Share-Based Arrangements (Tables)

9 Months Ended

Sep. 29, 2017

Stock option activity was as follows:



	For the Three Months Ended				For the Nine Months Ended
	September 29, 2017				September 29, 2017
	Options		Weighted - average exercise price		Options		Weighted - average exercise price
Options outstanding at beginning of period	992,779		$	39.89	958,679		$	36.18
Granted	—		$	—	226,315		$	51.97
Exercised	(3,983	)	$	39.68	(150,727	)	$	33.36
Forfeited or expired	(9,981	)	$	42.48	(55,452	)	$	43.34
Options outstanding at September 29, 2017	978,815		$	39.86	978,815		$	39.86

Fair Value Assumptions

The fair value of each option award is estimated on the date of grant using the Black-Scholes option valuation model. The following table indicates the weighted-average assumptions used in estimating fair value:



	For the Nine Months Ended
	September 29, 2017			September 30, 2016
Expected option term (years)	5.0			5.2
Expected volatility	19.9		%	26.0		%
Risk-free interest rate	1.9		%	1.2		%
Expected dividend yield	1.6		%	1.8		%
Per share fair value of options granted		$8.61			$8.63

Restricted Stock Award and Restricted Stock Unit Activity

Restricted Stock Award and Restricted Stock Unit activity was as follows:



	For the Three Months Ended				For the Nine Months Ended
	September 29, 2017				September 29, 2017
	Restricted Stock		Weighted- average grant date fair value		Restricted Stock		Weighted- average grant date fair value
Restricted Stock outstanding at beginning of period	160,481		$	44.13	167,674		$	40.27
Granted	1,000		$	50.85	76,008		$	50.01
Vested	(2,269	)	$	43.85	(73,611	)	$	41.56
Forfeited or expired	(2,550	)	$	41.97	(13,409	)	$	42.32
Restricted Stock outstanding at September 29, 2017	156,662		$	44.21	156,662		$	44.21