XML 66 R56.htm IDEA: XBRL DOCUMENT
v3.23.3

Commitments and Contingencies - Additional Information (Details) - USD ($) $ in Thousands | 9 Months Ended |
--- | --- | ---
Sep. 30, 2023 | Dec. 31, 2022
Other Commitments [Line Items] |  |
Unfunded commitment to investee | $ 23,687 | $ 34,959
Series A-Great Lakes Funding II LLC |  |
Other Commitments [Line Items] |  |
Unfunded commitment to investee | 1,400 | $ 8,000
Aggregate commitment | $ 50,000 |

X
- Definition Amount of funds committed to investment company from investors. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 205 -Name Accounting Standards Codification -Section 50 -Paragraph 25 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480737/946-205-50-25 + Details
Name: | us-gaap_InvestmentCompanyCommittedCapital
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of financial support committed by investment company to investee that is contractually required but not provided. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 16 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480990/946-20-50-16 + Details
Name: | us-gaap_InvestmentCompanyFinancialCommitmentToInvesteeFutureAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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_OtherCommitmentsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=ptmn_SeriesAGreatLakesFundingIiLlcMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |