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Student Receivables - Changes in Current and Non-Current Receivables Allowance (Detail) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2022
Jun. 30, 2021
Receivables [Abstract]        
Balance, Beginning of Period $ 43,657 $ 43,785 $ 39,255 $ 42,147
Provision for credit losses 10,664 12,448 24,379 26,172
Amounts Written-off (11,258) (14,253) (21,522) (27,320)
Recoveries 723 896 1,674 1,877
Balance, End of Period $ 43,786 $ 42,876 $ 43,786 $ 42,876