Income Taxes - Significant Components of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Aug. 31, 2020	Aug. 31, 2019
Deferred tax assets:
Depreciation on property, equipment and leasehold improvements	$ 0	$ 2,264
Deferred rent	0	9,479
Lease liabilities	56,280	0
Stock-based compensation	16,341	14,822
Unrealized tax loss on investment	4,172	0
Other	8,840	9,903
Total deferred tax assets	85,633	36,468
Deferred tax liabilities:
Depreciation on property, equipment and leasehold improvements	15,291	0
Purchased intangible assets, including acquired technology	43,088	44,304
Lease right-of-use assets	45,344	0
Other	1,623	984
Total deferred tax liabilities	$ 105,346	$ 45,288