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INVESTMENT SECURITIES (Tables)
 6 Months Ended
Jun. 30, 2018
Certain Loans Acquired in Transfer Accounted for as Debt Securities Accretable Yield Movement Schedule [Line Items]  
Schedule of Amortized Cost and Approximate Fair Value of Investment Securities Classified as Available for Sale
The amortized cost and approximate fair value of investment securities classified as AFS are summarized below as of the dates presented (dollars in thousands).
 
 
 
Amortized Cost
 
Gross
Unrealized
Gains
 
Gross
Unrealized
Losses
 
Fair
Value
June 30, 2018
 
 
 
 
Obligations of U.S. government agencies and corporations
 
$
9,285

 
$
3

 
$
(199
)
 
$
9,089

Obligations of state and political subdivisions
 
35,209

 
4

 
(802
)
 
34,411

Corporate bonds
 
19,394

 
88

 
(482
)
 
19,000

Residential mortgage-backed securities
 
126,821

 
69

 
(3,124
)
 
123,766

Commercial mortgage-backed securities
 
56,608

 
45

 
(1,332
)
 
55,321

Total
 
$
247,317

 
$
209

 
$
(5,939
)
 
$
241,587

Proceeds from sales of investment securities AFS and gross gains and losses are summarized below for the periods presented (dollars in thousands).
 
 
Three months ended June 30,
 
Six months ended June 30,
 
 
2018
 
2017
 
2018
 
2017
Proceeds from sale
 
$
—

 
$
8,724

 
$
—

 
$
19,049

Gross gains
 
$
—

 
$
141

 
$
—

 
$
248

Gross losses
 
$
—

 
$
(32
)
 
$
—

 
$
(33
)
Schedule of Amortized Cost and Approximate Fair Value of Investment Securities Classified as Available for Sale
 
 
Amortized Cost
 
Gross
Unrealized
Gains
 
Gross
Unrealized
Losses
 
Fair
Value
December 31, 2017
 
 
 
 
Obligations of U.S. government agencies and corporations
 
$
8,241

 
$
8

 
$
(81
)
 
$
8,168

Obligations of state and political subdivisions
 
35,572

 
87

 
(422
)
 
35,237

Corporate bonds
 
16,428

 
112

 
(330
)
 
16,210

Residential mortgage-backed securities
 
110,690

 
58

 
(1,270
)
 
109,478

Commercial mortgage-backed securities
 
48,299

 
16

 
(686
)
 
47,629

Equity securities
 
847

 
24

 
(29
)
 
842

Total
 
$
220,077

 
$
305

 
$
(2,818
)
 
$
217,564
Schedule of Amortized Cost and Approximate Fair Value of Investment Securities Classified as Held to Maturity
The amortized cost and approximate fair value of investment securities classified as HTM are summarized below as of the dates presented (dollars in thousands). 
 
 
Amortized Cost
 
Gross
Unrealized
Gains
 
Gross
Unrealized
Losses
 
Fair
Value
June 30, 2018
 
 
 
 
Obligations of state and political subdivisions
 
$
11,642

 
$
9

 
$
(52
)
 
$
11,599

Residential mortgage-backed securities
 
5,657

 
—

 
(192
)
 
5,465

Total
 
$
17,299

 
$
9

 
$
(244
)
 
$
17,064

 
 
 
Amortized Cost
 
Gross
Unrealized
Gains
 
Gross
Unrealized
Losses
 
Fair
Value
December 31, 2017
 
 
 
 
Obligations of state and political subdivisions
 
$
11,861

 
$
9

 
$
(15
)
 
$
11,855

Residential mortgage-backed securities
 
6,136

 
4

 
(48
)
 
6,092

Total
 
$
17,997

 
$
13

 
$
(63
)
 
$
17,947
Schedule of Unrealized Losses and Fair Value by Investment Category for Securities Available for Sale
The number of AFS securities, fair value, and unrealized losses, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position, are summarized below as of the dates presented (dollars in thousands).
 
 
 
 
Less than 12 Months
 
12 Months or More
 
Total
 
 
Count
 
Fair Value
 
Unrealized
Losses
 
Fair Value
 
Unrealized
Losses
 
Fair Value
 
Unrealized
Losses
June 30, 2018
 
 
 
 
 
 
 
Obligations of U.S. government agencies and corporations
 
18

 
$
7,167

 
$
(131
)
 
$
1,751

 
$
(68
)
 
$
8,918

 
$
(199
)
Obligations of state and political subdivisions
 
63

 
23,093

 
(404
)
 
9,863

 
(398
)
 
32,956

 
(802
)
Corporate bonds
 
28

 
6,896

 
(70
)
 
5,835

 
(412
)
 
12,731

 
(482
)
Residential mortgage-backed securities
 
206

 
86,094

 
(1,945
)
 
31,571

 
(1,179
)
 
117,665

 
(3,124
)
Commercial mortgage-backed securities
 
95

 
29,397

 
(705
)
 
19,329

 
(627
)
 
