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SECURITIES (Tables)
3 Months Ended
Mar. 31, 2017
Investments, Debt and Equity Securities [Abstract]  
Amortized cost and estimated fair value of securities available for sale
Amortized cost and estimated fair value of securities available for sale are as follows (in thousands):
 
 
March 31, 2017
 
 
Amortized Cost
 
Unrealized Gains
 
Unrealized Losses
 
Estimated Fair Value
Obligations of U.S. Government and U.S. Government sponsored enterprises
 
$
17,295

 
$
145

 
$

 
$
17,440

Mortgage-backed securities, residential
 
244,049

 
319

 
4,690

 
239,678

Obligations of states and political subdivisions
 
44,007

 
288

 
140

 
44,155

Corporate bonds and notes
 
248

 
3

 

 
251

SBA loan pools
 
550

 
1

 
1

 
550

Corporate stocks
 
265

 
242

 

 
507

Total
 
$
306,414

 
$
998

 
$
4,831

 
$
302,581


 
 
December 31, 2016
 
 
Amortized Cost
 
Unrealized Gains
 
Unrealized Losses
 
Estimated Fair Value
Obligations of U.S. Government and U.S. Government sponsored enterprises
 
$
17,300

 
$
155

 
$

 
$
17,455

Mortgage-backed securities, residential
 
253,156

 
202

 
7,492

 
245,866

Obligations of states and political subdivisions
 
38,843

 
209

 
312

 
38,740

Corporate bonds and notes
 
249

 
1

 

 
250

SBA loan pools
 
568

 
3

 
1

 
570

Corporate stocks
 
285

 
236

 

 
521

Total
 
$
310,401

 
$
806

 
$
7,805

 
$
303,402

Amortized cost and estimated fair value of securities held to maturity
Amortized cost and estimated fair value of securities held to maturity are as follows (in thousands):
 
 
March 31, 2017
 
 
Amortized Cost
 
Unrealized Gains
 
Unrealized Losses
 
Estimated Fair Value
Obligations of states and political subdivisions
 
$
2,741

 
$
194

 
$

 
$
2,935

Time deposits with other financial institutions
 
980

 

 
3

 
977

Total
 
$
3,721

 
$
194

 
$
3

 
$
3,912


 
 
December 31, 2016
 
 
Amortized Cost
 
Unrealized Gains
 
Unrealized Losses
 
Estimated Fair Value
Obligations of states and political subdivisions
 
$
3,725

 
$
206

 
$

 
$
3,931

Time deposits with other financial institutions
 
980

 
1

 

 
981

Total
 
$
4,705

 
$
207

 
$

 
$
4,912

Amortized cost and estimated fair value of debt securities by contractual maturity
The amortized cost and estimated fair value of debt securities are shown below by expected maturity.  Expected maturities may differ from contractual maturities if borrowers have the right to call or prepay obligations with or without call or prepayment penalties.  Securities not due at a single maturity date are shown separately (in thousands):
 
 
March 31, 2017
 
 
Available for Sale
 
Held to Maturity
 
 
Amortized
Cost
 
Fair
Value
 
Amortized
Cost
 
Fair
Value
Within one year
 
$
8,197

 
$
8,224

 
$
866

 
$
873

After one, but within five years
 
33,091

 
33,411

 
2,583

 
2,729

After five, but within ten years
 
17,184

 
17,168

 
272

 
310

After ten years
 
3,078

 
3,043

 

 

 
 
61,550

 
61,846

 
3,721

 
3,912

Mortgage-backed securities, residential
 
244,049

 
239,678

 

 

SBA loan pools
 
550

 
550

 

 

Total
 
$
306,149

 
$
302,074

 
$
3,721

 
$
3,912

Proceeds from sales and calls of securities resulting in gains or losses
The proceeds from sales and calls of securities resulting in gains or losses for the three months ended March 31, 2017 and 2016 are listed below (in thousands):
 
 
2017
 
2016
Proceeds
 
$

 
$
15,422

Gross gains
 

 
908

Gross losses
 

 

Tax expense
 

 
343


Investment securities available for sale in an unrealized loss position
The following tables summarize the investment securities available for sale with unrealized losses at March 31, 2017 and December 31, 2016 by aggregated major security type and length of time in a continuous unrealized loss position (in thousands):

 
Less than 12 months
 
12 months or longer
 
Total
March 31, 2017
Fair Value
 
Unrealized
Losses
 
Fair Value
 
Unrealized
Losses
 
Fair Value
 
Unrealized
Losses
Mortgage-backed securities, residential
$
220,708

 
$
4,690

 
$

 
$

 
$
220,708

 
$
4,690

Obligations of states and political subdivisions
12,815

 
140

 

 

 
12,815

 
140

SBA loan pools

 

 
219

 
1

 
219

 
1

Total temporarily impaired securities
$
233,523

 
$
4,830

 
$
219

 
$
1

 
$
233,742

 
$
4,831


 
Less than 12 months
 
12 months or longer
 
Total
December 31, 2016
Fair Value
 
Unrealized
Losses
 
Fair Value
 
Unrealized
Losses
 
Fair Value
 
Unrealized
Losses
Mortgage-backed securities, residential
$
233,843

 
$
7,492

 
$

 
$

 
$
233,843

 
$
7,492

Obligations of states and political subdivisions
25,724

 
312

 

 

 
25,724

 
312

SBA loan pools

 

 
225

 
1

 
225

 
1

Total temporarily impaired securities
$
259,567

 
$
7,804

 
$
225

 
$
1

 
$
259,792

 
$
7,805