Marketable Securities (Tables)

6 Months Ended

Feb. 29, 2020

Investments, Debt and Equity Securities [Abstract]

Schedule of marketable securities include investments in equity securities

	February 29, 2020		August 31, 2019
Short-term:
D.N.A (see b below)	$	373	$	557
Entera (see c below)		367		304
Held to maturity bonds (see d below)		1,764		2,840
Mutual funds		3,200		-
	$	5,704	$	3,701
Long-term:
Held to maturity bonds (see d below)	$	250	$	1,295

Schedule of amortized cost and estimated fair value of held-to-maturity securities

	February 29, 2020
	Amortized cost		Gross unrealized gains		Estimated fair value
Short-term:
Commercial bonds	$	1,748		8		1,756
Accrued interest		16		-		16
Long-term		250		-		250
	$	2,014		8		2,022

	August 31, 2019
	Amortized cost		Gross unrealized gains		Estimated fair value
Short-term:
Commercial bonds	$	2,808	$	6	$	2,814
Accrued interest		32		-		32
Long-term		1,295		4		1,299
	$	4,135	$	10	$	4,145