Note 4 - Loans (Tables)

12 Months Ended

Dec. 31, 2020

Notes Tables

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

	As of December 31,
	2020			2019
	(In thousands)
Type of Loans:
Commercial loans	$	2,836,833		$	2,778,744
Real estate construction loans		679,492			579,864
Commercial mortgage loans		7,555,027			7,275,262
Residential mortgage loans		4,145,389			4,088,586
Equity lines		424,555			347,975
Installment and other loans		3,100			5,050
Gross loans		15,644,396			15,075,481
Less:
Allowance for loan losses		(166,538	)		(123,224	)
Unamortized deferred loan fees		(2,494	)		(626	)
Total loans and leases, net	$	15,475,364		$	14,951,631

Schedule of Related Party Transactions [Table Text Block]

	December 31,
	2020			2019
	(In thousands)
Balance at beginning of year	$	43,952		$	47,263
Additional loans made		23,102			19,036
Payment received		(15,766	)		(22,347	)
Balance at end of year	$	51,288		$	43,952

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

	Impaired Loans
	As of December 31, 2020						As of December 31, 2019
	Unpaid Principal Balance		Recorded Investment		Allowance		Unpaid Principal Balance		Recorded Investment		Allowance
	(In thousands)
With no allocated allowance
Commercial loans	$	23,784	$	20,698	$	—	$	20,134	$	15,857	$	—
Real estate construction loans		5,776		4,286		—		5,776		4,580		—
Commercial mortgage loans		22,877		22,287		—		9,234		9,030		—
Residential mortgage and equity lines		6,379		6,307		—		6,171		6,073		—
Subtotal	$	58,816	$	53,578	$	—	$	41,315	$	35,540	$	—
With allocated allowance
Commercial loans	$	13,703	$	6,372	$	1,030	$	8,769	$	8,739	$	2,543
Commercial mortgage loans		31,134		31,003		5,254		26,117		26,040		473
Residential mortgage and equity lines		5,005		4,452		145		6,740		5,540		220
Subtotal	$	49,842	$	41,827	$	6,429	$	41,626	$	40,319	$	3,236
Total impaired loans	$	108,658	$	95,405	$	6,429	$	82,941	$	75,859	$	3,236

Impaired Financing Receivables [Table Text Block]

	For the year ended December 31,
	2020		2019		2018		2020		2019		2018
	Average Recorded Investment						Interest Income Recognized
	(In thousands)
Commercial loans	$	31,009	$	37,475	$	44,486	$	246	$	412	$	685
Real estate construction loans		4,408		4,697		6,835		294		—		—
Commercial mortgage loans		41,649		47,612		57,596		1,602		1,366		2,125
Residential mortgage and equity lines		14,287		12,799		13,679		252		306		356
Subtotal	$	91,353	$	102,583	$	122,596	$	2,394	$	2,084	$	3,166

Financing Receivable, Nonaccrual [Table Text Block]

	2020		2019		2018
	(In thousands)
Non-accrual portfolio loans	$	67,684	$	40,523	$	41,815
Contractual interest due	$	3,093	$	1,775	$	1,618
Interest recognized		1,008		85		66
Net interest foregone	$	2,085	$	1,690	$	1,552

Financing Receivable, Past Due [Table Text Block]

	As of 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		Amortized Cost > 90 days and Accruing
Type of Loans:	(In thousands)
Commercial loans	$	52,601	$	3,182	$	2,947	$	23,087	$	81,817	$	2,755,016	$	2,836,833	$	2,947
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		2,035
Residential mortgage loans		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	$	4,982

	As of December 31, 2019
	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		Amortized Cost > 90 days and Accruing
Type of Loans:	(In thousands)
Commercial loans	$	24,681	$	9,954	$	6,409	$	19,381	$	60,425	$	2,718,319	$	2,778,744	$	6,409
Real estate construction loans		5,846		6,753		—		4,580		17,179		562,685		579,864		—
Commercial mortgage loans		7,694		2,609		—		9,928		20,231		7,255,031		7,275,262		—
Residential mortgage loans		26,028		965		—		6,634		33,627		4,402,934		4,436,561		—
Installment and other loans		—		—		—		—		—		5,050		5,050		—
Total loans	$	64,249	$	20,281	$	6,409	$	40,523	$	131,462	$	14,944,019	$	15,075,481	$	6,409

