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Tax Receivable Agreement Liability (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2017 | Sep. 30, 2017 | Jun. 30, 2017 | Jun. 30, 2018 | Jun. 30, 2017 | Jun. 30, 2016
Tax Receivable Agreement [Line Items] |  |  |  |  |  |
Tax receivable agreement, percentage of realized cash saving in tax to be pass through |  |  |  | 85.00% |  |
Tax Receivable Agreement [Roll Forward] |  |  |  |  |  |
Beginning balance |  | $ 82,291 |  | $ 82,291 | $ 93,750 |
Additions (reductions) to tax receivable agreement: |  |  |  |  |  |
Adjustment for change in estimated tax rate | $ 30,317 | $ 6,047 | $ 8,140 | (24,637) | (8,140) | $ 0
Payment under tax receivable agreement |  |  |  | (4,293) | (4,279) | (2,831)
Ending balance |  |  | 82,291 | 55,046 | 82,291 | $ 93,750
Payable pursuant to tax receivable agreement, current portion |  |  | (4,332) | (3,932) | (4,332) |
Payable pursuant to tax receivable agreement, less current portion |  |  | 77,959 | 51,114 | 77,959 |
Investment in subsidiaries |  |  | $ 109,375 | 107,293 | 109,375 |
Exchange of LLC Units for Class A Shares |  |  |  |  |  |
Additions (reductions) to tax receivable agreement: |  |  |  |  |  |
Exchange of LLC Units for Class A Common Stock |  |  |  | $ 1,685 | $ 960 |

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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from the entity's investment in its wholly-owned subsidiaries. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32632-109319 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 25 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=115928272&loc=d3e28680-109314 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32621-109319 + Details
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