Share Repurchase Program (Tables)

12 Months Ended

Dec. 31, 2013

Proceeds from (Repurchase of) Equity [Abstract]

Schedule of shares repurchased

	For the Year Ended December 31,
	2013		2012
Shares repurchased	8,529		16,201
Average price per share	$	109.38	$	89.20
Total investment	$	932,900	$	1,445,044