v3.26.1
Note B - Inventories, Net - Effect of Change (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
 3 Months Ended 12 Months Ended
Jun. 30, 2026
Mar. 27, 2026
Dec. 26, 2025
Sep. 26, 2025
Jun. 30, 2025
Mar. 28, 2025
Dec. 27, 2024
Sep. 27, 2024
Jun. 30, 2026
Jun. 30, 2025
Jul. 01, 2025
Jul. 01, 2024
Jun. 30, 2024
Cost of goods sold $ 84,273 $ 69,563 $ 67,813 $ 57,062 $ 65,463 $ 59,536 $ 68,241 $ 53,575 $ 278,710 $ 246,815      
Gross profit 30,127 27,131 22,367 22,934 31,215 21,706 21,680 19,322 102,560 93,923      
Income (loss) from operations 7,815 5,822 2,087 2,235 6,542 1,947 2,760 (165) 17,960 11,084      
Income (loss) before income taxes and noncontrolling interest 6,932 5,395 698 571 2,740 (280) 2,651 (2,145) 13,596 2,966      
Income tax benefit (expense) (2,477) 1,839 (14,318) 983 (47) (1,142) (1,552) (627) 13,974 (3,368)      
Net income (loss) 9,409 3,556 15,016 (412) 2,693 (1,422) 1,099 (2,772) 27,570 (402)      
Net income (loss) attributable to Twin Disc, Incorporated 9,360 3,325 14,909 (518) 2,621 (1,472) 919 (2,765) 27,077 (697)      
Comprehensive income (loss) 8,386 1,167 16,554 (2,113) 15,026 2,278 (10,792) 3,760 23,994 10,272      
Comprehensive income (loss) attributable to Twin Disc, Incorporated $ 8,509 $ 956 $ 16,474 $ (2,304) $ 15,032 $ 2,196 $ (10,914) $ 3,624 $ 23,635 $ 9,938      
Basic earnings (loss) per share attributable to Twin Disc, Incorporated common shareholders (in dollars per share) $ 0.66 $ 0.23 $ 1.05 $ (0.04) $ 0.19 $ (0.11) $ 0.07 $ (0.2) $ 1.92 $ (0.05)      
Diluted earnings (loss) per share attributable to Twin Disc, Incorporated common shareholders (in dollars per share) $ 0.64 $ 0.23 $ 1.04 $ (0.04) $ 0.19 $ (0.11) $ 0.07 $ (0.2) $ 1.86 $ (0.05)      
Basic shares outstanding (in shares) 14,199 14,198 14,165 13,961 13,897 13,895 13,868 13,778 14,119 13,856      
Diluted shares outstanding (in shares) 14,666 14,416 14,389 13,961 13,971 13,895 14,058 13,778 14,586 13,856      
Inventories, net $ 178,028 $ 192,465 $ 195,311 $ 190,406 $ 184,085 $ 168,894 $ 159,215 $ 174,802 $ 178,028 $ 184,085      
Deferred income tax assets 21,093 19,786 20,089 2,790 2,812       21,093 2,812      
Retained earnings 182,340 173,547 170,802 156,464 157,548 155,509 157,547 157,194 182,340 157,548 $ 157,548   $ 160,529
Inventories, net                 3,291 (10,927)      
Provision for deferred income taxes                 (18,046) (1,581)      
Net cash provided (used) by operating activities                 22,899 23,979      
Balance at June 30, 2025 182,340 173,547 170,802 156,464 157,548 155,509 157,547 157,194 182,340 157,548 157,548   160,529
Dividends paid to shareholders and non-controlling interest                 (2,742) (2,590)      
Retained Earnings [Member]                          
Net income (loss)                 27,077 (697)      
Dividends paid to shareholders and non-controlling interest                 (2,285) (2,284)      
Previously Reported [Member]                          
Cost of goods sold 84,760 69,563 67,813 57,062 66,660 59,536 68,241 53,575 279,197        
Gross profit 29,640 27,131 22,367 22,934 30,018 21,706 21,680 19,322 102,073 92,726      
Income (loss) from operations 7,328 5,822 2,087 2,235 5,345 1,947 2,760 (165) 17,473 9,887      
Income (loss) before income taxes and noncontrolling interest 6,445 5,395 698 571 1,543 (280) 2,651 (2,145) 13,109 1,769      
Income tax benefit (expense) (2,363) 1,839 (21,780) 983 (47) (1,142) (1,552) (627) 21,322 (3,368)      
Net income (loss) 9,036 3,556 22,478 (412) 1,496 (1,422) 1,099 (2,772) 34,659 (1,599)      
Net income (loss) attributable to Twin Disc, Incorporated 8,987 3,325 22,371 (518) 1,424 (1,472) 919 (2,765) 34,166 (1,894)      
Comprehensive income (loss) 8,013 1,167 24,016 (2,113) 13,829 2,278 (10,792) 3,760 31,083 9,075      
