Condensed Consolidated Statements of Equity - USD ($) $ in Millions	Total	Dividends payable	Cash dividends	Common Stock	Additional Paid-in Capital	Retained Earnings	Retained Earnings Dividends payable	Retained Earnings Cash dividends	Accumulated Other Comprehensive Income (Loss)	Non-controlling Interest
Beginning balance at Dec. 31, 2022	$ 616.8			$ 41.4	$ 49.1	$ 534.0			$ (8.0)	$ 0.3
Comprehensive income:
Net income (loss)	(11.3)					(11.3)				0.0
Other comprehensive income (loss), net of tax	0.0								0.0
Dividends		$ (0.6)	$ (28.2)				$ (0.6)	$ (28.2)
Common shares – treasury:
Shares issued under Members’ Stock Purchase Plan and stock awards, net of tax	17.8			0.4	17.3
Shares issued in connection with Kimball International, Inc. acquisition	120.8			4.7	116.1
Ending balance at Jul. 01, 2023	715.3			46.5	182.5	493.9			(8.0)	0.3
Beginning balance at Apr. 01, 2023	613.2			41.7	57.1	522.0			(7.9)	0.3
Comprehensive income:
Net income (loss)	(12.8)					(12.8)				0.0
Other comprehensive income (loss), net of tax	(0.1)								(0.1)
Dividends		(0.3)	(14.9)				(0.3)	(14.9)
Common shares – treasury:
Shares issued under Members’ Stock Purchase Plan and stock awards, net of tax	9.5			0.1	9.4
Shares issued in connection with Kimball International, Inc. acquisition	120.8			4.7	116.1
Ending balance at Jul. 01, 2023	715.3			46.5	182.5	493.9			(8.0)	0.3
Beginning balance at Dec. 30, 2023	761.8			46.9	201.6	523.6			(10.6)	0.3
Comprehensive income:
Net income (loss)	53.7					53.7				0.0
Other comprehensive income (loss), net of tax	1.7								1.7
Dividends		(0.9)	(30.7)				(0.9)	(30.7)
Common shares – treasury:
Shares purchased	(13.6)			(0.3)	(13.2)
Shares issued under Members’ Stock Purchase Plan and stock awards, net of tax	16.2			0.6	15.6
Ending balance at Jun. 29, 2024	788.1			47.1	204.0	545.7			(9.0)	0.3
Beginning balance at Mar. 30, 2024	771.8			47.3	208.1	525.4			(9.3)	0.3
Comprehensive income:
Net income (loss)	36.0					36.0				0.0
Other comprehensive income (loss), net of tax	0.3								0.3
Dividends		$ (0.2)	$ (15.6)				$ (0.2)	$ (15.6)
Common shares – treasury:
Shares purchased	(11.0)			(0.3)	(10.8)
Shares issued under Members’ Stock Purchase Plan and stock awards, net of tax	6.8			0.1	6.7
Ending balance at Jun. 29, 2024	$ 788.1			$ 47.1	$ 204.0	$ 545.7			$ (9.0)	$ 0.3