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Securities (Tables)
 12 Months Ended
Dec. 31, 2018
Investments, Debt and Equity Securities [Abstract]  
Schedule of Securities Available-for-Sale
The amortized cost, unrealized gross gains and losses recognized in accumulated other comprehensive income (loss), and fair value of Securities Available-for-Sale were as follows:
Securities Available-for-Sale:
 
Amortized Cost
 
Gross Unrealized Gains
 
Gross Unrealized Losses
 
Fair Value
2018
 
 

 
 

 
 

 
 

Obligations of State and Political Subdivisions
 
$
291,449

 
$
4,407

 
$
(1,323
)
 
$
294,533

MBS/CMO – Residential
 
529,805

 
1,029

 
(12,756
)
 
518,078

Total
 
$
821,254

 
$
5,436

 
$
(14,079
)
 
$
812,611

 
 
 
 
 
 
 
 
 
2017
 
 

 
 

 
 

 
 

Obligations of State and Political Subdivisions
 
$
267,437

 
$
6,733

 
$
(861
)
 
$
273,309

MBS/CMO - Residential
 
476,205

 
416

 
(9,289
)
 
467,332

Total
 
$
743,642

 
$
7,149

 
$
(10,150
)
 
$
740,641
Schedule of Securities by Contractual Maturity
The amortized cost and fair value of Securities at December 31, 2018 by contractual maturity are shown below. Expected maturities may differ from contractual maturities because some issuers have the right to call or prepay certain obligations with or without call or prepayment penalties. Mortgage-backed Securities are not due at a single maturity date and are shown separately. 
 
 
Amortized
Cost
 
Fair
Value
Securities Available-for-Sale:
 
 

 
 

Due in one year or less
 
$
2,195

 
$
2,202

Due after one year through five years
 
16,401

 
16,689

Due after five years through ten years
 
82,449

 
84,085

Due after ten years
 
190,404

 
191,557

MBS/CMO - Residential
 
529,805

 
518,078

Total
 
$
821,254

 
$
812,611
Schedule of Proceeds from the Sales of Securities
 
 
2018
 
2017
 
2016
Proceeds from the Sales of Securities are summarized below: 
 
Available-
for-Sale
 
Available-
for-Sale
 
Available-
for-Sale
 
 
 
 
 
 
 
Proceeds from Sales
 
$
91,013

 
$
49,459

 
$
165,102

Gross Gains on Sales
 
706

 
596

 
1,979

 
 
 
 
 
 
 
Income Taxes on Gross Gains
 
148

 
209

 
693
Schedule of Securities with Unrealized Losses
Below is a summary of securities with unrealized losses as of year-end 2018 and 2017, presented by length of time the securities have been in a continuous unrealized loss position: 
 
 
Less than 12 Months
 
12 Months or More
 
Total
 
 
Fair
Value
 
Unrealized
Loss
 
Fair
Value
 
Unrealized
Loss
 
Fair
Value
 
Unrealized
Loss
December 31, 2018
 
 

 
 

 
 

 
 

 
 

 
 

Obligations of State and Political Subdivisions
 
$
37,936

 
$
(286
)
 
$
49,071

 
$
(1,037
)
 
$
87,007

 
$
(1,323
)
MBS/CMO - Residential
 
56,386

 
(601
)
 
356,218

 
(12,155
)
 
412,604

 
(12,756
)
Total
 
$
94,322

 
$
(887
)
 
$
405,289

 
$
(13,192
)
 
$
499,611

 
$
(14,079
)

 
 
Less than 12 Months
 
12 Months or More
 
Total
 
 
Fair
Value
 
Unrealized
Loss
 
Fair
Value
 
Unrealized
Loss
 
Fair
Value
 
Unrealized
Loss
December 31, 2017
 
 

 
 

 
 

 
 

 
 

 
 

Obligations of State and Political Subdivisions
 
$
33,230

 
$
(237
)
 
$
24,161

 
$
(624
)
 
$
57,391

 
$
(861
)
MBS/CMO - Residential
 
172,354

 
(2,048
)
 
250,520

 
(7,241
)
 
422,874

 
(9,289
)
Total
 
$
205,584

 
$
(2,285
)
 
$
274,681

 
$
(7,865
)
 
$
480,265

 
$
(10,150
)