Debt (Tables)

6 Months Ended

Nov. 30, 2014

Debt Disclosure [Abstract]

Schedule of Debt

The following table summarizes the carrying value of the Company's debt as of the dates indicated:

	November 30, 2014			May 31, 2014			November 30, 2013
Loan Agreement:
Revolving Loan (interest rates of 1.4%, 1.3%       and n/a, respectively)	$	95.0		$	120.0		$	—
Unsecured lines of credit (weighted average interest      rates of 3.9%, 2.3% and 5.1%, respectively)	$	9.2		$	15.8		$	9.6
Total debt	$	104.2		$	135.8		$	9.6
Less lines of credit, short-term debt and current     portion of long-term debt	(9.2		)	(15.8		)	(9.6		)
Total long-term debt	$	95.0		$	120.0		$	—

Schedule of Maturities of Long-term Debt

The following table sets forth the maturities of the Company’s debt obligations as of November 30, 2014, for the twelve-month periods ending November 30,

2015	$	9.2
2016	$	—
2017	$	—
2018	$	95.0
Total debt	$	104.2