Commitments and Contingent Liabilities (Details) (USD $) In Thousands, unless otherwise specified	May 31, 2014
Future minimum rental payments under noncancelable operating leases
Total minimum payments, Remainder of Fiscal 2015	$ 7,166
Total minimum payments, Fiscal 2016	8,822
Total minimum payments, Fiscal 2017	7,041
Total minimum payments, Fiscal 2018	5,492
Total minimum payments, Fiscal 2019	6,983
Total minimum payments, Thereafter	2,933
Total	$ 38,437

Amount of required minimum rental payments for leases having an initial or remaining non-cancelable letter-terms in excess of one year.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 840

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Reference 2: http://www.xbrl.org/2003/role/presentationRef

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Amount of required minimum rental payments maturing in the next fiscal year following the latest fiscal year for operating leases having an initial or remaining non-cancelable letter-terms in excess of one year.

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Amount of required minimum rental payments maturing in the fifth fiscal year following the latest fiscal year for operating leases having an initial or remaining non-cancelable letter-terms in excess of one year.

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Amount of required minimum rental payments maturing in the forth fiscal year following the latest fiscal year for operating leases having an initial or remaining non-cancelable letter-terms in excess of one year.

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Amount of required minimum rental payments maturing in the second fiscal year following the latest fiscal year for operating leases having an initial or remaining non-cancelable letter-terms in excess of one year.

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Amount of required minimum rental payments maturing after the fifth fiscal year following the latest fiscal year for operating leases having an initial or remaining non-cancelable letter-terms in excess of one year.

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