CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2025	Mar. 31, 2024
Cash Flows from Operating Activities:
Net increase (decrease) in net assets resulting from operations	$ 12,689	$ 7,979
Adjustments to reconcile net increase (decrease) in net assets resulting from operations to net cash provided by (used in) operating activities:
Fundings and purchases of investments	(28,537)	(13,716)
Principal payments and proceeds from investments	29,971	38,760
Payment-in-kind interest on investments	(3,756)	(3,787)
Net change in unrealized (gains) losses on investments	303	(1,263)
Net realized (gains) losses on investments	(2,254)	8,807
Amortization and (accretion) of premiums and discounts, net	(885)	878
(Accretion) reduction of end-of-term payments, net of prepayments	(605)	(1,139)
Amortization of debt fees and issuance costs	666	587
Change in operating assets and liabilities:
Prepaid expenses and other assets	(3,455)	(3,518)
Base management fee payable	(82)	(188)
Income incentive fee payable	0	0
Other accrued expenses and liabilities	(8,963)	(15,201)
Net cash (used in) provided by operating activities	(4,908)	18,199
Cash Flows from Financing Activities:
Borrowings under revolving credit facility	0	15,000
Repayments under revolving credit facility	0	(191,000)
Distributions paid	(11,408)	(14,273)
Debt issuance costs	(701)	0
Proceeds from the issuance of common stock, net	0	1,255
Net cash provided by (used in) financing activities	(32,109)	(189,018)
Net change in cash, cash equivalents and restricted cash	(37,017)	(170,819)
Cash, cash equivalents and restricted cash at beginning of period	78,727	171,582
Cash, cash equivalents and restricted cash at end of period	41,710	763
Cash and cash equivalents	34,672	124
Restricted cash	7,038	639
Total cash, cash equivalents and restricted cash shown in the statement of cash flows	41,710	763
Supplemental Disclosures of Cash Flow Information:
Cash paid for interest	9,782	11,121
Distributions reinvested	633	828
Excise tax paid	1,562	1,470
2028 Notes, net
Cash Flows from Financing Activities:
Proceeds from issuance of 2028 Notes	50,000	0
2025 Notes, net
Cash Flows from Financing Activities:
Repayment of 2025 Notes	$ (70,000)	$ 0

Accretion (Reduction) of End-Of-Term Payments, Net

No definition available.

Name:	tpvg_AccretionReductionOfEndOfTermPaymentsNet
Namespace Prefix:	tpvg_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The sum of the periodic adjustments of the differences between securities' face values and purchase prices that are charged against earnings. This is called accretion if the security was purchased at a discount and amortization if it was purchased at premium. As a noncash item, this element is an adjustment to net income when calculating cash provided by or used in operations using the indirect method.