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Schedule II—Valuation and Qualifying Accounts | 12 Months Ended
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Dec. 31, 2019
Valuation And Qualifying Accounts [Abstract] |
Schedule II—Valuation and Qualifying Accounts | PARSONS CORPORATION AND SUBSIDIARIES Schedule II—Valuation and Qualifying Accounts
Description |  | Balance at beginning of period |  |  | Additions |  |  | Deductions |  |  | Other and foreign exchange impact |  |  | Balance at end of period |
2017 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Allowance for doubtful accounts |  |  | 40,368 |  |  |  | 12,530 |  |  |  | (2,730 | ) |  |  | 2,743 |  |  |  | 52,911 |
Valuation allowance on deferred tax assets |  |  | 7,444 |  |  |  | 3,456 |  |  |  | (2,168 | ) |  |  | 150 |  |  |  | 8,882 |
2018 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Allowance for doubtful accounts |  |  | 52,911 |  |  |  | 5,254 |  |  |  | (6,085 | ) |  |  | (1,378 | ) |  |  | 50,702 |
Valuation allowance on deferred tax assets |  |  | 8,882 |  |  |  | 452 |  |  |  | (2,633 | ) |  | -33 |  |  |  | 6,668 |
2019 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Allowance for doubtful accounts |  |  | 50,702 |  |  |  | 2,794 |  |  |  | (10,661 | ) |  |  | (1,002 | ) |  |  | 41,833 |
Valuation allowance on deferred tax assets |  |  | 6,668 |  |  |  | 10,817 |  |  |  | (32 | ) |  |  | (94 | ) |  |  | 17,359 |

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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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