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Allowance for Loan Losses (Tables)
 12 Months Ended
Dec. 31, 2018
Receivables [Abstract]  
Allowance for Credit Losses on Financing Receivables [Table Text Block]
The following tables present a summary of the changes in the allowance for loan losses for the periods indicated:
 
As of and for the year ended December 31,
 
2018
 
2017
 
2016
 
(In thousands)
Allowance for loan losses, beginning of year:
 
 
 
 
 
Commercial and industrial
$
11,735

 
$
12,751

 
$
15,814

Commercial real estate
46,820

 
50,412

 
44,215

Construction and land
4,949

 
3,039

 
6,322

Residential
9,773

 
10,449

 
10,544

Home equity
835

 
1,035

 
1,085

Consumer and other
630

 
391

 
520

Total allowance for loan losses, beginning of year
74,742

 
78,077

 
78,500

Loans charged-off:
 
 
 
 
 
Commercial and industrial
(709
)
 
(393
)
 
(2,851
)
Commercial real estate
(135
)
 
—

 
—

Construction and land
—

 
—

 
(400
)
Residential
(16
)
 
(58
)
 
(605
)
Home equity
—

 
—

 
—

Consumer and other
(39
)
 
(412
)
 
(93
)
Total charge-offs
(899
)
 
(863
)
 
(3,949
)
Recoveries on loans previously charged-off:
 
 
 
 
 
Commercial and industrial
680

 
472

 
3,212

Commercial real estate
2,389

 
4,621

 
6,040

Construction and land
—

 
25

 
1,117

Residential
429

 
47

 
65

Home equity
1

 
—

 
—

Consumer and other
168

 
32

 
27

Total recoveries
3,667

 
5,197

 
10,461

Provision/ (credit) for loan losses:
 
 
 
 
 
Commercial and industrial
4,206

 
(1,095
)
 
(3,424
)
Commercial real estate
(7,140
)
 
(8,213
)
 
157

Construction and land
1,073

 
1,885

 
(4,000
)
Residential
(160
)
 
(665
)
 
445

Home equity
448

 
(200
)
 
(50
)
Consumer and other
(625
)
 
619

 
(63
)
Total provision/(credit) for loan losses
(2,198
)
 
(7,669
)
 
(6,935
)
 
 
 
 
 
 
 
 
 
 
 
 
Allowance for loan losses at December 31 (end of year):
 
 
 
 
 
Commercial and industrial
15,912

 
11,735

 
12,751

Commercial real estate
41,934

 
46,820

 
50,412

Construction and land
6,022

 
4,949

 
3,039

Residential
10,026

 
9,773

 
10,449

Home equity
1,284

 
835

 
1,035

Consumer and other
134

 
630

 
391

Total allowance for loan losses at December 31 (end of year)
$
75,312

 
$
74,742

 
$
78,077



The allowance for loan losses is an estimate of the inherent risk of loss in the loan portfolio as of the consolidated balance sheet dates. Management estimates the level of the allowance based on all relevant information available. Changes to the required level in the allowance result in either a provision for loan loss expense, if an increase is required, or a credit to the provision, if a decrease if required. Loan losses are charged to the allowance when available information confirms that specific loans or portions thereof, are uncollectable. Recoveries on loans previously charged-off are credited to the allowance when received in cash or when the Bank takes possession of other assets.
The provision/ (credit) for loan losses and related balance in the allowance for loan losses for tax-exempt commercial and industrial loans are included with commercial and industrial. The provision/ (credit) for loan losses and related balance in the allowance for loan losses for tax-exempt commercial real estate loans are included with commercial real estate. There were no charge-offs or recoveries, for any period presented, for both commercial and industrial and commercial real estate tax-exempt loans.
The following tables present the Company’s allowance for loan losses and loan portfolio at December 31, 2018 and 2017 by portfolio segment, disaggregated by method of impairment analysis. The Company had no loans acquired with deteriorated credit quality at December 31, 2018 or 2017.
 
December 31, 2018
 
Individually Evaluated
for Impairment
 
Collectively Evaluated
for Impairment
 
Total
 
Recorded
investment
(loan balance)
 
Allowance
for loan
losses
 
Recorded
investment
(loan balance)
 
Allowance
for loan
losses
 
Recorded
investment
(loan balance)
 
Allowance
for loan
losses
 
(In thousands)
Commercial and industrial
$
3,205

 
$
598

 
$
1,071,503

 
$
15,314

 
$
1,074,708

 
$
15,912

Commercial real estate
546

 
—

 
2,395,146

 
41,934

 
2,395,692

 
41,934

Construction and land
—

 
—

 
240,306

 
6,022

 
240,306

 
6,022

Residential
9,183

 
75

 
2,939,790

 
9,951

 
2,948,973

 
10,026

Home equity
2,709

 
562

 
87,712

 
722

 
90,421

 
1,284

Consumer and other
—

 
—

 
143,058

 
134

 
143,058

 
134

Total
$
15,643

 
$
1,235

 
$
6,877,515

 
$
74,077

 
$
6,893,158

 
$
75,312

 
December 31, 2017
 
Individually Evaluated
for Impairment
 
Collectively Evaluated
for Impairment
 
Total
 
Recorded
investment
(loan balance)
 
Allowance
for loan
losses
 
Recorded
investment
(loan balance)
 
Allowance
for loan
losses
 
Recorded
investment
(loan balance)
 
Allowance
for loan
losses
 
(In thousands)
Commercial and industrial
$
1,676

 
$
58

 
$
938,014

 
$
11,677

 
$
939,690

 
$
11,735

Commercial real estate
8,687

 
362

 
2,431,533

 
46,458

 
2,440,220

 
46,820

Construction and land
109

 
—

 
164,881

 
4,949

 
164,990

 
4,949

Residential
10,165

 
89

 
2,672,368

 
9,684

 
2,682,533

 
9,773

Home equity
1,815

 
20

 
98,143

 
815

 
99,958

 
835

Consumer and other
125

 
125

 
177,512

 
505

 
177,637

 
630

Total
$
22,577

 
$
654

 
$
6,482,451

 
$
74,088

 
$
6,505,028

 
$
74,742