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Student Receivables (Tables) | 12 Months Ended
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Dec. 31, 2019
Receivables [Abstract] |
Changes in Current and Non-Current Receivables Allowance | Changes in our current and non-current receivables allowance for the years ended December 31, 2019, 2018 and 2017 were as follows (dollars in thousands):
|  | Balance, Beginning of Period |  |  | Charges to Expense (1) |  |  | Amounts Written-off |  |  | Balance, End of Period |
For the year ended December 31, 2019 |  | $ | 24,836 |  |  | $ | 43,470 |  |  | $ | (36,342 | ) |  | $ | 31,964 |
For the year ended December 31, 2018 |  | $ | 22,534 |  |  | $ | 32,042 |  |  | $ | (29,740 | ) |  | $ | 24,836 |
For the year ended December 31, 2017 |  | $ | 23,142 |  |  | $ | 27,571 |  |  | $ | (28,179 | ) |  | $ | 22,534 |
(1) | Charges to expense include an offset for recoveries of amounts previously written off of $2.6 million, $5.7 million and $4.2 million for the years ended December 31, 2019, 2018 and 2017, 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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