Fair Value Measurements - Schedule of Assets or Liabilities Measured Fair Value on a Recurring Basis (Details) - Fair Value, Measurements, Recurring - USD ($) $ in Thousands	Aug. 26, 2017	Aug. 27, 2016
Assets:
Cash equivalents	$ 81,253	$ 172,760
Pension plan assets	5,097	4,753
Foreign currency forward contracts		188
Total assets at fair value	86,350	177,701
Liabilities:
Foreign currency forward contracts	177
Total liabilities at fair value	177
Level 1
Assets:
Cash equivalents	81,253	172,760
Pension plan assets	0	0
Foreign currency forward contracts		0
Total assets at fair value	81,253	172,760
Liabilities:
Foreign currency forward contracts	0
Total liabilities at fair value	0
Level 2
Assets:
Cash equivalents	0	0
Pension plan assets	5,097	4,753
Foreign currency forward contracts		188
Total assets at fair value	5,097	4,941
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