Warranty (Details) - USD ($) $ in Thousands		12 Months Ended
	Jan. 01, 2013	Jan. 31, 2022	Jan. 31, 2021
Warranty [Line Items]
Product warranty period	10 years
Warranty claim activity
Beginning accrued warranty balance		$ 700	$ 800
Provision		370	380
Benefits from prior years		(340)	(325)
Costs incurred		(130)	(155)
Ending accrued warranty balance		$ 600	$ 700
Minimum
Warranty [Line Items]
Product warranty period		10 years
Maximum
Warranty [Line Items]
Product warranty period		10 years