Warranty (Tables)

3 Months Ended

Aug. 31, 2014

Guarantees [Abstract]

Reconciliation of Accrued Warranty and Related Expenses

A reconciliation of accrued warranty and related expenses is as follows:

	Three-Months Ended August 31,
	2014			2013
	(Dollars in thousands)
Balance at the beginning of the period	$	5,697		$	5,882
Accruals for warranties		1,695			1,298
Settlements made during the period		(1,731	)		(1,181	)
Balance at the end of the period		5,661			5,999
Non-current balance included in other deferred liabilities		2,000			2,200
Accrued warranty and related expenses	$	3,661		$	3,799