Senior Secured Convertible Notes Payable - Gross principal balances rollforward (Details) $ in Thousands	6 Months Ended
	Feb. 29, 2020 USD ($)
Gross Balance, Beginning	$ 6,808,000
Exchanged for December 2019 Notes	267,000
Conversions to Common Shares	(2,188,000)
Repayments in Cash	(1,240,000)
Gross Balance, Ending	3,647,000
Less Discount and Debt Issuance Costs:
Less Discount and Debt Issuance Costs:	(1,611,000)
Carrying Balance at February 29, 2020	2,036,000
Less Current Amount	(1,427,000)
Long Term Balance at February 29, 2020	609,000
March 2019 [Member]
Gross Balance, Beginning	4,475,000
Exchanged for December 2019 Notes	(2,445,000)
Conversions to Common Shares	(714,000)
Repayments in Cash	(310,000)
Gross Balance, Ending	1,006,000
Less Discount and Debt Issuance Costs:
Less Discount and Debt Issuance Costs:	(400,000)
Carrying Balance at February 29, 2020	606,000
Less Current Amount	(606,000)
December 2019 [Member]
Exchanged for December 2019 Notes	2,934,000
Conversions to Common Shares	(293,000)
Gross Balance, Ending	2,641,000
Less Discount and Debt Issuance Costs:
Less Discount and Debt Issuance Costs:	(1,211,000)
Carrying Balance at February 29, 2020	1,430,000
Less Current Amount	(821,000)
Long Term Balance at February 29, 2020	609,000
June 2018 [Member]
Gross Balance, Beginning	1,466,000
Conversions to Common Shares	(759,000)
Repayments in Cash	(707,000)
December Two Thousand Eighteen Notes [Member]
Gross Balance, Beginning	867,000
Exchanged for December 2019 Notes	(222,000)
Conversions to Common Shares	(422,000)
Repayments in Cash	$ (223,000)