Fair Value Measurements - Summary of Assets and Liabilities Measured on a Recurring Basis (Details) - Fair Value, Measurements, Recurring - USD ($) $ in Thousands	Feb. 23, 2019	Aug. 25, 2018
Assets:
Cash equivalents	$ 123,900	$ 103,190
Pension plan assets	5,907	6,325
Foreign currency forward contracts	148	127
Total assets at fair value	129,955	109,642
Level 1
Assets:
Cash equivalents	123,900	103,190
Pension plan assets	0	0
Foreign currency forward contracts	0	0
Total assets at fair value	123,900	103,190
Level 2
Assets:
Cash equivalents	0	0
Pension plan assets	5,907	6,325
Foreign currency forward contracts	148	127
Total assets at fair value	6,055	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