Stock-based Compensation (Tables)

9 Months Ended

Sep. 30, 2014

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

Summary of Restricted Stock Units Activity

RSU activity for the nine months ended September 30, 2014 is summarized as follows:

	Number of Shares			Weighted Average Grant Date Fair Value
Outstanding at December 31, 2013		233,763		$	87.97
Granted		76,387		$	184.31
Forfeited		(10,966	)	$	132.15
Settled		(117,914	)	$	60.91
Outstanding at September 30, 2014		181,270		$	143.50

Summary of Stock Option Activity

Stock option activity for the nine months ended September 30, 2014 is summarized as follows:

	Number of Shares			Weighted Average Exercise Price
Outstanding at December 31, 2013		190,160		$	20.11
Granted		—		$	—
Exercised		(22,912	)	$	29.42
Forfeited		—		$	—
Outstanding at September 30, 2014		167,248		$	18.83