Comprehensive income (loss) attributable to Twin Disc, Incorporated $ 8,136 $ 956 $ 23,936 $ (2,304) $ 13,835 $ 2,196 $ (10,914) $ 3,624 $ 30,724 $ 8,741      
Basic earnings (loss) per share attributable to Twin Disc, Incorporated common shareholders (in dollars per share) $ 0.63 $ 0.23 $ 1.58 $ (0.04) $ 0.1 $ (0.11) $ 0.07 $ (0.2) $ 2.42 $ (0.14)      
Diluted earnings (loss) per share attributable to Twin Disc, Incorporated common shareholders (in dollars per share) $ 0.61 $ 0.23 $ 1.55 $ (0.04) $ 0.1 $ (0.11) $ 0.07 $ (0.2) $ 2.34 $ (0.14)      
Basic shares outstanding (in shares) 14,199 14,198 14,165 13,961 13,897 13,895 13,868 13,778 14,119 13,856      
Diluted shares outstanding (in shares) 14,666 14,416 14,389 13,961 13,971 13,895 14,058 13,778 14,586 13,856      
Inventories, net $ 145,407 $ 160,331 $ 163,177 $ 158,272 $ 151,951 $ 137,957 $ 128,278 $ 143,865 $ 145,407 $ 151,951      
Deferred income tax assets 28,669 27,248 27,551 2,790 2,812       28,669 2,812      
Retained earnings 157,295 148,875 146,130 124,330 125,414 124,572 126,610 126,257 157,295 125,414 125,414   129,592
Inventories, net                 3,778 (9,730)      
Provision for deferred income taxes                 (25,622) (1,581)      
Net cash provided (used) by operating activities                 22,899 23,979      
Balance at June 30, 2025 157,295 148,875 146,130 124,330 125,414 124,572 126,610 126,257 157,295 125,414 125,414   129,592
Previously Reported [Member] | Retained Earnings [Member]                          
Dividends paid to shareholders and non-controlling interest                 (2,285) (2,284)      
Revision of Prior Period, Adjustment [Member]                          
Cost of goods sold (487) 0 0 0 (1,197) 0 0 0 (487)        
Gross profit 487 0 0 0 1,197 0 0 0 487 1,197      
Income (loss) from operations 487 0 0 0 1,197 0 0 0 487 1,197      
Income (loss) before income taxes and noncontrolling interest 487 0 0 0 1,197 0 0 0 487 1,197      
Income tax benefit (expense) (114) 0 7,462 0 0 0 0 (7,348) 0      
Net income (loss) 373 0 (7,462) 0 1,197 0 0 0 (7,089) 1,197      
Net income (loss) attributable to Twin Disc, Incorporated 373 0 (7,462) 0 1,197 0 0 0 (7,089) 1,197      
Comprehensive income (loss) 373 0 (7,462) 0 1,197 0 0 0 (7,089) 1,197      
Comprehensive income (loss) attributable to Twin Disc, Incorporated $ 373 $ 0 $ (7,462) $ 0 $ 1,197 $ 0 $ 0 $ 0 $ (7,089) $ 1,197      
Basic earnings (loss) per share attributable to Twin Disc, Incorporated common shareholders (in dollars per share) $ 0.03 $ 0 $ (0.53) $ 0 $ 0.08 $ 0 $ 0 $ 0 $ (0.5) $ 0.09      
Diluted earnings (loss) per share attributable to Twin Disc, Incorporated common shareholders (in dollars per share) $ 0.03 $ 0 $ (0.51) $ 0 $ 0.08 $ 0 $ 0 $ 0 $ (0.49) $ 0.09      
Basic shares outstanding (in shares) 0 0 0 0 0 0 0 0 0 0      
Diluted shares outstanding (in shares) 0 0 0 0 0 0 0 0 0 0      
Inventories, net $ 32,621 $ 32,134 $ 32,134 $ 32,134 $ 32,134 $ 30,937 $ 30,937 $ 30,937 $ 32,621 $ 32,134   $ 30,937  
Deferred income tax assets (7,576) (7,462) (7,462) 0       (7,576) 0      
Retained earnings 25,045 24,672 24,672 32,134 32,134 30,937 30,937 30,937 25,045 32,134 32,134 30,937 30,937
Inventories, net                 (487) (1,197)      
Provision for deferred income taxes                 7,576 0      
Net cash provided (used) by operating activities                 0 0      
Balance at June 30, 2025 $ 25,045 $ 24,672 $ 24,672 $ 32,134 $ 32,134 $ 30,937 $ 30,937 $ 30,937 $ 25,045 32,134 $ 32,134 $ 30,937 $ 30,937
Revision of Prior Period, Adjustment [Member] | Retained Earnings [Member]                          
Dividends paid to shareholders and non-controlling interest                   $ 0