Condensed Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Preferred Stock [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	Treasury Stock, Common [Member]	AOCI Attributable to Parent [Member]	Retained Earnings [Member]	Cumulative Preferred Stock [Member]	Cumulative Convertible Preferred Stock [Member]	Participating Convertible Preferred Stock [Member]	Common Class A [Member]	Common Class B [Member]	Total
Balance at Mar. 31, 2024	$ 351	$ 3,050	$ 100,425	$ (200,107)	$ (25,380)	$ 704,554						$ 582,893
Net earnings	0	0	0	0	0	12,661						12,661
Cash dividends declared on preferred stock	0	0	0	0	0	(12)						(12)
Stock issued for profit sharing plan	0	0	7	0	0	0						7
Equity incentive program	0	0	37	0	0	0						37
Purchase treasury stock	0	0	0	(6,640)	0	0						(6,640)
Net earnings	0	0	0	0	0	12,661						12,661
Balance at Jun. 29, 2024	351	3,050	100,469	(206,747)	(25,380)	717,203						588,946
Balance at Mar. 31, 2024	351	3,050	100,425	(200,107)	(25,380)	704,554						582,893
Net earnings												25,964
Purchase treasury stock										$ (10,000)
Net earnings												25,964
Balance at Sep. 28, 2024	351	3,051	100,512	(210,098)	(25,380)	730,506						598,942
Balance at Jun. 29, 2024	351	3,050	100,469	(206,747)	(25,380)	717,203						588,946
Net earnings	0	0	0	0	0	13,303						13,303
Equity incentive program	0	1	43	0	0	0						44
Purchase treasury stock	0	0	0	(3,351)	0	0						(3,351)
Net earnings	0	0	0	0	0	13,303						13,303
Balance at Sep. 28, 2024	351	3,051	100,512	(210,098)	(25,380)	730,506						598,942
Balance at Mar. 31, 2025	346	3,051	102,376	(210,669)	(7,836)	745,755						633,023
Net earnings	0	0	0	0	0	14,885						14,885
Cash dividends declared on preferred stock	0	0	0	0	0	(12)						(12)
Stock issued for profit sharing plan	0	0	3	0	0	0						3
Equity incentive program	0	0	47	0	0	0						47
Purchase treasury stock	0	0	0	(3,774)	0	0						(3,774)
Net earnings	0	0	0	0	0	14,885						14,885
Balance at Jun. 28, 2025	346	3,051	102,426	(214,443)	(7,836)	760,628						644,172
Balance at Mar. 31, 2025	346	3,051	102,376	(210,669)	(7,836)	745,755						633,023
Net earnings												44,624
Purchase treasury stock										$ (4,900)
Net earnings												44,624
Balance at Sep. 27, 2025	331	3,052	102,489	(215,526)	(7,836)	790,367						672,877
Balance at Jun. 28, 2025	346	3,051	102,426	(214,443)	(7,836)	760,628						644,172
Net earnings	0	0	0	0	0	29,739						29,739
Equity incentive program	0	0	49	0	0	0						49
Purchase treasury stock	0	0	0	(1,083)	0	0						(1,083)
Net earnings	0	0	0	0	0	29,739						29,739
Preferred stock conversion	(15)	1	14	0	0	0						0
Balance at Sep. 27, 2025	$ 331	$ 3,052	$ 102,489	$ (215,526)	$ (7,836)	$ 790,367						$ 672,877
Preferred stock, shares authorized (in shares)							200,000	1,400,000	6,602
Common stock, shares authorized (in shares)										20,000,000	10,000,000
Preferred stock, shares outstanding (in shares)							200,000	807,240	6,602
Common stock, shares outstanding (in shares)										5,293,171	1,562,195