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Student Receivables (Tables) | 3 Months Ended
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Mar. 31, 2019
Receivables [Abstract] |
Changes in Current and Non-Current Receivables Allowance | Changes in our current and non-current receivables allowance for the quarters ended March 31, 2019 and 2018 were as follows (dollars in thousands):
|  | Balance, Beginning of Period |  |  | Charges to Expense (1) |  |  | Amounts Written-off |  |  | Balance, End of Period |
For the quarter ended March 31, 2019 |  | $ | 24,836 |  |  | $ | 11,722 |  |  | $ | (8,629 | ) |  | $ | 27,929 |
For the quarter ended March 31, 2018 |  | $ | 22,534 |  |  | $ | 7,013 |  |  | $ | (6,996 | ) |  | $ | 22,551 |
(1) | Charges to expense include an offset for recoveries of amounts previously written off of $0.9 million and $1.3 million for the quarters ended March 31, 2019 and 2018, respectively.

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- Definition Tabular disclosure related to the reconciliation of changes in the allowance for doubtful accounts, including disclosures for bad debt expense and amounts written off. + References No definition available. + Details
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