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v3.19.3.a.u2

Valuation and Qualifying Accounts | 12 Months Ended
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Dec. 31, 2019
Valuation and Qualifying Accounts [Abstract] |
Valuation and Qualifying Accounts | 6. Valuation and Qualifying Accounts ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
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​ | ​ | Balance at |  | ​ |  | ​ |  | Balance at
​ | ​ | Beginning of | ​ | Charged to | ​ | Deductions/ | ​ | End of
​ | ​ | Period | ​ | Expense | ​ | Transfers(1)(2) | ​ | Period
Allowance for doubtful accounts receivable | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Year ended December 31, 2019 | ​ | $ | — |  | — |  | — | ​ | $ | —
Year ended December 31, 2018 | ​ | $ | 5,907 |  | 8,669 |  | (14,576) | ​ | $ | —
Year ended December 31, 2017 | ​ | $ | 5,918 |  | 18,478 |  | (18,489) | ​ | $ | 5,907
(1) | Deductions represent accounts written off, net of recoveries.
(2) | $6,093 included in the deductions column for the year ended December 31, 2018, represents the allowance that was transferred to GCU with other educational assets and liabilities on July 1, 2018. See Note 2.

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- Definition The entire disclosure for valuation and qualifying accounts and reserves. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 12 -Subsection 09 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-09) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690 + Details
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- References No definition available. + Details
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