Stock-based Compensation (Tables)

3 Months Ended

Mar. 31, 2015

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

Summary of Restricted Stock Units Activity

RSU activity for the three months ended March 31, 2015 is summarized as follows:

	Number of Shares			Weighted Average Grant Date Fair Value
Outstanding at December 31, 2014		179,936		$	143.25
Granted		70,961		$	141.70
Forfeited		(16	)	$	77.08
Settled		(65,831	)	$	100.54
Outstanding at March 31, 2015		185,050		$	157.85

Summary of Stock Option Activity

Stock option activity for the three months ended March 31, 2015 is summarized as follows:

	Number of Shares			Weighted Average Exercise Price
Outstanding at December 31, 2014		162,824		$	18.79
Granted		—		$	—
Exercised		(3,315	)	$	16.47
Forfeited		—		$	—
Outstanding at March 31, 2015		159,509		$	18.84