Accumulated Other Comprehensive Income (Loss) and Shareholders' Equity - Share Repurchase (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Jan. 01, 2022	Jan. 02, 2021	Dec. 28, 2019
Class of Stock [Line Items]
Purchase of HNI Corporation common stock	$ 59,167	$ 6,764	$ 83,887
Common Stock
Class of Stock [Line Items]
Stock repurchased during period (shares)	1,515,067	214,200	2,286,200
Average price of shares repurchased during period (in dollars per share)	$ 39.89	$ 29.83	$ 36.70
Cash purchase price	$ (60,436)	$ (6,390)	$ (83,907)
Purchases unsettled as of year end	1,269	0	374
Prior year purchases settled in current year	0	(374)	(354)
Purchase of HNI Corporation common stock	$ 59,167	$ 6,764	$ 83,887