Allowance for Loan Losses (Tables)
 12 Months Ended
Dec. 31, 2014
Receivables [Abstract]  
Schedule of Credit Losses Related to Financing Receivables, Current and Noncurrent [Table Text Block]
A summary of changes in the allowance for loan losses, by loan portfolio segment, for the years ended December 31, 2014, 2013, and 2012 follows in the tables below. 
 
 
For the Year Ended December 31, 2014
(in thousands)
 
Commercial
 
Construction
 
Consumer
 
Mortgage
 
Covered
 
Acquired, Non-covered
 
Unallocated
 
Total
Beginning balance
 
$
17,348

 
$
2,044

 
$
6,410

 
$
3,376

 
$
3,331

 
$
278

 
$
897

 
$
33,684

Charge-offs
 
(5,440
)
 
(361
)
 
(4,303
)
 
(180
)
 
(766
)
 
(94
)
 
—

 
(11,144
)
Recoveries
 
33

 
2,219

 
1,424

 
76

 
627

 
59

 
—

 
4,438

Net (charge-offs)/recoveries
 
(5,407
)
 
1,858

 
(2,879
)
 
(104
)
 
(139
)
 
(35
)
 
—

 
(6,706
)
Decrease in FDIC indemnification asset
 
—

 
—

 
—

 
—

 
(2,059
)
 
—

 
—

 
(2,059
)
Provision for loan losses (1)
 
1,026

 
(2,416
)
 
2,769

 
(21
)
 
(578
)
 
(83
)
 
(166
)
 
531

Ending balance
 
$
12,967

 
$
1,486

 
$
6,300

 
$
3,251

 
$
555

 
$
160

 
$
731

 
$
25,450

 
 
For the Year Ended December 31, 2013
(in thousands)
 
Commercial
 
Construction
 
Consumer
 
Mortgage
 
Covered
 
Acquired, Non-covered
 
Unallocated
 
Total
Beginning balance
 
$
13,965

 
$
7,578

 
$
6,135

 
$
3,122

 
$
1,964

 
$
188

 
$
1,030

 
$
33,982

Charge-offs
 
(3,820
)
 
(303
)
 
(4,993
)
 
(634
)
 
(300
)
 
(30
)
 
—

 
(10,080
)
Recoveries
 
425

 
682

 
1,757

 
106

 
195

 
—

 
—

 
3,165

Net (charge-offs)/recoveries
 
(3,395
)
 
379

 
(3,236
)
 
(528
)
 
(105
)
 
(30
)
 
—

 
(6,915
)
Increase in FDIC indemnification asset
 
—

 
—

 
—

 
—

 
1,177

 
—

 
—

 
1,177

Provision for loan losses (1)
 
6,778

 
(5,913
)
 
3,511

 
782

 
295

 
120

 
(133
)
 
5,440

Ending balance
 
$
17,348

 
$
2,044

 
$
6,410

 
$
3,376

 
$
3,331

 
$
278

 
$
897

 
$
33,684


 
 
For the Year Ended December 31, 2012
(in thousands)
 
Commercial
 
Construction
 
Consumer
 
Mortgage
 
Covered
 
Acquired, Non-covered
 
Unallocated
 
Total
Beginning balance
 
$
9,183

 
$
8,262

 
$
6,040

 
$
2,535

 
$
—

 
$
—

 
$
1,936

 
$
27,956

Charge-offs
 
(1,080
)
 
(3,476
)
 
(4,410
)
 
(653
)
 
(2,630
)
 
(77
)
 
—

 
(12,326
)
Recoveries
 
61

 
678

 
1,193

 
21

 
—

 
—

 
—

 
1,953

Net (charge-offs)/recoveries
 
(1,019
)
 
(2,798
)
 
(3,217
)
 
(632
)
 
(2,630
)
 
(77
)
 
—

 
(10,373
)
Increase in FDIC indemnification asset
 
—

 
—

 
—

 
—

 
2,979

 
—

 
—

 
2,979

Provision for loan losses (1)
 
5,801

 
2,114

 
3,312

 
1,219

 
1,615

 
265

 
(906
)
 
13,420

Ending balance
 
$
13,965

 
$
7,578

 
$
6,135

 
$
3,122

 
$
1,964

 
$
188

 
$
1,030

 
$
33,982


(1) Net of benefit attributable to FDIC indemnification asset
Summary of Changes in the Allowance for Loan Losses
The following tables present, by portfolio segment, the balance in the allowance for loan losses disaggregated on the basis of the Company’s impairment measurement method and the related recorded investment in loans as of December 31, 2014 and 2013.
 
 
December 31, 2014
(in thousands)
 
Commercial
 
Construction
 
Consumer
 
Mortgage
 
Acquired, Covered and Non-covered
 
Unallocated
 
Total
Individually evaluated for impairment
 
$
2,633

 
$
278

 
$
305

 
$
1,211

 
$
—

 
$
—

 
$
4,427

Collectively evaluated for impairment
 
10,334

 
1,208

 
5,995

 
2,040

 
—

 
731

 
20,308

Acquired with deteriorated credit quality
 
—

 
—

 
—

 
—

 
715

 
—

 
715

Total allowance for loan losses
 
$
12,967

 
$
1,486

 
$
6,300

 
$
3,251

 
$
715

 
$
731

 
$
25,450

Individually evaluated for impairment
 
$
40,073

 
$
7,476

 
$
2,365

 
$
5,205

 
$
—

 
$
—

 
$
55,119

Collectively evaluated for impairment
 
595,833

 
112,652

 
1,228,333

 
224,085

 
—

 
—

 
2,160,903

Acquired with deteriorated credit quality
 
23,005

 
3,866

 
1,906

 
8,507

 
—

 
—

 
37,284

Total loans
 
$
658,911

 
$
123,994

 
$
1,232,604

 
$
237,797

 
$
—

 
$
—

 
$
2,253,306

 
 
December 31, 2013
(in thousands)
 
Commercial
 
Construction
 
Consumer
 
Mortgage
 
Acquired, Covered and Non-covered
 
Unallocated
 
Total
Individually evaluated for impairment
 
$
4,644

 
$
625

 
$
315

 
$
1,540

 
$
—

 
$
—

 
$
7,124

Collectively evaluated for impairment
 
12,704

 
1,419

 
6,095

 
1,836

 
—

 
897

 
22,951

Acquired with deteriorated credit quality
 
—

 
—

 
—

 
—

 
3,609

 
—

 
3,609

Total allowance for loan losses
 
$
17,348

 
$
2,044

 
$
6,410

 
$
3,376

 
$
3,609

 
$
897

 
$
33,684

Individually evaluated for impairment
 
$
39,527

 
$
11,766

 
$
2,963

 
$
3,840

 
$
—

 
$
—

 
$
58,096

Collectively evaluated for impairment
 
586,215

 
81,163

 
984,572

 
121,115

 
—

 
—

 
1,773,065

Acquired with deteriorated credit quality
 
40,060

 
8,769

 
3,050

 
9,997

 
—

 
—

 
61,876

Total loans
 
$
665,802

 
$
101,698

 
$
990,585

 
$
134,952

 
$
—

 
$
—

 
$
1,893,037