Stock-Based Awards - Stock Options (Details) - Stock Options	6 Months Ended
	Jul. 28, 2018 $ / shares shares
Stock Options, Outstanding [Roll Forward]
Beginning balance (in shares) | shares	636,730
Granted (in shares) | shares	28,796
Options exercised (in shares) | shares	(34,442)
Canceled (in shares) | shares	0
Ending balance (in shares) | shares	631,084
Exercisable options (in shares) | shares	515,065
Stock Options, Outstanding, Weighted Average Exercise Price [Roll Forward]
Beginning balance (in dollars per shares) | $ / shares	$ 27.93
Options granted (in dollars per shares) | $ / shares	106.19
Options exercised (in dollars per shares) | $ / shares	11.05
Canceled (in dollars per shares) | $ / shares	0.00
Ending balance (in dollars per shares) | $ / shares	32.43
Weighted average remaining contractual life, shares exercisable (In years) | $ / shares	$ 22.34