Segment Information (Long-Lived Assets By Country) (Details) - USD ($) $ in Thousands	Aug. 31, 2018	Aug. 31, 2017
Segment Reporting Information [Line Items]
Long-Lived Assets	$ 37,109	$ 36,655
United States/Canada [Member]
Segment Reporting Information [Line Items]
Long-Lived Assets	34,237	33,146
Japan [Member]
Segment Reporting Information [Line Items]
Long-Lived Assets	1,450	2,350
China [Member]
Segment Reporting Information [Line Items]
Long-Lived Assets	581	301
Singapore [Member]
Segment Reporting Information [Line Items]
Long-Lived Assets	315	152
United Kingdom [Member]
Segment Reporting Information [Line Items]
Long-Lived Assets	276	240
Australia [Member]
Segment Reporting Information [Line Items]
Long-Lived Assets	$ 250	$ 466