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BUSINESS COMBINATIONS - Additional Information (Detail) $ in Millions |  |  | 3 Months Ended
--- | --- | --- | ---
Feb. 05, 2018 USD ($) | Nov. 01, 2017 USD ($) Number | Mar. 31, 2018 USD ($)
Business Acquisition [Line Items] |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Indefinite-Lived Intangible Assets |  | $ 0.4 |
Sao Judas Tadeu [Member] |  |  |
Business Acquisition [Line Items] |  |  |
Number Of Students In Degree Programs | Number |  | 2,700 |
Payments to Acquire Businesses, Gross |  | $ 1.0 |
Business Combination, Consideration Transferred |  | $ 6.0 |
Business Acquisition, Percentage of Voting Interests Acquired |  | 100.00% |
Business Combination, Contingent Consideration |  | $ 5.0 |
Sao Judas Tadeu [Member] | Trade Name [Member] |  |  |
Business Acquisition [Line Items] |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Indefinite-Lived Intangible Assets |  | $ 0.2 |
Edupristine [Member] |  |  |
Business Acquisition [Line Items] |  |  |
Payments to Acquire Businesses, Gross | $ 3.2 |  | $ 1.3
Business Acquisition, Percentage of Voting Interests Acquired | 64.00% |  | 69.00%
Equity Method Investment, Ownership Percentage | 36.00% |  |
Equity Method Investments, Fair Value Disclosure | $ 4.1 |  |
Business Combination, Acquisition of Less than 100 Percent, Noncontrolling Interest, Fair Value | 4.1 |  |
Gain (Loss) on Disposition of Stock in Subsidiary or Equity Method Investee | 1.2 |  |
Edupristine [Member] | Trade Name [Member] |  |  |
Business Acquisition [Line Items] |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Indefinite-Lived Intangible Assets | $ 1.4 |  |

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- Definition Percentage of voting equity interests acquired at the acquisition date in the business combination. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463 + Details
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- Definition This element represents the fair value of the noncontrolling interest in the acquiree at the acquisition date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (e)(1) -URI http://asc.fasb.org/extlink&oid=84161108&loc=d3e4845-128472 + Details
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