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Subsequent Event and Assets and Liabilities Held for Sale - Summary of Assets Held for Sale and Liabilities Held for Sale (Detail) - USD ($)
$ in Thousands
Jun. 30, 2018
Dec. 31, 2017
Long Lived Assets Held-for-sale [Line Items]    
Restricted cash and cash equivalents   $ 94,534
Accounts receivable, net   10,908
Other assets $ 8,748 24,589
Property and equipment, net 112,185 922,284
Total assets held for sale, current 974,353  
Accrued and other liabilities 18,995 20,757
Student deposits   95,298
Deferred revenue   46,895
Note payable 56,619 $ 59,925
Asset Held For Sale [Member]    
Long Lived Assets Held-for-sale [Line Items]    
Restricted cash and cash equivalents 87,875  
Accounts receivable, net 9,780  
Other assets 7,578  
Property and equipment, net 869,120  
Total assets held for sale, current 974,353  
Liabilities Held For Sale [Member]    
Long Lived Assets Held-for-sale [Line Items]    
Accrued and other liabilities 4,727  
Student deposits 88,010  
Deferred revenue 46,324  
Note payable 79  
Total liabilities held for sale, current $ 139,140