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INCOME TAX - Components of Income Tax Expense (Details) - USD ($)
$ in Thousands
 7 Months Ended 12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
May 31, 2016
May 31, 2015
May 31, 2014
Current income tax expense (benefit):          
Federal $ 22,859   $ 26,493 $ 25,022 $ 49,178
State 3,443   5,454 3,905 3,856
Foreign 42,681   56,689 (10,346) 48,075
Current tax expense 68,983   88,636 18,581 101,109
Deferred income tax expense (benefit):          
Federal (36,447)   (18,205) 14,822 1,568
State (1,842)   (3,620) 3,606 1,206
Foreign 4,967   3,884 70,986 3,515
Deferred tax expense (33,322)   (17,941) 89,414 6,289
Provision for income taxes $ 35,661 $ 70,089 $ 70,695 $ 107,995 $ 107,398