Stock Based Compensation (Tables)

6 Months Ended

Jun. 30, 2017

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

Restricted stock compensation footnote

During the six months ended June 30, 2017, the Company made the following awards of restricted stock:

Date	Shares Granted	Plan	Grant Date Fair Value Per Share		Vesting Period
2/13/2017	1,200	2005 Employee Stock Plan	$	62.53	Ratably over 5 years from grant date
2/16/2017	34,150	2005 Employee Stock Plan	$	63.10	Ratably over 5 years from grant date
3/31/2017	500	2005 Employee Stock Plan	$	65.63	Ratably over 5 years from grant date
4/3/2017	1,500	2005 Employee Stock Plan	$	64.14	Ratably over 5 years from grant date
5/15/2017	1,000	2005 Employee Stock Plan	$	64.03	Ratably over 5 years from grant date
5/23/2017	7,000	2010 Non-Employee Director Stock Plan	$	61.95	At the end of 5 years from grant date (1)
6/15/2017	950	2005 Employee Stock Plan	$	66.18	Ratably over 5 years from grant date

(1) These restricted stock grants will vest at the end of a five year period, or earlier if the director ceases to be a director for any reason other than cause, such as, for example, by retirement.