2. STOCK-BASED COMPENSATION (Details 3) - Outstanding Options Stock Option Transactions - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Feb. 28, 2018	Nov. 30, 2017	Aug. 31, 2017
Options Outstanding, Beginning (in thousands)	3,018	3,109	3,074
Options granted (in thousands)	19	41	224
Options cancelled (in thousands)	(13)
Options exercised (in thousand)	(141)	(132)	(189)
Options Outstanding, Ending (in thousands)	2,883	3,018	3,109
Weighted Average Exercise Price Outstanding, Beginning	$ 1.96	$ 1.92	$ 1.73
Weighted Average Exercise Price Granted	2.76	3.46	3.93
Weighted Average Exercise Price Cancelled	2.71
Weighted Average Exercise Price Exercised	0.89	1.46	1.23
Weighted Average Exercise Price Outstanding, Ending	$ 2.01	$ 1.96	$ 1.92
Aggregate Intrinsic Value, beginning balance (in thousands)	$ 2,230	$ 4,612	$ 8,763
Aggregate Intrinsic Value, ending balance (in thousands)	$ 1,486	$ 2,230	$ 4,612
Options fully vested and expected to vest, ending (in thousands)	2,849
Weighted Average Exercise Price for Options fully vested and expected to vest, ending	$ 2.01
Aggregate Intrinsic Value for Options fully vested and expected to vest, ending (in thousands)	$ 1,480