Fair Value Measurements - Additional Information (Details)	Oct. 28, 2017 USD ($)
Fair Value Disclosures [Abstract]
Fair value assets transfers into level one, level two, level three	$ 0
Fair value assets transfers out of level one, level two, level three	0
Fair value liabilities transfers into level one, level two, level three	0
Fair value liabilities transfers out of level, one level, two level three	$ 0