Fair Value Measurements (Tables)

6 Months Ended

Nov. 30, 2018

Fair Value Disclosures [Abstract]

Schedule of Fair Value of Financial Instruments Measured on a Recurring Basis

These financial instruments measured at fair value on a recurring basis are summarized below: 

	As of November 30, 2018
(In thousands)	Level 1		Level 2		Level 3		Fair Value
Cash and cash equivalents	$	88,479	$	—	$	—	$	88,479
Other assets, net:
Interest rate lock agreements	—		2,307		—		2,307
Total assets at fair value	$	88,479	$	2,307	$	—	$	90,786

	As of May 31, 2018
(In thousands)	Level 1		Level 2		Level 3		Fair Value
Cash and cash equivalents	$	138,724	$	—	$	—	$	138,724
Total assets at fair value	$	138,724	$	—	$	—	$	138,724