Share-Based Compensation - Summary of Activity for Warrants (Details) - $ / shares		12 Months Ended
	Oct. 05, 2016	Jan. 29, 2017
Number of warrant shares
Warrant shares granted (in shares)	1,086,957
Weighted average grant date fair value (per warrant share)
Ending balance (in dollars per share)	$ 0.01
Warrant shares
Number of warrant shares
Beginning balance (in shares)		0
Warrant shares granted (in shares)		1,086,957
Warrant shares vested (in shares)		(109,000)
Ending balance (in shares)		978,000
Weighted average grant date fair value (per warrant share)
Beginning balance (in dollars per share)		$ 0
Warrant shares granted (in dollars per share)		27.74
Warrant shares vested (in dollars per share)		27.74
Ending balance (in dollars per share)		$ 27.74