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Summary of Significant Accounting Policies - Fair Value (Details) - USD ($) $ in Thousands | 6 Months Ended |  |  |  |  |
--- | --- | --- | --- | --- | --- | ---
Dec. 31, 2016 | Dec. 31, 2017 | Sep. 30, 2017 | Jun. 30, 2017 | Sep. 30, 2016 | Jun. 30, 2016
Noncontrolling Interests |  |  |  |  |  |
Cash paid | $ 9,134 |  |  |  |  |
Measured on a recurring basis |  |  |  |  |  |
Assets and liabilities measured at fair value on a recurring and nonrecurring basis |  |  |  |  |  |
Total | 2,963 | $ 1,340 | $ 838 | $ 2,806 | $ 12,156 | $ 9,748
Measured on a recurring basis | Middlebury Interactive Languages LLC |  |  |  |  |  |
Assets and liabilities measured at fair value on a recurring and nonrecurring basis |  |  |  |  |  |
Redeemable Noncontrolling Interest Fair Value |  |  |  |  | 9,201 | 6,801
Measured on a nonrecurring basis |  |  |  |  |  |
Assets and liabilities measured at fair value on a recurring and nonrecurring basis |  |  |  |  |  |
Held for sale asset |  | 1,200 |  | 1,200 |  |
Lease exit liability |  | 4,000 |  | 4,841 |  |
Measured on a nonrecurring basis | Significant Unobservable Inputs (Level 3) |  |  |  |  |  |
Assets and liabilities measured at fair value on a recurring and nonrecurring basis |  |  |  |  |  |
Held for sale asset |  | 1,200 |  | 1,200 |  |
Lease exit liability |  | 4,000 |  | 4,841 |  |
Acquisitions | Measured on a recurring basis |  |  |  |  |  |
Assets and liabilities measured at fair value on a recurring and nonrecurring basis |  |  |  |  |  |
Contingent consideration | $ 2,963 | 1,340 | $ 838 | 2,806 | $ 2,955 | $ 2,947
Acquisitions | Measured on a recurring basis | Significant Unobservable Inputs (Level 3) |  |  |  |  |  |
Assets and liabilities measured at fair value on a recurring and nonrecurring basis |  |  |  |  |  |
Contingent consideration |  | $ 1,340 |  | $ 2,806 |  |

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