Stock-based Compensation (Tables)

9 Months Ended

Sep. 30, 2016

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

Summary of Restricted Stock Units Activity

RSU activity for the nine months ended September 30, 2016 is summarized as follows:

	Number of Shares		Weighted Average Grant Date Fair Value
Outstanding at December 31, 2015	191,617		$	156.66
Granted	155,361		$	75.72
Forfeited	(8,333	)	$	110.81
Settled	(55,233	)	$	167.34
Outstanding at September 30, 2016	283,412		$	111.56

Summary of Stock Option Activity

Stock option activity for the nine months ended September 30, 2016 is summarized as follows:

	Number of Shares		Weighted Average Exercise Price
Outstanding at December 31, 2015	156,636		$	18.78
Granted	—		$	—
Exercised	(12,729	)	$	33.56
Forfeited	—		$	—
Outstanding at September 30, 2016	143,907		$	17.47