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Schedule II - Valuation and Qualifying Accounts (Tables) | 12 Months Ended
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Dec. 31, 2019
SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract] |
Schedule of Valuation and Qualifying Accounts |
(In thousands) | Balance at Beginning of Period |  | Charged to Costs and Expenses |  | Write-offs (Recoveries) of Doubtful Accounts |  | Balance at End of Period
Year ended December 31, 2019: |  |  |  |  |  |  |
Allowance for doubtful accounts | $ | 8,613 |  |  | $ | 219 |  |  | $ | 911 |  |  | $ | 7,921 |
Year ended December 31, 2018: |  |  |  |  |  |  |
Allowance for doubtful accounts | $ | 8,250 |  |  | $ | 672 |  |  | $ | 309 |  |  | $ | 8,613 |
Year ended December 31, 2017: |  |  |  |  |  |  |
Allowance for doubtful accounts | $ | 9,183 |  |  | $ | 184 |  |  | $ | 1,117 |  |  | $ | 8,250 |
(In thousands) | Balance at Beginning of Period |  | Charged to Costs and Expenses (1) |  | Write-offs (Recoveries) of Doubtful Accounts |  | Balance at End of Period
Year ended December 31, 2019: |  |  |  |  |  |  |
Allowance for doubtful student notes | $ | 19,361 |  |  | $ | 19,834 |  |  | $ | 17,878 |  |  | $ | 21,317 |
Year ended December 31, 2018: |  |  |  |  |  |  |
Allowance for doubtful student notes | $ | 21,026 |  |  | $ | 17,858 |  |  | $ | 19,523 |  |  | $ | 19,361 |
Year ended December 31, 2017: |  |  |  |  |  |  |
Allowance for doubtful student notes | $ | 15,682 |  |  | $ | 15,917 |  |  | $ | 10,573 |  |  | $ | 21,026 |
(1) Includes $14,067 and $14,277 for the years ended December 31, 2019 and 2018, respectively, recorded as a reduction of revenues after adopting the new revenue recognition standard effective January 1, 2019.

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- Definition Tabular disclosure of allowance and reserve accounts including their beginning and ending balances, as well as a reconciliation by type of activity during the period. + References No definition available. + Details
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