Share Repurchase Program (Tables)

3 Months Ended

Mar. 31, 2015

Proceeds from (Repurchase of) Equity [Abstract]

Schedule of shares repurchased

	For the Three Months Ended   March 31,
	2015		2014
Shares repurchased	650		149
Average price per share	$	207.50	$	148.18
Total investment	$	134,803	$	22,065