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Income Taxes (Tables) | 12 Months Ended
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Jun. 30, 2025 | Jun. 30, 2024
Income Tax Disclosure [Abstract] |  |
Income Before Income Taxes | Income (loss) before income taxes consisted of the following for the years ended June 30:
(in thousands) |  | 2025 |  | 2024 |  | 2023
Income (loss) before income taxes: |  |  |  |  |  |
United States |  | $ | (10,085) |  |  | $ | (13,544) |  |  | $ | (14,702) |
International |  | 142,089 |  |  | 157,994 |  |  | 174,323 |
Total income before income taxes |  | $ | 132,004 |  |  | $ | 144,450 |  |  | $ | 159,621 |
Current income tax expense (benefit): |  |  |  |  |  |
Federal |  | $ | 2,048 |  |  | $ | (4,003) |  |  | $ | 2,007 |
State |  | 346 |  |  | 1,045 |  |  | 546 |
International |  | 43,986 |  |  | 41,784 |  |  | 42,921 |
Total current income tax expense |  | 46,380 |  |  | 38,826 |  |  | 45,474 |
Deferred income tax expense (benefit): |  |  |  |  |  |
Federal |  | $ | (7,647) |  |  | $ | (3,389) |  |  | $ | (3,394) |
State |  | (1,549) |  |  | (2,880) |  |  | 683 |
International |  | (3,888) |  |  | (1,748) |  |  | (6,508) |
Total deferred income tax expense (benefit): |  | (13,084) |  |  | (8,017) |  |  | (9,219) |
Provision for income taxes |  | $ | 33,296 |  |  | $ | 30,809 |  |  | $ | 36,255 |
Effective tax rate |  | 25.2 | % |  | 21.3 | % |  | 22.7 | %
Reconciliation of Income Taxes and the Provision for Income Taxes | The reconciliation of income taxes computed using the statutory U.S. income tax rate and the provision for income taxes was as follows for the years ended June 30:
(in thousands) |  | 2025 |  | 2024 |  | 2023
Income taxes at U.S. statutory rate |  | $ | 27,721 |  |  | $ | 30,335 |  |  | $ | 33,520 |
State income taxes, net of federal tax benefit |  | (950) |  |  | (1,412) |  |  | 971 |
U.S. income taxes provided on international income |  | 3,220 |  |  | 4,272 |  |  | 4,583 |
Combined tax effects of international income |  | 8,165 |  |  | 10,355 |  |  | 5,761 |
Change in valuation allowance and other uncertain tax positions |  | (103) |  |  | (3,590) |  |  | (4,060) |
U.S. research and development credit |  | (2,880) |  |  | (4,026) |  |  | (3,325) |
Advanced manufacturing production credit |  | (2,941) |  |  | (488) |  |  | — |
Combined effects of Swiss tax reform |  | — |  |  | (7,801) |  |  | (2,225) |
Non-deductible executive compensation |  | 417 |  |  | 2,389 |  |  | 667 |
Other |  | 647 |  |  | 775 |  |  | 363 |
Provision for income taxes |  | $ | 33,296 |  |  | $ | 30,809 |  |  | $ | 36,255 |
Components of Net Deferred Tax Liabilities and Assets |  | The components of net deferred tax assets and liabilities were as follows at June 30:
(in thousands) |  | 2025 |  | 2024
Deferred tax assets: |  |  |  |
Net operating loss (NOL) carryforwards |  | $ | 19,756 |  |  | $ | 20,340 |
Inventory valuation and reserves |  | 8,974 |  |  | 9,322 |
Accrued employee benefits |  | 13,613 |  |  | 13,627 |
Operating lease liabilities |  | 10,759 |  |  | 12,097 |
Other accrued liabilities |  | 12,976 |  |  | 13,810 |
Capitalized research and development costs |  | 42,947 |  |  | 35,637 |
Tax credits and other carryforwards |  | 19,582 |  |  | 18,231 |
Intangible assets |  | 11,618 |  |  | 11,095 |
Total |  | 140,225 |  |  | 134,159 |
Valuation allowance |  | 6,214 |  |  | 5,911 |
Total deferred tax assets |  | $ | 134,011 |  |  | $ | 128,248 |
Deferred tax liabilities: |  |  |  |
Tax depreciation in excess of book |  | $ | 53,337 |  |  | $ | 58,723 |
Operating lease right-of-use assets |  | 10,710 |  |  | 12,038 |
Unremitted earnings not permanently reinvested |  | 3,754 |  |  | 6,931 |
Pension benefits |  | 3,882 |  |  | 2,633 |
Other |  | 4,464 |  |  | 4,761 |
Total deferred tax liabilities |  | $ | 76,147 |  |  | $ | 85,086 |
Total net deferred tax assets |  | $ | 57,864 |  |  | $ | 43,162 |
Reconciliation of Unrecognized Tax Benefits Excluding Interest | A reconciliation of the beginning and ending amount of unrecognized tax benefits (excluding interest and penalty) is as follows as of June 30:
(in thousands) |  | 2025 |  | 2024 |  | 2023
Balance at beginning of year |  | $ | 1,309 |  |  | $ | 6,935 |  |  | $ | 7,598 |
(Decreases)/Increases for tax positions of prior years |  | 316 |  | — |  |  | (658) |
Increases for tax positions related to the current year |  | 77 |  | 79 |  | — |
Decreases related to lapse of statute of limitations |  | (140) |  |  | (5,686) |  |  | (99) |
Foreign currency translation |  | 132 |  | (19) |  |  | 94
Balance at end of year |  | $ | 1,694 |  |  | $ | 1,309 |  |  | $ | 6,935 |

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