Note F - Business Segments - Revenues by Segment (Details) - USD ($) $ in Thousands	3 Months Ended
	Sep. 26, 2025	Sep. 27, 2024	Jun. 30, 2025
Net sales	$ 79,996	$ 72,897
Intra-segment sales	0	0
Inter-segment sales	0	0
Total consolidated net sales	79,996	72,897
Cost of goods sold	57,062	53,575
Intra-segment cost of goods sold	0	0
Inter-segment cost of goods sold	0	0
Total consoldiated cost of goods sold	57,062	53,575
Gross profit	22,934	19,322
Marketing, engineering and administrative expenses	20,699	19,487
Income (loss) from operations	2,235	(165)
Interest income	19	39
Interest expense	(800)	(636)
Other income (expense)	(883)	(1,383)
Total consolidated other income (expense)	(1,664)	(1,980)
Pretax earnings (loss)	571	(2,145)
Income tax benefit (expense)	(983)	(627)
Net income (loss)	(412)	(2,772)
Minority interest	106	(7)
Net income (loss) attributable to Twin Disc, Incorporated	(518)	(2,765)
Total consolidated assets	363,536	323,547	$ 355,562
Depreciation and amortization	3,464	3,238
Expenditures for segment assets	3,430	2,362
Operating Segments [Member] | Manufacturing Segment [Member]
Net sales	74,054	63,318
Intra-segment sales	(2,047)	(858)
Inter-segment sales	(9,874)	(12,695)
Total consolidated net sales	62,133	49,765
Cost of goods sold	55,770	50,038
Intra-segment cost of goods sold	(2,047)	(858)
Inter-segment cost of goods sold	(9,874)	(12,695)
Total consoldiated cost of goods sold	43,849	36,485
Gross profit	18,284	13,280
Marketing, engineering and administrative expenses	10,495	9,424
Income (loss) from operations	7,789	3,856
Interest income	398	205
Interest expense	(1,756)	(899)
Other income (expense)	(3,320)	(889)
Total consolidated other income (expense)	(4,678)	(1,583)
Pretax earnings (loss)	3,111	2,273
Income tax benefit (expense)	(761)	(404)
Net income (loss)	2,350	1,869
Minority interest	0	0
Net income (loss) attributable to Twin Disc, Incorporated	2,350	1,869
Total consolidated assets	533,508	474,502
Depreciation and amortization	3,066	2,872
Expenditures for segment assets	2,288	1,713
Operating Segments [Member] | Distribution Segment [Member]
Net sales	21,778	29,583
Intra-segment sales	(3,162)	(5,117)
Inter-segment sales	(753)	(1,334)
Total consolidated net sales	17,863	23,132
Cost of goods sold	17,338	22,902
Intra-segment cost of goods sold	(3,162)	(5,117)
Inter-segment cost of goods sold	(753)	(1,334)
Total consoldiated cost of goods sold	13,423	16,451
Gross profit	4,440	6,681
Marketing, engineering and administrative expenses	3,736	3,828
Income (loss) from operations	704	2,853
Interest income	129	133
Interest expense	(2)	(2)
Other income (expense)	(1,528)	(1,372)
Total consolidated other income (expense)	(1,401)	(1,241)
Pretax earnings (loss)	(697)	1,612
Income tax benefit (expense)	(225)	(668)
Net income (loss)	(922)	944
Minority interest	106	(7)
Net income (loss) attributable to Twin Disc, Incorporated	(1,028)	951
Total consolidated assets	66,003	63,108
Depreciation and amortization	95	92
Expenditures for segment assets	370	357
Segment Reporting, Reconciling Item, Corporate Nonsegment [Member]
Net sales	0	0
Intra-segment sales	0	0
Inter-segment sales	0	0
Total consolidated net sales	0	0
Cost of goods sold	0	0
Intra-segment cost of goods sold	0	0
Inter-segment cost of goods sold	0	0
Total consoldiated cost of goods sold	0	0
Gross profit	0	0
Marketing, engineering and administrative expenses	6,468	6,235
Income (loss) from operations	(6,468)	(6,235)
Interest income	482	0
Interest expense	(32)	(34)
Other income (expense)	3,991	902
Total consolidated other income (expense)	4,441	868
Pretax earnings (loss)	(2,027)	(5,367)
Income tax benefit (expense)	17	227
Net income (loss)	(2,010)	(5,140)
Minority interest	0	0
Net income (loss) attributable to Twin Disc, Incorporated	(2,010)	(5,140)
Total consolidated assets	(225,825)	(203,841)
Depreciation and amortization	303	274
Expenditures for segment assets	772	292
Segment Reporting, Reconciling Item, Excluding Corporate Nonsegment [Member]
Net sales	(15,836)	(20,004)
Intra-segment sales	5,209	5,975
Inter-segment sales	10,627	14,029
Total consolidated net sales	0	0
Cost of goods sold	15,626	19,365
Intra-segment cost of goods sold	(5,209)	(5,975)
Inter-segment cost of goods sold	(10,627)	(14,029)
Total consoldiated cost of goods sold	(210)	(639)
Gross profit	210	639
Marketing, engineering and administrative expenses	0	0
Income (loss) from operations	210	639
Interest income	(990)	(299)
Interest expense	990	299
Other income (expense)	(26)	(24)
Total consolidated other income (expense)	(26)	(24)
Pretax earnings (loss)	184	615
Income tax benefit (expense)	(14)	218
Net income (loss)	170	833
Minority interest	0	0
Net income (loss) attributable to Twin Disc, Incorporated	170	833
Total consolidated assets	(10,150)	(10,222)
Depreciation and amortization	0	0
Expenditures for segment assets	$ 0	$ 0