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Debt - Summary of Commitments, Borrowings Outstanding and Fair Value of Notes (Details) - Unsecured Notes - USD ($) $ in Thousands	Jun. 30, 2026	Dec. 31, 2025
Debt Instrument [Line Items]
Commitments	$ 155,400	$ 194,383
Borrowings Outstanding	155,400	194,383
Fair Value	155,574	194,969
GECCO Notes
Debt Instrument [Line Items]
Commitments		38,983
Borrowings Outstanding		38,983
Fair Value		38,983
GECCI Notes
Debt Instrument [Line Items]
Commitments	56,500	56,500
Borrowings Outstanding	56,500	56,500
Fair Value	56,936	56,776
GECCH Notes
Debt Instrument [Line Items]
Commitments	41,400	41,400
Borrowings Outstanding	41,400	41,400
Fair Value	41,483	41,648
GECCG Notes
Debt Instrument [Line Items]
Commitments	57,500	57,500
Borrowings Outstanding	57,500	57,500
Fair Value	$ 57,155	$ 57,562

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