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SHARE BASED COMPENSATION (Tables)
6 Months Ended
Jun. 30, 2017
Share Based Compensation [Abstract]  
Fair Values of all Options Granted Estimated Using Binomial Option-Pricing Model with Weighted-average Assumptions

The fair values of all of the options granted for the periods indicated have been estimated using a binomial option-pricing model. The weighted-average assumptions for the periods shown are presented in the following table:

Six Months Ended June 30,
20172016
Dividend yield2.45%3.48%
Weighted average expected volatility40.27%41.54%
Weighted average risk-free interest rate2.14%1.42%
Weighted average expected lives (in years)5.675.71
Weighted average grant-date fair value$13.42$7.75
Summary of Share Option Activity

A summary of share option activity for the period indicated is reflected in the following table:

Weighted
NumberWeightedAverageAggregate
ofAverageContractualIntrinsic
CommonExerciseRemainingValue
SharesShare PriceLife (Years)(in thousands)
Balance at January 1, 2017108,503$22.46$1,902
Granted12,941$42.48
Exercised(27,284)$19.00$609
Forfeited or expired(3,577)$30.07
Balance at June 30, 201790,583$26.084.0$1,347
Exercisable at June 30, 201760,098$22.433.0$1,097
Weighted average fair value of options
granted during the year$13.42
Summary of Activity for Company's Non-Vested Options

A summary of the activity for the Company’s restricted stock for the period indicated is presented in the following table:

NumberWeighted
ofAverage
CommonGrant-Date
(In dollars, except share data):SharesFair Value
Restricted stock at January 1, 2017212,646$25.19
Granted55,211$42.48
Vested(70,382)$23.82
Forfeited(7,800)$27.21
Restricted stock at June 30, 2017189,675$30.67