Fair Value Measurements (Details) - Fair Value, Measurements, Recurring - USD ($) $ in Thousands	Nov. 25, 2017	Aug. 26, 2017
Assets:
Cash equivalents	$ 78,952	$ 81,253
Pension plan assets	5,048	5,097
Total assets at fair value	84,000	86,350
Liabilities:
Foreign currency forward contracts	36	177
Total liabilities at fair value	36	177
Level 1
Assets:
Cash equivalents	78,952	81,253
Pension plan assets	0	0
Total assets at fair value	78,952	81,253
Liabilities:
Foreign currency forward contracts	0	0
Total liabilities at fair value	0	0
Level 2
Assets:
Cash equivalents	0	0
Pension plan assets	5,048	5,097
Total assets at fair value	5,048	5,097
Liabilities:
Foreign currency forward contracts	36	177
Total liabilities at fair value	36	177
Level 3
Assets:
Cash equivalents	0	0
Pension plan assets	0	0
Total assets at fair value	0	0
Liabilities:
Foreign currency forward contracts	0	0
Total liabilities at fair value	$ 0	$ 0