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SEGMENT INFORMATION (Tabulation of Business Segment Information Based on Current Segmentation) (Detail) - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Jun. 30, 2018
Mar. 31, 2018
Dec. 31, 2017
Sep. 30, 2017
Jun. 30, 2017
Mar. 31, 2017
Dec. 31, 2016
Sep. 30, 2016
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2016
Segment Reporting Information [Line Items]                      
Total Consolidated Revenue $ 319,787 $ 310,070 $ 308,211 $ 293,143 $ 315,216 $ 299,138 $ 301,513 $ 292,042 $ 1,231,211 $ 1,207,909 $ 1,080,075
Total Consolidated Operating Income from Continuing Operations 65,167 $ 52,505 $ 59,918 $ 29,886 51,741 $ 45,466 $ 3,164 $ 35,127 207,476 135,498 156,090
Discontinued Operations 60,582       165,236       60,582 165,236  
Total Consolidated Assets 2,344,961       2,315,018       2,344,961 2,315,018 2,096,996
Total Consolidated Additions to Long-Lived Assets                 85,835 405,748 244,526
Total Consolidated Depreciation Expense                 43,286 45,805 43,319
Total Consolidated Amortization Expense                 9,538 11,169 5,192
Discontinued Operations, Held-for-sale [Member]                      
Segment Reporting Information [Line Items]                      
Discontinued Operations 60,582       165,236       60,582 165,236 200,643
Reconciliation to Consolidated Financial Statements [Member]                      
Segment Reporting Information [Line Items]                      
Capital Expenditures                 66,530 42,508 51,455
Increase in Capital Assets from Acquisitions                 381 4,913 13,778
Increase in Intangible Assets and Goodwill                 18,924 358,327 179,293
Total Consolidated Additions to Long-Lived Assets                 85,835 405,748 244,526
Medical and Healthcare [Member]                      
Segment Reporting Information [Line Items]                      
Total Consolidated Revenue                 815,674 802,462 783,655
Total Consolidated Operating Income from Continuing Operations                 189,672 187,138 178,484
Total Consolidated Assets 988,920       905,741       988,920 905,741 834,975
Total Consolidated Additions to Long-Lived Assets                 34,099 15,774 25,645
Total Consolidated Depreciation Expense                 29,731 31,938 33,795
Professional Education [Member]                      
Segment Reporting Information [Line Items]                      
Total Consolidated Revenue                 147,195 131,769 102,921
Total Consolidated Operating Income from Continuing Operations                 27,695 19,866 28,043
Total Consolidated Assets 456,589       451,261       456,589 451,261 91,741
Total Consolidated Additions to Long-Lived Assets                 15,063 364,275 1,120
Total Consolidated Depreciation Expense                 1,999 1,869 1,550
Total Consolidated Amortization Expense                 6,501 7,482 563
Technology and Business [Member]                      
Segment Reporting Information [Line Items]                      
Total Consolidated Revenue                 270,934 276,341 196,097
Total Consolidated Operating Income from Continuing Operations                 29,431 36,204 13,580
Total Consolidated Assets 547,110       606,563       547,110 606,563 583,020
Total Consolidated Additions to Long-Lived Assets                 25,998 19,222 206,955
Total Consolidated Depreciation Expense                 10,282 10,117 5,444
Total Consolidated Amortization Expense                 3,037 3,687 4,629
Home Office and Other [Member]                      
Segment Reporting Information [Line Items]                      
Total Consolidated Revenue                 (2,592) (2,663) (2,598)
Total Consolidated Operating Income from Continuing Operations                 (39,322) (107,710) (64,017)
Total Consolidated Assets $ 291,760       $ 186,217       291,760 186,217 386,617
Total Consolidated Additions to Long-Lived Assets                 10,675 6,477 10,806
Total Consolidated Depreciation Expense                 $ 1,274 $ 1,881 $ 2,530