Schedule Of Troubled Debt Restructurings [Table Text Block]

	No. of Contracts		Pre-Modification Outstanding Recorded Investment		Post-Modification Outstanding Recorded Investment		Specific Reserve		Charge-offs
	(Dollars in thousands)
Commercial loans		5	$	5,417	$	5,417	$	—	$	—
Total		5	$	5,417	$	5,417	$	—	$	—

	No. of Contracts		Pre-Modification Outstanding Recorded Investment		Post-Modification Outstanding Recorded Investment		Specific Reserve		Charge-offs
	(Dollars in thousands)
Commercial loans		23	$	25,937	$	21,874	$	2,190	$	4,063
Residential mortgage and equity lines		1		42		42		—		—
Total		24	$	25,979	$	21,916	$	2,190	$	4,063

	No. of Contracts		Pre-Modification Outstanding Recorded Investment		Post-Modification Outstanding Recorded Investment		Specific Reserve		Charge-off
	(Dollars in thousands)
Commercial loans		23	$	13,290	$	13,290	$	1,384	$	—
Commercial mortgage loans		7		14,626		14,626		111		—
Residential mortgage and equity lines		4		1,214		1,214		23		—
Total		34	$	29,130	$	29,130	$	1,518	$	—

Financing Receivable, Troubled Debt Restructuring [Table Text Block]

	December 31, 2020
Accruing TDRs	Payment Deferral		Rate Reduction		Rate Reduction and Payment Deferral		Total
	(In thousands)
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

	December 31, 2019
Accruing TDRs	Payment Deferral		Rate Reduction		Rate Reduction and Payment Deferral		Total
	(In thousands)
Commercial loans	$	5,215	$	—	$	—	$	5,215
Commercial mortgage loans		615		5,748		18,779		25,142
Residential mortgage loans		2,525		311		2,143		4,979
Total accruing TDRs	$	8,355	$	6,059	$	20,922	$	35,336

Non Accrual Troubled Debt Restructurings [Table Text Block]

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

	December 31, 2019
Non-accrual TDRs	Payment Deferral		Rate Reduction		Rate Reduction and Payment Deferral		Total
	(In thousands)
Commercial loans	$	16,692	$	—	$	—	$	16,692
Residential mortgage loans		1,220		—		136		1,356
Total non-accrual TDRs	$	17,912	$	—	$	136	$	18,048

Activity Within The Troubled Debt Resturings [Table Text Block]

Accruing TDRs	2020			2019			2018
	(In thousands)
Beginning balance	$	35,336		$	65,071		$	68,565
New restructurings		5,417			15,432			26,114
Restructured loans restored to accrual status		263			365			2,896
Charge-offs		—			(1,341	)		—
Payments		(13,295	)		(42,895	)		(30,406	)
Restructured loans placed on non-accrual		—			(1,296	)		(2,098	)
Ending balance	$	27,721		$	35,336		$	65,071

Non-accrual TDRs	2020			2019			2018
	(In thousands)
Beginning balance	$	18,048		$	24,189		$	33,416
New restructurings		—			10,547			3,015
Restructured loans placed on non-accrual		—			1,296			2,098
Charge-offs		(4,970	)		(3,607	)		(2,347	)
Payments		(3,830	)		(14,012	)		(9,097	)
Restructured loans restored to accrual status		(263	)		(365	)		(2,896	)
Ending balance	$	8,985		$	18,048		$	24,189

Financing Receivable Credit Quality Indicators [Table Text Block]

	As of 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 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

