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Schedule II - Valuation And Qualifying Accounts And Reserves | 12 Months Ended
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Dec. 31, 2018
SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract] |
Schedule II - Valuation and Qualifying Accounts and Reserves |
Schedule II - Valuation and Qualifying Accounts and Reserves |  |  |  | SEI Investments Company
(In thousands) |  |  |  |  |  |  |  | and Subsidiaries
Year Ended December 31, |  |  | Additions |  |  |  |
Description |  | Balance at Beginning of Year |  | Charged to Costs and Expenses |  | Charged to Other Accounts |  | (Deductions) |  | Balance at End of Year
Allowance for doubtful accounts: |  |  |  |  |  |  |  |  |  |
2018 |  | $ | 695 |  |  | $ | 23 |  |  | $ | — |  |  | $ | — |  |  | $ | 718 |
2017 |  | 523 |  |  | 172 |  |  | — |  |  | — |  |  | 695 |
2016 |  | 649 |  |  | — |  |  | — |  |  | (126 | ) |  | 523 |
Deferred income tax valuation allowance: |  |  |  |  |  |  |  |  |  |
2018 |  | $ | 68,469 |  |  | $ | — |  |  | $ | 3,847 |  |  | $ | — |  |  | $ | 72,316 |
2017 (1) |  | 17,922 |  |  | — |  |  | 50,547 |  |  | — |  |  | 68,469 |
2016 |  | 14,548 |  |  | — |  |  | 3,374 |  |  | — |  |  | 17,922 |
(1) Additions to deferred income tax valuation allowance in 2017 reflect the Pennsylvania state tax law change in October 2017 regarding the use of net operating losses.

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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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