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Income Taxes - Schedule of Reconciliation of Income Tax Expense at Statutory U.S. Federal Rate to Reported Income Tax Expense (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
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Jun. 30, 2021 | Mar. 31, 2021 | Dec. 31, 2020 | Sep. 30, 2020 | Jun. 30, 2020 | Mar. 31, 2020 | Dec. 31, 2019 | Sep. 30, 2019 | Jun. 30, 2021 | Jun. 30, 2020 | Jun. 30, 2019
Income Tax Disclosure [Abstract] |  |  |  |  |  |  |  |  |  |  |
Taxes at statutory rate |  |  |  |  |  |  |  |  | $ 74,044 | $ (13,425) | $ 27,051
Increase (decrease) in taxes resulting from: |  |  |  |  |  |  |  |  |  |  |
State income taxes-net of federal benefit |  |  |  |  |  |  |  |  | 1,246 | 1,194 | (1,212)
Taxes on non U.S. earnings |  |  |  |  |  |  |  |  | (26,557) | (915) | (5,857)
Valuation allowance |  |  |  |  |  |  |  |  | (3,720) | (9,365) | (6,703)
Research and manufacturing incentive deductions and credits |  |  |  |  |  |  |  |  | (22,968) | (15,836) | (11,756)
Stock compensation |  |  |  |  |  |  |  |  | (2,500) | 4,334 | (1,914)
Repatriation tax |  |  |  |  |  |  |  |  | 0 | 0 | 14,108
GILTI and FDII |  |  |  |  |  |  |  |  | 27,369 | 36,067 | 6,437
Other |  |  |  |  |  |  |  |  | 8,124 | 1,047 | 1,142
Total Income Tax Expense | $ 10,957 | $ 12,387 | $ 18,383 | $ 13,311 | $ (10,550) | $ 27,417 | $ (9,242) | $ (4,524) | $ 55,038 | $ 3,101 | $ 21,296
Taxes at statutory rate |  |  |  |  |  |  |  |  | 21.00% | 21.00% | 21.00%
Increase (decrease) in taxes resulting from: |  |  |  |  |  |  |  |  |  |  |
State income taxes-net of federal benefit, rate |  |  |  |  |  |  |  |  | 0.00% | (2.00%) | (1.00%)
Taxes on non U.S. earnings, rate |  |  |  |  |  |  |  |  | (7.00%) | 1.00% | (5.00%)
Valuation allowance, rate |  |  |  |  |  |  |  |  | (1.00%) | 15.00% | (5.00%)
Research and manufacturing incentive deductions and credits, rate |  |  |  |  |  |  |  |  | (6.00%) | 25.00% | (9.00%)
Stock compensation, rate |  |  |  |  |  |  |  |  | (1.00%) | (7.00%) | (1.00%)
Repatriation tax, rate |  |  |  |  |  |  |  |  | 0.00% | 0.00% | 11.00%
GILTI and FDII, rate |  |  |  |  |  |  |  |  | 8.00% | (56.00%) | 5.00%
Other, rate |  |  |  |  |  |  |  |  | 2.00% | (2.00%) | 1.00%
Total Effective Income Tax, rate |  |  |  |  |  |  |  |  | 16.00% | (5.00%) | 17.00%

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