Investments - Investments By Industry (Details) - USD ($)
$ in Thousands |
3 Months Ended |
12 Months Ended |
Mar. 31, 2026 |
Dec. 31, 2025 |
| Consolidated Schedule of Investments |
|
|
|
|
|
| Investments, amortized cost |
|
$ 2,482,858
|
|
$ 2,502,667
|
|
| Percentage of Total Portfolio |
|
100.00%
|
|
100.00%
|
|
| Investments at fair value |
|
$ 2,470,798
|
|
$ 2,508,441
|
|
| Percentage of Total Portfolio |
|
100.00%
|
|
100.00%
|
|
| Investment Holding |
|
|
|
|
|
| Consolidated Schedule of Investments |
|
|
|
|
|
| Investments, amortized cost |
|
$ 2,482,858
|
|
$ 2,502,667
|
|
| Percentage of Total Portfolio |
|
100.00%
|
|
100.00%
|
|
| Investments at fair value |
|
$ 2,470,798
|
|
$ 2,508,441
|
|
| Percentage of Total Portfolio |
|
100.00%
|
|
100.00%
|
|
| Investment Vehicles | Investment Holding |
|
|
|
|
|
| Consolidated Schedule of Investments |
|
|
|
|
|
| Investments, amortized cost |
|
$ 435,928
|
[1] |
$ 426,942
|
[2] |
| Percentage of Total Portfolio |
|
17.70%
|
[1] |
17.10%
|
[2] |
| Investments at fair value |
|
$ 394,691
|
[1] |
$ 399,051
|
[2] |
| Percentage of Total Portfolio |
|
16.10%
|
[1] |
15.90%
|
[2] |
| High Tech Industries | Investment Holding |
|
|
|
|
|
| Consolidated Schedule of Investments |
|
|
|
|
|
| Investments, amortized cost |
|
$ 254,788
|
|
$ 250,660
|
|
| Percentage of Total Portfolio |
|
10.40%
|
|
10.00%
|
|
| Investments at fair value |
|
$ 265,783
|
|
$ 271,004
|
|
| Percentage of Total Portfolio |
|
10.90%
|
|
10.80%
|
|
| Services: Business | Investment Holding |
|
|
|
|
|
| Consolidated Schedule of Investments |
|
|
|
|
|
| Investments, amortized cost |
|
$ 228,103
|
|
$ 228,836
|
|
| Percentage of Total Portfolio |
|
9.20%
|
|
9.10%
|
|
| Investments at fair value |
|
$ 248,936
|
|
$ 253,954
|
|
| Percentage of Total Portfolio |
|
10.10%
|
|
10.10%
|
|
| Healthcare & Pharmaceuticals | Investment Holding |
|
|
|
|
|
| Consolidated Schedule of Investments |
|
|
|
|
|
| Investments, amortized cost |
|
$ 216,073
|
|
$ 213,870
|
|
| Percentage of Total Portfolio |
|
8.70%
|
|
8.50%
|
|
| Investments at fair value |
|
$ 211,199
|
|
$ 210,063
|
|
| Percentage of Total Portfolio |
|
8.50%
|
|
8.40%
|
|
| Aerospace and Defense | Investment Holding |
|
|
|
|
|
| Consolidated Schedule of Investments |
|
|
|
|
|
| Investments, amortized cost |
|
$ 165,044
|
|
$ 237,633
|
|
| Percentage of Total Portfolio |
|
6.60%
|
|
9.50%
|
|
| Investments at fair value |
|
$ 173,680
|
|
$ 235,307
|
|
| Percentage of Total Portfolio |
|
7.00%
|
|
9.40%
|
|
| FIRE: Finance | Investment Holding |
|
|
|
|
|
| Consolidated Schedule of Investments |
|
|
|
|
|
| Investments, amortized cost |
|
$ 114,379
|
[3] |
$ 101,357
|
[4] |
| Percentage of Total Portfolio |
|
4.60%
|
[3] |
4.00%
|
[4] |
| Investments at fair value |
|
$ 133,385
|
[3] |
$ 114,894
|
[4] |
| Percentage of Total Portfolio |
|
5.40%
|
[3] |
4.60%
|
[4] |
| Beverage, Food & Tobacco | Investment Holding |
|
|
|
|
|
| Consolidated Schedule of Investments |
|
|
|
|
|
| Investments, amortized cost |
|
$ 132,041
|
|
$ 116,454
|
|
| Percentage of Total Portfolio |
|
5.30%
|
|
4.70%
|
|
| Investments at fair value |
|
$ 130,146
|
|
$ 115,105
|
|
| Percentage of Total Portfolio |
|
5.30%
|
|
4.60%
|
|
| Transportation: Cargo | Investment Holding |
|
|
|
|
|
| Consolidated Schedule of Investments |
|
|
|
|
|
| Investments, amortized cost |
|
$ 100,320
|
|
$ 96,830
|
|
| Percentage of Total Portfolio |
|
4.00%
|
|
3.90%
|
|
| Investments at fair value |
|
$ 111,437
|
|
$ 108,504
|
|
| Percentage of Total Portfolio |
|
4.50%
|
|
4.30%
|
|
| Environmental Industries | Investment Holding |
|
|
|
|
|
| Consolidated Schedule of Investments |
|
|
|
|
|
| Investments, amortized cost |
|
$ 99,000
|
|
$ 85,843
|
