v3.25.2
Transactions with Affiliate Companies - Income Information (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Investments in and Advances to Affiliates, Activity [Line Items]        
Interest Income $ 6,864 $ 11,850 $ 14,830 $ 23,512
Dividend Income 829 1,017 1,858 2,029
Non-controlled affiliate company investments        
Investments in and Advances to Affiliates, Activity [Line Items]        
Interest Income     2,469 5,096
Dividend Income 60 55 117 108
Other Income     0 0
Non-controlled affiliate company investments | American Community Homes, Inc.        
Investments in and Advances to Affiliates, Activity [Line Items]        
Interest Income     674 1,067
Dividend Income     0 0
Other Income     0 0
Non-controlled affiliate company investments | Ascent Midco, LLC        
Investments in and Advances to Affiliates, Activity [Line Items]        
Interest Income     0 0
Dividend Income     117 108
Other Income     0 0
Non-controlled affiliate company investments | Familia Dental Group Holdings, LLC        
Investments in and Advances to Affiliates, Activity [Line Items]        
Interest Income     0 0
Dividend Income     0 0
Other Income     0 0
Non-controlled affiliate company investments | HFZ Capital Group, LLC and MC Asset Management (Corporate), LLC        
Investments in and Advances to Affiliates, Activity [Line Items]        
Interest Income     1,422 3,135
Dividend Income     0 0
Other Income     0 0
Non-controlled affiliate company investments | Mnine Holdings, Inc.        
Investments in and Advances to Affiliates, Activity [Line Items]        
Interest Income     0 445
Dividend Income     0 0
Other Income     0 0
Non-controlled affiliate company investments | NationsBenefits, LLC (Revolver)        
Investments in and Advances to Affiliates, Activity [Line Items]        
Interest Income     0 0
Dividend Income     0 0
Other Income     0 0
Non-controlled affiliate company investments | Second Avenue SFR Holdings II LLC        
Investments in and Advances to Affiliates, Activity [Line Items]        
Interest Income       208
Dividend Income       0
Other Income       0
Non-controlled affiliate company investments | SFR Holdco LLC        
Investments in and Advances to Affiliates, Activity [Line Items]        
Interest Income     296 234
Dividend Income     0 0
Other Income     0 0
Non-controlled affiliate company investments | SFR Holdco 2, LLC        
Investments in and Advances to Affiliates, Activity [Line Items]        
Interest Income     75 0
Dividend Income     0 0
Other Income     0 0
Non-controlled affiliate company investments | TJ Management HoldCo LLC (Revolver)        
Investments in and Advances to Affiliates, Activity [Line Items]        
Interest Income     2 7
Dividend Income     0 0
Other Income     0 0
Controlled affiliate company investments        
Investments in and Advances to Affiliates, Activity [Line Items]        
Interest Income     0 0
Dividend Income $ 700 $ 900 1,600 1,800
Other Income     0 0
Controlled affiliate company investments | MRCC Senior Loan Fund I, LLC        
Investments in and Advances to Affiliates, Activity [Line Items]        
Interest Income     0 0
Dividend Income     1,600 1,800
Other Income     0 0
Investment, Identifier [Axis]: American Community Homes, Inc. 1        
Investments in and Advances to Affiliates, Activity [Line Items]        
Interest Income     305 485
Dividend Income     0 0
Other Income     0 0
Investment, Identifier [Axis]: American Community Homes, Inc. 2        
Investments in and Advances to Affiliates, Activity [Line Items]        
Interest Income     150 238
Dividend Income     0 0
Other Income     0 0
Investment, Identifier [Axis]: American Community Homes, Inc. 3        
Investments in and Advances to Affiliates, Activity [Line Items]        
Interest Income     18 30
Dividend Income     0 0
Other Income     0 0
Investment, Identifier [Axis]: American Community Homes, Inc. 4        
Investments in and Advances to Affiliates, Activity [Line Items]        
Interest Income     69 107
Dividend Income     0 0
Other Income     0 0
Investment, Identifier [Axis]: American Community Homes, Inc. 5        
Investments in and Advances to Affiliates, Activity [Line Items]        
Interest Income     126 201
Dividend Income     0 0
Other Income     0 0
Investment, Identifier [Axis]: American Community Homes, Inc. 6        
Investments in and Advances to Affiliates, Activity [Line Items]        
Interest Income     0 2
Dividend Income     0 0
Other Income     0 0
Investment, Identifier [Axis]: American Community Homes, Inc. 7        
Investments in and Advances to Affiliates, Activity [Line Items]        
Interest Income     2 4
Dividend Income     0 0
Other Income     0 0
Investment, Identifier [Axis]: American Community Homes, Inc., Common stock        
Investments in and Advances to Affiliates, Activity [Line Items]        
