XML 58 R45.htm IDEA: XBRL DOCUMENT
v3.20.2

Acquisitions - Schedule of Supplemental Pro Forma Information (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2020 | Sep. 30, 2019 | Sep. 30, 2020 | Sep. 30, 2019
OGSystems |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Pro forma revenue | $ 1,004,236 | $ 1,023,277 | $ 2,954,688 | $ 2,919,379
Pro forma net income including noncontrolling interests | 47,561 | 61,293 | 95,189 | 118,896
QRC Technologies |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Pro forma revenue | 1,004,236 | 1,026,831 | 2,954,688 | 2,938,973
Pro forma net income including noncontrolling interests | $ 47,618 | $ 65,782 | $ 95,994 | $ 117,399

X
- Definition Business acquisition, pro forma net income (loss), including portion attributable to noncontrolling interest. + References No definition available. + Details
Name: | psn_BusinessAcquisitionProFormaNetIncomeLossIncludingPortionAttributableToNoncontrollingInterest
Namespace Prefix: | psn_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_BusinessAcquisitionLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The pro forma revenue for a period as if the business combination or combinations had been completed at the beginning of the period. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(2) -URI http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(3) -URI http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463 + Details
Name: | us-gaap_BusinessAcquisitionsProFormaRevenue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=psn_OGSystemsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=psn_QRCTechnologiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |