Basis of Presentation (Tables)

3 Months Ended

Mar. 31, 2016

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Summary of Assumptions for Options Issued

The assumptions for options issued during the three months ended 2016 and 2015 are presented below:

	2016	2015
Expected term (in years)	5.3	4.9
Volatility	29.6%	25.0%
Weighted-average risk-free interest rate	1.24%	1.54%
Dividend yield	0.80%	0.76%

Summary of Stock Options Outstanding

The following table provides information about our stock options outstanding as of March 31, 2016:

	March 31, 2016
	Shares			Weighted- Average Exercise Price
Stock Options:
Outstanding at beginning of period		1,647,878		$	17.08
Granted		67,591			29.86
Exercised		(60,770	)		15.52
Forfeited		(2,622	)		14.75
Outstanding at end of period		1,652,077			17.67
Exercisable at end of period		901,777			16.53
Weighted-average fair value of awards granted	$	7.84

Schedule of Nonvested Stock Option Outstanding

The following table provides information about our nonvested stock options outstanding at March 31, 2016:

	March 31, 2016
	Shares			Weighted- Average Exercise Price
Stock Options:
Unvested at beginning of period		1,028,142		$	17.58
Granted		67,591			29.86
Forfeited		(1,461	)		14.97
Vested		(343,972	)		16.83
Unvested at end of period		750,300		$	19.03

Schedule of RSAs and RSUs

The following table summarizes the Company’s RSAs and RSUs, including performance awards, and changes during the three months ended March 31, 2016:

	March 31, 2016
				Weighted Average
	Units (in whole)			Grant-Date Fair Value per Unit
Outstanding at beginning of period		171,834		$	19.00
Granted		44,186			29.86
Vested		(71,932	)		16.45
Forfeited		(402	)		25.17
Outstanding at end of period		143,686		$	23.60