	As of December 31, 2019
	Pass/Watch		Special Mention		Substandard		Doubtful		Total
	(In thousands)
Commercial loans	$	2,528,944	$	166,016	$	83,784	$	—	$	2,778,744
Real estate construction loans		461,597		113,687		4,580		—		579,864
Commercial mortgage loans		6,992,933		196,454		85,875		—		7,275,262
Residential mortgage and equity lines		4,427,205		914		8,442		—		4,436,561
Installment and other loans		5,050		—		—		—		5,050
Total gross loans	$	14,415,729	$	477,071	$	182,681	$	—	$	15,075,481

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)
2019 Beginning Balance	$	54,978		$	19,626		$	33,487		$	14,282		$	18		$	122,391
Provision/(reversal) for loan losses		4,885			(4,764	)		(5,216	)		(1,906	)		1			(7,000	)
Charge-offs		(6,997	)		—			—			—			—			(6,997	)
Recoveries		4,155			4,612			5,331			732			—			14,830
Net (Charge-offs)/Recoveries		(2,842	)		4,612			5,331			732			—			7,833
2019 Ending Balance	$	57,021		$	19,474		$	33,602		$	13,108		$	19		$	123,224
Reserve for impaired loans	$	2,543		$	—		$	473		$	220		$	—		$	3,236
Reserve for non-impaired loans	$	54,478		$	19,474		$	33,129		$	12,888		$	19		$	119,988
Reserve for off-balance sheet credit commitments	$	2,301		$	1,047		$	193		$	311		$	3		$	3,855
2020 Beginning Balance	$	57,021		$	19,474		$	33,602		$	13,108		$	19		$	123,224
Provision/(reversal) for loan losses		26,450			11,380			15,164			4,525			(19	)		57,500
Charge-offs		(21,996	)		—			—			—			—			(21,996	)
Recoveries		7,267			—			439			104			—			7,810
Net (Charge-offs)/Recoveries		(14,729	)		—			439			104			—			(14,186	)
2020 Ending Balance	$	68,742		$	30,854		$	49,205		$	17,737		$	—		$	166,538
Reserve for impaired loans	$	1,030		$	—		$	5,254		$	145		$	—		$	6,429
Reserve for non-impaired loans	$	67,712		$	30,854		$	43,951		$	17,592		$	—		$	160,109
Reserve for off-balance sheet credit commitments	$	4,802		$	690		$	101		$	284		$	3		$	5,880

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

	For the year ended December 31,
	2020			2019			2018
Allowance for Loan Losses	(In thousands)
Balance at beginning of year	$	123,224		$	122,391		$	123,279
Provision/(reversal) for credit losses		57,500			(7,000	)		(4,500	)
Loans charged off		(21,996	)		(6,997	)		(3,206	)
Recoveries of charged off loans		7,810			14,830			6,818
Balance at end of year	$	166,538		$	123,224		$	122,391
Reserve for Off-balance Sheet Credit Commitments
Balance at beginning of year	$	3,855		$	2,250		$	4,588
Provision/(reversal) for credit losses and transfers		2,025			1,605			(2,338	)
Balance at end of year	$	5,880		$	3,855		$	2,250

Impairment Method [Member]

Notes Tables

Impaired Financing Receivables [Table Text Block]

			Real Estate		Commercial		Residential
	Commercial		Construction		Mortgage		Mortgage		Consumer
	Loans		Loans		Loans		and Equity Lines		and Other		Total
	(In thousands)
December 31, 2020
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
December 31, 2019
Loans individually evaluated for impairment
Allowance	$	2,543	$	—	$	473	$	220	$	—	$	3,236
Balance	$	24,596	$	4,580	$	35,070	$	11,613	$	—	$	75,859
Loans collectively evaluated for impairment
Allowance	$	54,478	$	19,474	$	33,129	$	12,888	$	19	$	119,988
Balance	$	2,754,148	$	575,284	$	7,240,192	$	4,424,948	$	5,050	$	14,999,622
Total allowance	$	57,021	$	19,474	$	33,602	$	13,108	$	19	$	123,224
Total balance	$	2,778,744	$	579,864	$	7,275,262	$	4,436,561	$	5,050	$	15,075,481