Stock-Based Awards - Stock Options (Details) - Stock Options	3 Months Ended
	Apr. 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	(5,084)
Canceled (in shares) | shares	0
Ending balance (in shares) | shares	660,442
Exercisable options (in shares) | shares	544,423
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	13.15
Canceled (in dollars per shares) | $ / shares	0.00
Ending balance (in dollars per shares) | $ / shares	31.46
Weighted average remaining contractual life, shares exercisable (In years) | $ / shares	$ 21.71