48,726

 
(1,332
)
Total
 
410

 
$
152,647

 
$
(3,255
)
 
$
68,349

 
$
(2,684
)
 
$
220,996

 
$
(5,939
)
Schedule of Unrealized Losses and Fair Value by Investment Category for Securities Available for Sale
 
 
 
 
Less than 12 Months
 
12 Months or More
 
Total
 
 
Count
 
Fair Value
 
Unrealized
Losses
 
Fair Value
 
Unrealized
Losses
 
Fair Value
 
Unrealized
Losses
December 31, 2017
 
 
 
 
 
 
 
Obligations of U.S. government agencies and corporations
 
14

 
$
5,815

 
$
(50
)
 
$
1,505

 
$
(31
)
 
$
7,320

 
$
(81
)
Obligations of state and political subdivisions
 
57

 
12,315

 
(77
)
 
9,930

 
(345
)
 
22,245

 
(422
)
Corporate bonds
 
20

 
1,116

 
(6
)
 
6,273

 
(324
)
 
7,389

 
(330
)
Residential mortgage-backed securities
 
159

 
71,893

 
(729
)
 
28,410

 
(541
)
 
100,303

 
(1,270
)
Commercial mortgage-backed securities
 
80

 
30,445

 
(406
)
 
11,216

 
(280
)
 
41,661

 
(686
)
Equity securities
 
1

 
—

 
—

 
478

 
(29
)
 
478

 
(29
)
Total
 
331

 
$
121,584

 
$
(1,268
)
 
$
57,812

 
$
(1,550
)
 
$
179,396

 
$
(2,818
)
Schedule of Weighted Average Tax Equivalent Yield, Amortized Cost and Approximate Fair Value of Investment Debt Securities by Contractual Maturity (Including Mortgage-backed Securities)
The amortized cost and approximate fair value of debt securities, by contractual maturity (including mortgage-backed securities), are shown below as of the dates presented (dollars in thousands). Actual maturities may differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties.
 
 
Amortized
Cost
 
Fair
Value
 
Amortized
Cost
 
Fair
Value
June 30, 2018
 
 
 
 
Due within one year
 
$
3,857

 
$
3,849

 
$
720

 
$
721

Due after one year through five years
 
13,966

 
13,867

 
3,245

 
3,250

Due after five years through ten years
 
34,518

 
33,611

 
1,875

 
1,878

Due after ten years
 
194,976

 
190,260

 
11,459

 
11,215

Total debt securities
 
$
247,317

 
$
241,587

 
$
17,299

 
$
17,064


 
 
Amortized
Cost
 
Fair
Value
 
Amortized
Cost
 
Fair
Value
December 31, 2017
 
 
 
 
Due within one year
 
$
1,319

 
$
1,319

 
$
720

 
$
721

Due after one year through five years
 
15,379

 
15,331

 
3,245

 
3,249

Due after five years through ten years
 
28,242

 
27,833

 
1,875

 
1,878

Due after ten years
 
174,290

 
172,239

 
12,157

 
12,099

Total debt securities
 
$
219,230

 
$
216,722

 
$
17,997

 
$
17,947
Held-to-maturity Securities [Member]  
Certain Loans Acquired in Transfer Accounted for as Debt Securities Accretable Yield Movement Schedule [Line Items]  
Schedule of Unrealized Losses and Fair Value by Investment Category for Securities Held to Maturity
The number of HTM securities, fair value, and unrealized losses, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position, are summarized below as of the dates presented (dollars in thousands).
 
 
 
 
Less than 12 Months
 
12 Months or More
 
Total
 
 
Count
 
Fair Value
 
Unrealized
Losses
 
Fair Value
 
Unrealized
Losses
 
Fair Value
 
Unrealized
Losses
June 30, 2018
 
 
 
 
 
 
 
Obligations of state and political subdivisions
 
1

 
$
5,750

 
$
(52
)
 
$
—

 
$
—

 
$
5,750

 
$
(52
)
Residential mortgage-backed securities
 
9

 
3,172

 
(87
)
 
2,294

 
(105
)
 
5,466

 
(192
)
Total
 
10

 
$
8,922

 
$
(139
)
 
$
2,294

 
$
(105
)
 
$
11,216

 
$
(244
)

 
 
 
 
Less than 12 Months
 
12 Months or More
 
Total
 
 
Count
 
Fair Value
 
Unrealized
Losses
 
Fair Value
 
Unrealized
Losses
 
Fair Value
 
Unrealized
Losses
December 31, 2017
 
 
 
 
 
 
 
Obligations of state and political subdivisions
 
1

 
$
6,007

 
$
(15
)
 
$
—

 
$
—

 
$
6,007

 
$
(15
)
Residential mortgage-backed securities
 
6

 
1,601

 
(3
)
 
2,522

 
(45
)
 
4,123

 
(48
)
Total
 
7

 
$
7,608

 
$
(18
)
 
$
2,522

 
$
(45
)
 
$
10,130

 
$
(63
)