	March 31, 2021
	Payment Deferral		Rate Reduction		Rate Reduction and Payment Deferral		Total
	(In thousands)
Non-accrual TDRs
Commercial loans	$	8,150	$	—	$	—	$	8,150
Residential mortgage loans		511		—		—		511
Total non-accrual TDRs	$	8,661	$	—	$	—	$	8,661

	December 31, 2020
	Payment Deferral		Rate Reduction		Rate Reduction and Payment Deferral		Total
	(In thousands)
Non-accrual TDRs
Commercial loans	$	8,462	$	—	$	—	$	8,462
Residential mortgage loans		523		—		—		523
Total non-accrual TDRs	$	8,985	$	—	$	—	$	8,985

Activity Within The Troubled Debt Resturings [Table Text Block]

	Three Months Ended March 31,
	2021			2020
	(In thousands)
Accruing TDRs
Beginning balance	$	27,721		$	35,336
New restructurings		686			534
Payments		(543	)		(1,506	)
Ending balance	$	27,864		$	34,364

	Three Months Ended March 31,
	2021			2020
	(In thousands)
Non-accrual TDRs
Beginning balance	$	8,985		$	18,048
Payments		(324	)		(159	)
Ending balance	$	8,661		$	17,889

Financing Receivable Credit Quality Indicators [Table Text Block]

	December 31, 2020
	Pass/Watch		Special Mention		Substandard		Doubtful		Total
	(In thousands)
Commercial loans	$	2,581,128	$	141,344	$	108,788	$	5,573	$	2,836,833
Real estate construction loans		593,196		82,010		4,286		—		679,492
Commercial mortgage loans		7,202,568		186,283		166,176		—		7,555,027
Residential mortgage loans and equity lines		4,547,052		11,647		11,245		—		4,569,944
Installment and other loans		3,100		—		—		—		3,100
Total gross loans	$	14,927,044	$	421,284	$	290,495	$	5,573	$	15,644,396

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

	Loans Amortized Cost Basis by Origination Year
March 31, 2021	2021		2020		2019			2018			2017		Prior			Revolving Loans			Revolving Converted to Term Loans			Total
	(In thousands)
Commercial loans
Pass	$	255,423	$	527,049	$	316,832		$	245,195		$	125,699	$	94,080		$	1,088,480		$	8,055		$	2,660,813
Special Mention		—		100		16,458			7,535			3,265		31			43,466			246			71,101
Substandard		—		11,537		20,564			29,395			10,834		4,738			67,426			6,207			150,701
Doubtful		—		—		—			—			—		—			2,244			—			2,244
Total		255,423		538,686		353,854			282,125			139,798		98,849			1,201,616			14,508			2,884,859
YTD period charge-offs		—		23		50			366			—		—			8,699			—			9,138
YTD period recoveries		—		—		—			(4	)		—		(156	)		(1,109	)		—			(1,269	)
Net		—		23		50			362			—		(156	)		7,590			—			7,869
Real estate construction loans
Pass		38,405		224,620		162,973			131,063			58,557		—			—			—			615,618
Special Mention		—		33,083		6,373			15,822			—		—			—			—			55,278
Substandard		—		—		—			—			—		4,189			—			—			4,189
Total		38,405		257,703		169,346			146,885			58,557		4,189			—			—			675,085
YTD period charge-offs		—		—		—			—			—		—			—			—			—
YTD period recoveries		—		—		—			—			—		—			—			—			—
Net		—		—		—			—			—		—			—			—			—
Commercial mortgage loans
Pass		325,895		1,393,092		1,373,968			1,283,094			933,711		1,723,499			171,529			—			7,204,788
Special Mention		—		23,492		29,476			22,138			26,290		88,360			5,753			—			195,509
Substandard		—		628		6,832			47,145			3,608		89,479			377			—			148,069
Total		325,895		1,417,212		1,410,276			1,352,377			963,609		1,901,338			177,659			—			7,548,366
YTD period charge-offs		—		—		—			—			—		—			—			—			—
YTD period recoveries		—		—		(60	)		—			—		(7	)		(28	)		—			(95	)
Net		—		—		(60	)		—			—		(7	)		(28	)		—			(95	)
Residential mortgage loans
Pass		182,269		749,890		820,791			635,500			546,962		1,146,581			—			—			4,081,993
Special Mention		—		334		4,749			3,170			1,717		4,023			—			—			13,993
Substandard		—		18		809			2,300			564		4,140			—			—			7,831
Total		182,269		750,242		826,349			640,970			549,243		1,154,744			—			—			4,103,817
YTD period charge-offs		—		—		—			—			—		—			—			—			—
YTD period recoveries		—		—		—			—			—		(7	)		—			—			(7	)
Net		—		—		—			—			—		(7	)		—			—			(7	)
Equity lines
Pass		—		—		—			—			—		10			392,712			34,804			427,526
Special Mention		—		—		—			—			—		—			925			—			925
Substandard		—		—		—			—			—		—			330			729			1,059
Total		—		—		—			—			—		10			393,967			35,533			429,510
YTD period charge-offs		—		—		—			—			—		—			—			—			—
YTD period recoveries		—		—		—			—			—		—			(3	)		(6	)		(9	)
Net		—		—		—			—			—		—			(3	)		(6	)		(9	)
Installment and other loans
Pass		953		2,386		—			—			—		—			—			—			3,339
Total		953		2,386		—			—			—		—			—			—			3,339
YTD period charge-offs		—		—		—			—			—		—			—			—			—
YTD period recoveries		—		—		—			—			—		—			—			—			—
Net		—		—		—			—			—		—			—			—			—
Total loans	$	802,945	$	2,966,229	$	2,759,825		$	2,422,357		$	1,711,207	$	3,159,130		$	1,773,242		$	50,041		$	15,644,976
Net charge-offs/(recoveries)	$	—	$	23	$	(10	)	$	362		$	—	$	(170	)	$	7,559		$	(6	)	$	7,758

