Stock-Based Compensation (Tables)

6 Months Ended

Jun. 30, 2017

The following table summarizes the stock option activity for the six months ended June 30, 2017 and 2016:



	Shares		Weighted-Average Exercise Price		Weighted-Average Remaining Contractual Term (In years)	Aggregate Intrinsic Value (In thousands)
Outstanding at December 31, 2015	79,408		$	14.19
Exercised	(25,574	)	14.43
Forfeited or expired	(4,200	)	16.80
Outstanding at June 30, 2016	49,634		$	13.84	3.05	$	185

Outstanding at December 31, 2016	37,495		$	13.77
Exercised	(8,372	)	13.03
Forfeited or expired	(1,308	)	13.53
Outstanding, vested and expected to vest and exercisable at June 30, 2017	27,815		$	14.00	2.63	$	348

The following table summarizes the restricted stock award activity for the six months ended June 30, 2017 and 2016:



	Shares		Weighted-Average Grant Date Fair Value
Nonvested at December 31, 2015	264,521		$	15.92
Granted	119,383		17.52
Vested	(96,009	)	15.83
Forfeited	(4,221	)	16.38
Nonvested at June 30, 2016	283,674		$	16.62

Nonvested at December 31, 2016	261,296		$	16.80
Granted	—		—
Vested	(105,972	)	16.47
Forfeited	(7,704	)	16.78
Nonvested at June 30, 2017	147,620		$	17.04

The following table summarizes the restricted stock unit activity for the six months ended June 30, 2017:



	Shares		Weighted-Average Grant Date Fair Value
Nonvested at December 31, 2016	—		$	—
Granted	92,019		25.29
Vested	—		—
Forfeited	(909	)	25.35
Nonvested at June 30, 2017	91,110		$	25.29

The following table summarizes the assumptions used in the Monte Carlo model for restricted stock unit grants with market-based conditions:



Grant Period Ending	Expected Term in Years	Weighted-Average Risk Free Interest Rate		Expected Volatility		Expected Dividend Yield		Weighted-Average Fair Value
June 30, 2017	2.85	1.40	%	21.8	%	—	%	$	24.39