Stock Plans (Tables)

12 Months Ended

Dec. 31, 2015

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

Share Based Compensation Activity

A summary of stock option activity under the Company’s equity incentive plans as of December 31, 2015 and changes during the year ended December 31, 2015 is presented below:

Stock Options	Number of Shares			Weighted Average Exercise Price
Outstanding at January 1, 2015		282,302		$	30.88
Granted		—			—
Exercised		(75,492	)		34.48
Canceled		(301	)		40.33
Outstanding at December 31, 2015		206,509			29.55
Exercisable at December 31, 2015		157,417			31.15

A summary of the status of the Company’s Restricted Stock Awards as of December 31, 2015 and changes during the year ended December 31, 2015, is presented below:

Restricted Stock Awards	Shares			Weighted Average Grant-Date Fair Value
Nonvested shares at January 1, 2015		589,863		$	36.61
Granted		202,175			57.21
Vested		(250,924	)		32.90
Canceled		(775	)		50.23
Nonvested shares at December 31, 2015		540,339			43.05