Other Current Liabilities (Other Current Liabilities) (Details) - USD ($) $ in Thousands	May 31, 2016	Aug. 31, 2015	May 31, 2015
Other Current Liabilities [Abstract]
Compensation and benefits	$ 17,468	$ 16,168	$ 16,031
Deferred revenues	6,876	6,146	9,334
Warranties	6,458	7,271	7,304
Customer deposits	5,497	3,161	3,429
Dealer related liabilities	4,656	5,328	5,287
Income tax payable	3,830	4,034	8,401
Other	10,866	13,997	14,557
Total other current liabilities	$ 55,651	$ 56,105	$ 64,343