Stockholder's Equity (Tables)

3 Months Ended

Mar. 31, 2020

Equity [Abstract]

Share Grants Activity

The following table represents the share grants activity for the three months ended March 31, 2020: 

	Restricted stock				Options
	Number of shares		Weighted average grant date fair value		Number of shares	Weighted average grant date fair value
Share grants outstanding as of December 31, 2019	534,331		$	71.01	98,756	$	40.71
Granted	130,275		123.01		—	—
Vested or exercised	(163,923	)	121.65		—	—
Share grants outstanding as of March 31, 2020	500,683		$	87.67	98,756	$	40.71

Shares of Common Stock Issued Under Employee Stock Purchase Plan

The table below details the shares of common stock issued during 2020: 

	Number of shares	Per share price
Shares available as of December 31, 2019	132,449
Shares issued during the three months ended March 31, 2020	4,663	$	130.87
Shares available as of March 31, 2020	127,786