Common Stock

12 Months Ended

Dec. 31, 2017

Equity [Abstract]

Common Stock

Common Stock

There were approximately 3,691 and 3,693 common shares outstanding at December 31, 2017 and 2016, respectively. The Company made the following share repurchases during the years indicated:

	Year Ended December 31,
	2017		2016		2015
Aggregate purchase price	$	422,166	$	455,351	$	431,367
Number of shares repurchased	167		280		290

The Company issues shares from the treasury account for all equity plan activity. The Company issued 165, 83 and 131 such shares during 2017, 2016 and 2015, respectively.