Fair Value Measurements - Schedule of Assets or Liabilities Measured Fair Value on a Recurring Basis (Details) - Fair Value, Measurements, Recurring - USD ($) $ in Thousands	Aug. 25, 2018	Aug. 26, 2017
Assets:
Cash equivalents	$ 103,190	$ 81,253
Pension plan assets	6,325	5,097
Foreign currency forward contracts	127
Total assets at fair value	109,642	86,350
Liabilities:
Foreign currency forward contracts		177
Total liabilities at fair value		177
Level 1
Assets:
Cash equivalents	103,190	81,253
Pension plan assets	0	0
Foreign currency forward contracts	0
Total assets at fair value	103,190	81,253
Liabilities:
Foreign currency forward contracts		0
Total liabilities at fair value		0
Level 2
Assets:
Cash equivalents	0	0
Pension plan assets	6,325	5,097
Foreign currency forward contracts	127
Total assets at fair value	6,452	5,097
Liabilities:
Foreign currency forward contracts		177
Total liabilities at fair value		177
Level 3
Assets:
Cash equivalents	0	0
Pension plan assets	0	0
Foreign currency forward contracts	0
Total assets at fair value	$ 0	0
Liabilities:
Foreign currency forward contracts		0
Total liabilities at fair value		$ 0