Fair Value Measurements (Tables)

3 Months Ended

Aug. 31, 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 August 31, 2018
(In thousands)	Level 1		Level 2		Level 3		Fair Value
Cash and cash equivalents	$	118,356	$	—	$	—	$	118,356
Total assets at fair value	$	118,356	$	—	$	—	$	118,356
Accrued liabilities:
Interest rate lock agreements	$	—	$	4,169	$	—	$	4,169
Total liabilities at fair value	$	—	$	4,169	$	—	$	4,169

	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