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Share-Based Compensation (Tables)
 12 Months Ended
Dec. 31, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Stock option activity
A summary of the combined activity of the Plans during the years then ended is presented below (dollars in thousands, except per-share amounts):
 
 
Shares
 
Weighted 
Average
Exercise
Price
 
Weighted
Average
Remaining
Contractual
Term (Years)
 
Aggregate
Intrinsic Value
Options outstanding at January 1, 2016
 
240,695

 
$
6.83

 
 
 
 
Options exercised
 
(35,280
)
 
$
6.55

 
 
 
 
Options forfeited
 
(3,200
)
 
$
8.77

 
 
 
 
Options outstanding at December 31, 2016
 
202,215

 
$
6.87

 
3.26
 
$
2,647

Options assumed in acquisition
 
313,360

 
$
11.79

 
 
 
 
Options exercised
 
(281,125
)
 
$
10.47

 
 
 
 

Options forfeited
 
(1,580
)
 
$
8.11

 
 
 
 

Options outstanding at December 31, 2017
 
232,870

 
$
9.13

 
2.87
 
$
2,574

Options exercised
 
(74,030
)
 
$
9.97

 
 
 
 

Options forfeited
 
(4,400
)
 
$
10.85

 
 
 
 

Options outstanding at December 31, 2018
 
154,440

 
$
8.68

 
2.81
 
$
1,554

Options vested or expected to vest at December 31, 2018
 
154,440

 
$
8.68

 
2.81
 
$
1,554

Options exercisable at December 31, 2018
 
154,440

 
$
8.68

 
2.81
 
$
1,554

 
Information related to the stock option plan during each year follows (in thousands):
 
 
2018
 
2017
 
2016
Intrinsic value of options exercised
 
$
767

 
$
2,807

 
$
235

Cash received from options exercised
 
$
738

 
$
2,835

 
$
231

Excess tax benefit realized for option exercises
 
$
142

 
$
805

 
$
30
Restricted stock activity
The following table presents the restricted common stock activity during the years presented: 
 
 
Shares
 
Weighted
Average
Grant Date Fair Value
Nonvested outstanding shares at January 1, 2016
 
53,028

 
$
12.34

Granted
 
54,650

 
$
14.10

Vested
 
(12,438
)
 
$
12.38

Forfeited
 
(1,739
)
 
$
12.95

Nonvested outstanding shares at December 31, 2016
 
93,501

 
$
13.35

Vested
 
(27,373
)
 
$
13.34

Forfeited
 
(2,360
)
 
$
14.07

Nonvested outstanding shares at December 31, 2017
 
63,768

 
$
13.33

Granted
 
22,204

 
$
20.76

Vested
 
(20,733
)
 
$
13.09

Forfeited
 
(1,710
)
 
$
14.37

Nonvested outstanding shares at December 31, 2018
 
63,529

 
$
15.98