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v3.19.3.a.u2

Schedule II Valuation and Qualifying Accounts | 12 Months Ended
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Dec. 31, 2019
Schedule II-Valuation and Qualifying Accounts |
Schedule II-Valuation and Qualifying Accounts |
|  | Balance at |  | Charged to |  |  |  |  | Balance at |
|  | Beginning of |  | Costs and |  |  |  |  | End of |
|  | Period |  | Expenses |  | Deductions |  | Period |
Year ended December 31, 2019 |  |  |  |  |  |  |  |  |  |  |  |  |
Allowance for doubtful accounts and returns |  | $ | — |  | $ | 818 |  | $ | — |  | $ | 818 |
Deferred tax valuation allowance |  |  | 6,835 |  |  | 1,492 |  |  | — |  |  | 8,327 |
Year ended December 31, 2018 |  |  |  |  |  |  |  |  |  |  |  |  |
Allowance for doubtful accounts and returns |  | $ | — |  | $ | — |  | $ | 0 |  | $ | — |
Deferred tax valuation allowance |  |  | 7,136 |  |  | (441) |  |  | (140) |  |  | 6,835 |
Year ended December 31, 2017 |  |  |  |  |  |  |  |  |  |  |  |  |
Allowance for doubtful accounts and returns |  | $ | 77 |  | $ | — |  | $ | 77 |  | $ | — |
Deferred tax valuation allowance |  |  | 122,966 |  |  | (115,831) |  |  | (1) |  |  | 7,136 |

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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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