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

										Residential
				Real Estate			Commercial			Mortgage Loans			Installment
	Commercial			Construction			Mortgage			and			and Other
	Loans			Loans			Loans			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		(28,748	)		(25,332	)		35,335			19,330			9			594
Allowance for loan losses, January 1, 2021		39,994			5,522			84,540			37,067			9			167,132
Provision/(reversal) for possible credit losses		12,627			446			(18,946	)		(6,231	)		(6	)		(12,110	)
Charge-offs		(9,138	)		—			—			—			—			(9,138	)
Recoveries		1,269			—			95			16			—			1,380
Net (charge-offs)/recoveries		(7,869	)		—			95			16			—			(7,758	)
March 31, 2021 Ending Balance	$	44,752		$	5,968		$	65,689		$	30,852		$	3		$	147,264
Allowance for unfunded credit commitments December 31, 2020	$	4,802		$	690		$	101		$	284		$	3		$	5,880
Impact of ASU 2016-13 adoption		(3,347	)		4,274			(101	)		(284	)		(3	)		539
Allowance for loan losses, January 1, 2021		1,455			4,964			—			—			—			6,419
Provision/(reversal) for possible credit losses		125			(1,574	)		—			—			—			(1,449	)
Allowance for unfunded credit commitments March 31, 2021	$	1,580		$	3,390		$	—		$	—		$	—		$	4,970

								Residential
				Real Estate		Commercial		Mortgage Loans		Installment
	Commercial			Construction		Mortgage		and		and Other
	Loans			Loans		Loans		Equity Lines		Loans			Total
	(In thousands)
2020 Beginning Balance	$	57,021		$	19,474	$	33,602	$	13,108	$	19		$	123,224
Provision/(reversal) for possible credit losses		10,891			3,748		6,129		4,251		(19	)		25,000
Charge-offs		(1,321	)		—		—		—		—			(1,321	)
Recoveries		1,208			—		155		7		—			1,370
Net (charge-offs)/recoveries		(113	)		—		155		7		—			49
March 31, 2020 Ending Balance	$	67,799		$	23,222	$	39,886	$	17,366	$	—		$	148,273
Reserve for impaired loans	$	2,827		$	—	$	405	$	219	$	—		$	3,451
Reserve for non-impaired loans	$	64,972		$	23,222	$	39,481	$	17,147	$	—		$	144,822
Reserve for off-balance sheet credit commitments	$	1,296		$	1,233	$	177	$	304	$	3		$	3,013

Impairment Method [Member]

Notes Tables

Impaired Financing Receivables [Table Text Block]

	December 31, 2020
			Real Estate		Commercial		Residential		Installment
	Commercial		Construction		Mortgage		Mortgage Loans		and
	Loans		Loans		Loans		and Equity Lines		Other Loans		Total
	(In thousands)
Loans individually evaluated for impairment
Allowance	$	1,030	$	—	$	5,254	$	145	$	—	$	6,429
Balance	$	27,070	$	4,286	$	53,289	$	10,760	$	—	$	95,405
Loans collectively evaluated for impairment
Allowance	$	67,712	$	30,854	$	43,951	$	17,592	$	—	$	160,109
Balance	$	2,809,763	$	675,206	$	7,501,738	$	4,559,184	$	3,100	$	15,548,991
Total allowance	$	68,742	$	30,854	$	49,205	$	17,737	$	—	$	166,538
Total balance	$	2,836,833	$	679,492	$	7,555,027	$	4,569,944	$	3,100	$	15,644,396