Assets Held for Sale (Details) - USD ($) $ in Thousands	Nov. 30, 2019	Aug. 31, 2019
Assets held for sale
Assets held for sale	$ 1,064	$ 1,064
Pawtucket, RI manufacturing facility
Assets held for sale
Assets held for sale	1,050	1,050
Randolph, MA - Property
Assets held for sale
Assets held for sale	$ 14	$ 14

Amount classified as assets attributable to disposal group held for sale or disposed of, expected to be disposed of within one year or the normal operating cycle, if longer.

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant