Fair Value Measurements - Schedule of Assets or Liabilities Measured at Fair Value on a Recurring Basis (Details) - Fair Value, Measurements, Recurring - USD ($) $ in Thousands	Aug. 31, 2019	Aug. 25, 2018
Assets:
Cash equivalents	$ 214,038	$ 103,190
Pension plan assets	4,603	6,325
Foreign currency forward contracts	254	127
Total assets at fair value	218,895	109,642
Level 1
Assets:
Cash equivalents	214,038	103,190
Pension plan assets	0	0
Foreign currency forward contracts	0	0
Total assets at fair value	214,038	103,190
Level 2
Assets:
Cash equivalents	0	0
Pension plan assets	4,603	6,325
Foreign currency forward contracts	254	127
Total assets at fair value	4,857	6,452
Level 3
Assets:
Cash equivalents	0	0
Pension plan assets	0	0
Foreign currency forward contracts	0	0
Total assets at fair value	$ 0	$ 0