Long-Term Debt (Tables)

12 Months Ended

May. 31, 2015

Debt Disclosure [Abstract]

Future minimum principal payments on long-term debt

As of May 31, 2015, future minimum principal payments on long-term debt were as follows (in thousands):

2016	$	8,750
2017	13,750
2018	26,250
2019	88,910
2020	—
	$	137,660