Interest Income     0 0
Dividend Income     0 0
Other Income     0 0
Investment, Identifier [Axis]: American Community Homes, Inc., Revolver        
Investments in and Advances to Affiliates, Activity [Line Items]        
Interest Income     4 0
Dividend Income     0 0
Other Income     0 0
Investment, Identifier [Axis]: Ascent Midco, LLC, Class A units        
Investments in and Advances to Affiliates, Activity [Line Items]        
Interest Income     0 0
Dividend Income     117 108
Other Income     0 0
Investment, Identifier [Axis]: Familia Dental Group Holdings, LLC, Class A units        
Investments in and Advances to Affiliates, Activity [Line Items]        
Interest Income     0 0
Dividend Income     0 0
Other Income     0 0
Investment, Identifier [Axis]: HFZ Capital Group, LLC        
Investments in and Advances to Affiliates, Activity [Line Items]        
Interest Income     533 1,239
Dividend Income     0 0
Other Income     0 0
Investment, Identifier [Axis]: HFZ Capital Group, LLC 1        
Investments in and Advances to Affiliates, Activity [Line Items]        
Interest Income     191 424
Dividend Income     0 0
Other Income     0 0
Investment, Identifier [Axis]: MC Asset Management (Corporate), LLC        
Investments in and Advances to Affiliates, Activity [Line Items]        
Interest Income     538 1,133
Dividend Income     0 0
Other Income     0 0
Investment, Identifier [Axis]: MC Asset Management (Corporate), LLC (Delayed Draw)        
Investments in and Advances to Affiliates, Activity [Line Items]        
Interest Income     160 339
Dividend Income     0 0
Other Income     0 0
Investment, Identifier [Axis]: MC Asset Management (Corporate), LLC, LLC interest        
Investments in and Advances to Affiliates, Activity [Line Items]        
Interest Income     0 0
Dividend Income     0 0
Other Income     0 0
Investment, Identifier [Axis]: MRCC Senior Loan Fund I, LLC        
Investments in and Advances to Affiliates, Activity [Line Items]        
Interest Income     0 0
Dividend Income     1,600 1,800
Other Income     0 0
Investment, Identifier [Axis]: Mnine Holdings, Inc. 1        
Investments in and Advances to Affiliates, Activity [Line Items]        
Interest Income     0 0
Dividend Income     0 0
Other Income     0 0
Investment, Identifier [Axis]: Mnine Holdings, Inc. 2        
Investments in and Advances to Affiliates, Activity [Line Items]        
Interest Income     0 3
Dividend Income     0 0
Other Income     0 0
Investment, Identifier [Axis]: Mnine Holdings, Inc., Class B units        
Investments in and Advances to Affiliates, Activity [Line Items]        
Interest Income     0 433
Dividend Income     0 0
Other Income     0 0
Investment, Identifier [Axis]: Mnine Holdings, Inc., Revolver        
Investments in and Advances to Affiliates, Activity [Line Items]        
Interest Income     0 9
Dividend Income     0 0
Other Income     0 0
Investment, Identifier [Axis]: NECB Collections, LLC (Revolver)        
Investments in and Advances to Affiliates, Activity [Line Items]        
Interest Income     0 0
Dividend Income     0 0
Other Income     0 0
Investment, Identifier [Axis]: NECB Collections, LLC ,LLC units        
Investments in and Advances to Affiliates, Activity [Line Items]        
Interest Income     0 0
Dividend Income     0 0
Other Income     0 0
Investment, Identifier [Axis]: SFR Holdco 2, LLC (Delayed Draw)        
Investments in and Advances to Affiliates, Activity [Line Items]        
Interest Income     75 0
Dividend Income     0 0
Other Income     0 0
Investment, Identifier [Axis]: SFR Holdco 2, LLC (Equity Commitment)        
Investments in and Advances to Affiliates, Activity [Line Items]        
Interest Income     0 0
Dividend Income     0 0
Other Income     0 0
Investment, Identifier [Axis]: SFR Holdco, LLC (Delayed Draw)        
Investments in and Advances to Affiliates, Activity [Line Items]        
Interest Income     296 234
Dividend Income     0 0
Other Income     0 0
Investment, Identifier [Axis]: SFR Holdco, LLC (Equity Commitment)        
Investments in and Advances to Affiliates, Activity [Line Items]        
Interest Income     0 0
Dividend Income     0 0
Other Income     0 0
Investment, Identifier [Axis]: Second Avenue SFR Holdings II LLC, Revolver        
Investments in and Advances to Affiliates, Activity [Line Items]        
Interest Income       208
Dividend Income       0
Other Income       0
Investment, Identifier [Axis]: TJ Management HoldCo, LLC, Common stock        
Investments in and Advances to Affiliates, Activity [Line Items]        
Interest Income     0 0
Dividend Income     0 0
Other Income     0 0
Investment, Identifier [Axis]: TJ Management HoldCo, LLC, Revolver        
Investments in and Advances to Affiliates, Activity [Line Items]        
Interest Income     2 7
Dividend Income     0 0
Other Income     $ 0 $ 0