Stock-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2014

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Schedule of Weighted-Average Assumptions used in Option Pricing Model

The following table presents the weighted-average assumptions used in the option pricing model for the periods indicated:

Years ended December 31,	2013		2012
Expected volatility	30.61	%	37.46	%
Expected dividend yield	3.00	%	3.35	%
Risk-free interest rate	0.88	%	1.99	%
Expected life of options (in years)	5.52		7.85

Schedule of Share-based Compensation, Stock Options, Activity

The following table summarizes stock option activity under the Company’s active stock option plans for the year ended December 31, 2014:

	Number of Shares		Weighted-Average Exercise Price		Weighted-Average Remaining Contract Life
Outstanding options, beginning of year	2,523,593		$	17.20
Granted	—		—
Exercised	(739,290	)	17.73
Forfeited	(5,893	)	12.85
Expired	(30,378	)	16.20
Outstanding options, end of year	1,748,032		$	17.01	4.43 years
Outstanding options exercisable, end of year	1,393,010		$	17.15	4.12 years

Information with respect to the Company’s nonvested stock options as of and for the year ended December 31, 2014 follows:

	Number of Shares		Weighted-Average Grant Date Fair Value
Nonvested stock options, beginning of year	733,906		$	3.78
Granted	—
Vested	(348,506	)	3.94
Forfeited	(30,378	)	3.70
Nonvested stock options, end of year	355,022		$	3.62

Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity

The following table presents information regarding the Company’s restricted stock as of December 31, 2014:

	Number of Shares		Weighted-Average Measurement Date Fair Value
Restricted stock, beginning of year	225,525		$	16.08
Granted	148,278		24.36
Vested	(96,143	)	15.54
Forfeited	(27,772	)	16.43
Canceled	(1,489	)	21.39
Restricted stock, end of year	248,399		$	21.16