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STOCK-BASED COMPENSATION PLANS (Tables)
 12 Months Ended
Dec. 31, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Allocation of Recognized Compensation Expense
Compensation expense recognized in connection with the stock based compensation plans are presented in the following table for the years ended December 31, 2017, 2016, and 2015:

(in thousands)
 
2017
 
2016
 
2015
Stock options and restricted stock awards
 
$
399

 
$
543

 
$
306

Performance stock units
 
290

 
304

 
376

Restricted stock units
 
585

 
431

 
134

Total compensation expense
 
$
1,274

 
$
1,278

 
$
816
Schedule of Fair Value Assumptions
The fair value of options was estimated at the date of grant using the Black-Scholes option-pricing model with the following weighted-average assumptions for stock option grants during the years ended December 31, 2015:

 
 
2015
Risk free interest rate
 
1.16
%
Expected market volatility factor for the Company's stock
 
41.22
%
Dividend yield
 
3.07
%
Expected life of the options (years)
 
6.0

Options granted
 
125,269

Estimated fair value of options granted
 
$
6.49
Summary of Stock Option Activity
Stock Options
 
Number of Stock Options Outstanding
 
Weighted Average Exercise Price
 
Aggregate Intrinsic Value
Outstanding at January 1, 2017
 
236,763

 
$
17.99

 
 
Granted
 
—

 
—

 
 
Exercised
 
(55,725
)
 
15.19

 
 
Forfeited
 
(11,117
)
 
17.38

 
 
Outstanding at December 31, 2017
 
169,921

 
$
18.95

 
$
1,370

 
 
 
 
 
 
 
Ending vested and expected to vest December 31, 2017
 
169,921

 
$
18.95

 
$
1,370

Exercisable at December 31, 2017
 
100,317

 
$
18.66

 
$
838


Stock Options
 
Number of Stock Options Outstanding
 
Weighted Average Exercise Price
 
Aggregate Intrinsic Value
Outstanding at January 1, 2016
 
344,159

 
$
17.56

 
 
Granted
 
—

 
—

 
 
Exercised
 
(85,085
)
 
16.10

 
 
Forfeited
 
(22,311
)
 
18.49

 
 
Outstanding at December 31, 2016
 
236,763

 
$
17.99

 
3,213

 
 
 
 
 
 
 
Ending vested and expected to vest December 31, 2016
 
234,709

 
$
18.04

 
3,173

Exercisable at December 31, 2016
 
90,807

 
$
16.08

 
1,406
Summary of Restricted Stock Awards Activity
Restricted Stock Awards
 
Number of Restricted Stock Awards Outstanding
 
Weighted Average Grant Date Fair Value
Outstanding at January 1, 2017
 
—

 
—

Awarded
 
8,004

 
$
29.96

Vested
 
(8,004
)
 
29.96

Forfeited
 
—

 
—

Outstanding at December 31, 2017
 
—

 
$
—


Restricted Stock Awards
 
Number of Restricted Stock Awards Outstanding
 
Weighted Average Grant Date Fair Value
Outstanding at January 1, 2016
 
—

 
—

Awarded
 
5,190

 
$
28.86

Vested
 
(5,190
)
 
28.86

Forfeited
 
—

 
—

Outstanding at December 31, 2016
 
—

 
$
—
Performance stock units  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Summary of Stock Units Activity
The following table summarizes performance units at target as of December 31, 2017 and 2016:

Performance Stock Units
 
Number of Performance Stock Units Outstanding
 
Weighted Average Grant Date Fair Value
Outstanding at January 1, 2017
 
34,246

 
$
21.25

Awarded
 
17,711

 
26.74

Vested
 
(15,121
)
 
18.84

Forfeited
 
(3,209
)
 
21.51

Outstanding at December 31, 2017
 
33,627

 
$
25.21


Performance Stock Units
 
Number of Performance Stock Units Outstanding
 
Weighted Average Grant Date Fair Value
Outstanding at January 1, 2016
 
36,525

 
$
18.49

Awarded
 
20,351

 
21.02

Vested
 
(20,899
)
 
16.09

Forfeited
 
(1,731
)
 
22.40

Outstanding at December 31, 2016
 
34,246

 
$
21.25
Restricted stock units  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Summary of Stock Units Activity
The following table summarizes restricted stock units activity in 2017 and 2016:
Restricted Stock Units
 
Number of Restricted Stock Units Outstanding
 
Weighted Average Grant Date Fair Value
Outstanding at January 1, 2017
 
40,681

 
$
22.03

Granted
 
57,561

 
28.48

Vested and exercised
 
(12,667
)
 
21.49

Forfeited
 
(11,407
)
 
25.43

Outstanding at December 31, 2017
 
74,168

 
$
26.60


Restricted Stock Units
 
Number of Restricted Stock Units Outstanding
 
Weighted Average Grant Date Fair Value
Outstanding at January 1, 2016
 
38,098

 
$
20.64

Granted
 
17,500

 
23.20

Vested and exercised
 
(12,174
)
 
19.34

Forfeited
 
(2,743
)
 
22.10

Outstanding at December 31, 2016
 
40,681

 
$
22.03