General (Tables)

12 Months Ended

Mar. 31, 2017

Organization Consolidation And Presentation Of Financial Statements [Abstract]

Summary of Ordinary Shares Repurchased

Company bought back 1,801,099 of its ordinary shares in open market transactions, in accordance with a 10b5-1 program, at an average price of $138.80 per share, as represented in the following table.

Period	Total Number of Shares Purchased		Average Price Paid per Share
March 17, 2016 - March 31, 2016		67,339	$	140.30
April 1, 2016 - April 30, 2016		117,515	$	141.46
May 1, 2016 - May 31, 2016		552,474	$	134.86
June 1, 2016 - June 30, 2016		290,298	$	142.32
July 1, 2016 - July 31, 2016		318,080	$	141.28
August 1, 2016 - August 18, 2016		455,393	$	138.71
Total		1,801,099	$	138.80

The table below presents a summary of the ordinary shares repurchased by the Company under the new authorization and classified as treasury stock, as of May 31, 2017, in accordance with a 10b5-1 program:

Period	Total Number of Shares Purchased		Average Price Paid per Share		Total Number of Shares Purchased as Part of the Current Program		Dollar Value of Shares that May Yet Be Purchased Under the Program (in thousands)
November 25, 2016 - November 30, 2016		68,641	$	105.21		68,641
December 1, 2016 - December 31, 2016		242,821	$	104.87		311,462
January 1, 2017 - January 31, 2017		156,353	$	103.33		467,815
February 1, 2017 - February 28, 2017		51,150	$	106.02		518,965
March 1, 2017 - March 31, 2017		—	$	—		518,965
April 1, 2017 - April 30, 2017		—	$	—		518,965
May 1, 2017 - May 31, 2017		34,193	$	105.58		553,158
Total		553,158	$	104.63			$	192,125