Stock-based Compensation (Tables)

6 Months Ended

Jun. 30, 2015

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

Summary of Restricted Stock Units Activity

RSU activity for the six months ended June 30, 2015 is summarized as follows:

	Number of Shares			Weighted Average Grant Date Fair Value
Outstanding at December 31, 2014		179,936		$	143.25
Granted		78,747		$	139.30
Forfeited		(121	)	$	174.32
Settled		(81,491	)	$	103.28
Outstanding at June 30, 2015		177,071		$	159.87

Summary of Stock Option Activity

Stock Options

Stock option activity for the six months ended June 30, 2015 is summarized as follows:

	Number of Shares			Weighted Average Exercise Price
Outstanding at December 31, 2014		162,824		$	18.79
Granted		—		$	—
Exercised		(3,675	)	$	16.87
Forfeited		—		$	—
Outstanding at June 30, 2015		159,149		$	18.83