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Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2020 | Dec. 31, 2019 | Jun. 30, 2020
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |  |
Balance at the beginning of period - Net of Tax | $ 1,330,971 | $ 1,327,193 | $ 1,310,421 | $ 1,391,530 |
Retained earnings | 1,970,813 | 2,032,788 | 1,970,813 | 2,032,788 | $ 1,927,568
Balance at the end of period - Net of Tax | 1,313,779 | 1,294,912 | 1,313,779 | 1,294,912 |
Accumulated Other Comprehensive Loss [Member] |  |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |  |
Balance at the beginning of period - Net of Tax | (8,612) | (176,739) | (9,055) | (137,290) |
Balance at the end of period - Net of Tax | (7,711) | (159,118) | (7,711) | (159,118) |
Foreign currency translation adjustments |  |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |  |
Balance at the beginning of period - Net of Tax | (1,065) | (176,883) | (1,383) | (137,389) |
Other comprehensive income (loss) - Gross | 443 | 17,624 | 761 | (21,870) |
Balance at the end of period - Net of Tax | (622) | (159,259) | (622) | (159,259) |
Marketable Securities. |  |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |  |
Balance at the beginning of period - Gross | 240 | 190 | 242 | 131 |
Balance at the beginning of period - Tax | 58 | 46 | 59 | 32 |
Balance at the beginning of period - Net of Tax | 182 | 144 | 183 | 99 |
Other comprehensive income (loss) - Gross | 3 | (4) | 2 | 55 |
Other comprehensive income (loss) - Tax | (1) | 1 | (1) | (13) |
Balance at the end of period - Net of Tax | 184 | 141 | 184 | 141 |
Interest Rate Swap |  |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |  |
Balance at the beginning of period - Gross | (10,232) | 0 | (10,399) | 0 |
Balance at the beginning of period - Tax | (2,503) | 0 | (2,544) | 0 |
Balance at the beginning of period - Net of Tax | (7,729) | 0 | (7,855) | 0 |
Other comprehensive income (loss) - Gross | 603 | 0 | 770 | 0 |
Other comprehensive income (loss) - Tax | (147) | 0 | (188) | 0 |
Balance at the end of period - Net of Tax | $ (7,273) | $ 0 | $ (7,273) | $ 0 |

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- Definition Amount before tax of increase (decrease) in accumulated equity from transactions and other events and circumstances from non-owner sources, attributable to parent. Excludes net income (loss), and accumulated changes in equity from transactions resulting from investments by owners (distributions to owners). + References No definition available. + Details
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- Definition Amount before tax, after reclassification adjustments of other comprehensive income (loss). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 30 -Section 45 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=118261656&loc=d3e32211-110900 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 30 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6450520&loc=d3e32583-110901 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 220 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04(19)) -URI http://asc.fasb.org/extlink&oid=120400993&loc=SL114874131-224263 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=109237563&loc=d3e33775-111570 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 220 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04(23)) -URI http://asc.fasb.org/extlink&oid=120399700&loc=SL114874048-224260 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 30 -Section 45 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=118261656&loc=d3e32136-110900 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(21)) -URI http://asc.fasb.org/extlink&oid=120395209&loc=SL114868664-224227 + Details
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