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Summary of Significant Accounting Policies - Fair Value Measurements (Details) - USD ($) $ in Thousands |  |  | 12 Months Ended | 14 Months Ended
--- | --- | --- | --- | ---
Dec. 27, 2016 | Apr. 21, 2016 | Jun. 30, 2018 | Jun. 30, 2017 | Jun. 30, 2016 | Jun. 30, 2017
Middlebury Interactive Languages LLC |  |  |  |  |  |
Fair value measurements categorized as Level 3 of the valuation hierarchy, valued on a recurring basis |  |  |  |  |  |
Ownership percentage acquired (as a percent) | 40.00% |  |  |  |  |
Cash purchase price | $ 9,100 |  |  |  |  |
Significant Unobservable Inputs (Level 3) | Measured on a recurring basis |  |  |  |  |  |
Fair value measurements categorized as Level 3 of the valuation hierarchy, valued on a recurring basis |  |  |  |  |  |
Fair Value, beginning of period |  |  | $ 2,806 | $ 9,748 | $ 6,801 |
Purchases, Issuances and Settlements |  |  |  | (9,134) | 2,942 |
Unrealized Gains/(Losses) |  |  |  | 2,192 | 5 |
Fair Value, end of period |  |  |  | 2,806 | 9,748 | $ 2,806
Significant Unobservable Inputs (Level 3) | Measured on a recurring basis | Middlebury Interactive Languages LLC |  |  |  |  |  |
Fair value measurements categorized as Level 3 of the valuation hierarchy, valued on a recurring basis |  |  |  |  |  |
Redeemable noncontrolling interest fair value, beginning balance |  |  |  | 6,801 | 6,801 |
Purchases, Issuances and Settlements |  |  |  | (9,134) |  |
Unrealized Gains/(Losses) |  |  |  | 2,333 |  |
Redeemable noncontrolling interest fair value, ending balance |  |  |  |  | 6,801 |
LTS |  |  |  |  |  |
Fair value measurements categorized as Level 3 of the valuation hierarchy, valued on a recurring basis |  |  |  |  |  |
Ownership percentage acquired (as a percent) |  | 100.00% |  |  |  |
Cash purchase price |  | $ 20,200 |  |  |  | 20,200
Acquisitions | Measured on a recurring basis |  |  |  |  |  |
Fair value measurements categorized as Level 3 of the valuation hierarchy, valued on a recurring basis |  |  |  |  |  |
Contingent consideration, fair value, beginning balance |  |  | 2,806 |  |  |
Contingent consideration, fair value, ending balance |  |  | 1,345 | 2,806 |  | 2,806
Acquisitions | Significant Unobservable Inputs (Level 3) | Measured on a recurring basis |  |  |  |  |  |
Fair value measurements categorized as Level 3 of the valuation hierarchy, valued on a recurring basis |  |  |  |  |  |
Contingent consideration, fair value, beginning balance |  |  | 2,806 | 2,947 |  |
Purchases, Issuances and Settlements |  |  | (1,319) |  | 2,942 |
Unrealized Gains/(Losses) |  |  | (142) | (141) | 5 |
Contingent consideration, fair value, ending balance |  |  | $ 1,345 | $ 2,806 | $ 2,947 | $ 2,806

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