XML 57 R46.htm IDEA: XBRL DOCUMENT v3.24.0.1

Investments - Summary of Fair Value of Investments by Fair Value Hierarchy Levels (Details) - ASC 820 - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair value of investments	$ 467,865	$ 576,478
Level II
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair value of investments	65,325	65,021
Level III
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair value of investments	357,528	471,170
NAV
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair value of investments	45,012	40,287
Debt securities
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair value of investments	379,077	475,165
Debt securities | Level II
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair value of investments	65,325	65,021
Debt securities | Level III
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair value of investments	313,752	410,144
Equity Securities
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair value of investments	20,533	21,905
Equity Securities | Level III
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair value of investments	20,533	21,905
CLO Fund Securities
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair value of investments	8,968	20,453
CLO Fund Securities | Level III
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair value of investments	8,968	20,453
Joint Ventures
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair value of investments	59,287	58,955
Joint Ventures | Level III
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair value of investments	14,275	18,668
Joint Ventures | NAV
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair value of investments	$ 45,012	$ 40,287

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

X

- Definition

Fair value portion of investment securities, including, but not limited to, marketable securities, derivative financial instruments, and investments accounted for under the equity method.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482106/820-10-50-2

+ Details

Name:	us-gaap_InvestmentsFairValueDisclosure
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Details

Name:	us-gaap_AdjustmentsForNewAccountingPronouncementsAxis=ptmn_AccountingStandardUpdate201104Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel2Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel3Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueMeasuredAtNetAssetValuePerShareMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_InvestmentTypeAxis=us-gaap_DebtSecuritiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_InvestmentTypeAxis=us-gaap_EquitySecuritiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_InvestmentTypeAxis=ptmn_CloFundSecuritiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_InvestmentTypeAxis=ptmn_JointVenturesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: