Shareholders' Equity (Tables)

3 Months Ended

Mar. 31, 2019

Equity [Abstract]

Information with Respect to A Ordinary Shares that were Surrendered or Repurchased

The following table provides information with respect to the A ordinary shares that were surrendered or repurchased during the quarter ended March 31, 2019:

Period (1)	Total Number of Shares Purchased			Average Price Paid Per Share		Total Number of Shares Purchased as Part of Publicly Announced Plan or Program		Approximate Dollar Value of Shares that May Yet Be Purchased Under the Plans or Programs
January 1-31, 2019		7,945	(2)	$	36.23		—		—
February 1-28, 2019		19,083	(2)	$	34.59		—		—
Total		27,028		$	35.07		—

(1) Based on settlement date.

(2) Surrendered by employees as payment of taxes withheld on the vesting of restricted stock.

The following table provides information with respect to the A ordinary shares that were surrendered or repurchased during the quarter ended March 31, 2018:

Period (1)	Total Number of Shares Purchased			Average Price Paid Per Share		Total Number of Shares Purchased as Part of Publicly Announced Plan or Program	Approximate Dollar Value of Shares that May Yet Be Purchased Under the Plans or Programs
January 1-31, 2018		26,639	(2)	$	42.02	—	—
March 1-31, 2018		18,594	(2)	$	37.27	—	—
Total		45,233		$	40.07	—

(1) Based on settlement date.

(2) Surrendered by employees as payment of taxes withheld on the vesting of restricted stock.