|
| Percentage of Total Portfolio |
|
4.00%
|
|
3.40%
|
|
| Investments at fair value |
|
$ 99,008
|
|
$ 87,491
|
|
| Percentage of Total Portfolio |
|
4.00%
|
|
3.50%
|
|
| Automotive | Investment Holding |
|
|
|
|
|
| Consolidated Schedule of Investments |
|
|
|
|
|
| Investments, amortized cost |
|
$ 102,659
|
|
$ 111,100
|
|
| Percentage of Total Portfolio |
|
4.10%
|
|
4.40%
|
|
| Investments at fair value |
|
$ 94,680
|
|
$ 105,969
|
|
| Percentage of Total Portfolio |
|
3.80%
|
|
4.20%
|
|
| Construction & Building | Investment Holding |
|
|
|
|
|
| Consolidated Schedule of Investments |
|
|
|
|
|
| Investments, amortized cost |
|
$ 85,329
|
|
$ 76,871
|
|
| Percentage of Total Portfolio |
|
3.40%
|
|
3.10%
|
|
| Investments at fair value |
|
$ 86,448
|
|
$ 77,815
|
|
| Percentage of Total Portfolio |
|
3.50%
|
|
3.10%
|
|
| Consumer Goods: Non-Durable | Investment Holding |
|
|
|
|
|
| Consolidated Schedule of Investments |
|
|
|
|
|
| Investments, amortized cost |
|
$ 71,132
|
|
$ 70,788
|
|
| Percentage of Total Portfolio |
|
2.90%
|
|
2.80%
|
|
| Investments at fair value |
|
$ 67,906
|
|
$ 67,550
|
|
| Percentage of Total Portfolio |
|
2.70%
|
|
2.70%
|
|
| Services: Consumer | Investment Holding |
|
|
|
|
|
| Consolidated Schedule of Investments |
|
|
|
|
|
| Investments, amortized cost |
|
$ 65,128
|
|
$ 64,981
|
|
| Percentage of Total Portfolio |
|
2.60%
|
|
2.60%
|
|
| Investments at fair value |
|
$ 62,701
|
|
$ 62,729
|
|
| Percentage of Total Portfolio |
|
2.50%
|
|
2.50%
|
|
| Telecommunications | Investment Holding |
|
|
|
|
|
| Consolidated Schedule of Investments |
|
|
|
|
|
| Investments, amortized cost |
|
$ 55,713
|
|
$ 54,768
|
|
| Percentage of Total Portfolio |
|
2.20%
|
|
2.20%
|
|
| Investments at fair value |
|
$ 55,175
|
|
$ 54,019
|
|
| Percentage of Total Portfolio |
|
2.20%
|
|
2.20%
|
|
| Capital Equipment | Investment Holding |
|
|
|
|
|
| Consolidated Schedule of Investments |
|
|
|
|
|
| Investments, amortized cost |
|
$ 38,117
|
|
$ 49,524
|
|
| Percentage of Total Portfolio |
|
1.50%
|
|
2.00%
|
|
| Investments at fair value |
|
$ 48,225
|
|
$ 56,654
|
|
| Percentage of Total Portfolio |
|
2.00%
|
|
2.30%
|
|
| Chemicals, Plastics & Rubber | Investment Holding |
|
|
|
|
|
| Consolidated Schedule of Investments |
|
|
|
|
|
| Investments, amortized cost |
|
$ 47,896
|
|
$ 48,895
|
|
| Percentage of Total Portfolio |
|
1.90%
|
|
2.00%
|
|
| Investments at fair value |
|
$ 46,585
|
|
$ 47,767
|
|
| Percentage of Total Portfolio |
|
1.90%
|
|
1.90%
|
|
| Consumer Goods: Durable | Investment Holding |
|
|
|
|
|
| Consolidated Schedule of Investments |
|
|
|
|
|
| Investments, amortized cost |
|
$ 41,170
|
|
$ 53,098
|
|
| Percentage of Total Portfolio |
|
1.70%
|
|
2.10%
|
|
| Investments at fair value |
|
$ 39,901
|
|
$ 51,259
|
|
| Percentage of Total Portfolio |
|
1.60%
|
|
2.00%
|
|
| FIRE: Insurance | Investment Holding |
|
|
|
|
|
| Consolidated Schedule of Investments |
|
|
|
|
|
| Investments, amortized cost |
|
$ 35,006
|
[3] |
$ 30,653
|
[4] |
| Percentage of Total Portfolio |
|
1.40%
|
[3] |
1.20%
|
[4] |
| Investments at fair value |
|
$ 35,104
|
[3] |
$ 30,829
|
[4] |
| Percentage of Total Portfolio |
|
1.40%
|
[3] |
1.20%
|
[4] |
| Hotel, Gaming & Leisure | Investment Holding |
|
|
|
|
|
| Consolidated Schedule of Investments |
|
|
|
|
|
| Investments, amortized cost |
|
$ 32,611
|
|
$ 24,284
|
|
| Percentage of Total Portfolio |
|
1.30%
|
|
1.00%
|
|
| Investments at fair value |
|
$ 32,923
|
|
$ 24,708
|
|
| Percentage of Total Portfolio |
|
1.30%
|
|
1.00%
|
|
| Transportation: Consumer | Investment Holding |
|
|
|
|
|
| Consolidated Schedule of Investments |
|
|
|
|
|
| Investments, amortized cost |
|
$ 31,539
|
|
$ 25,839
|
|
| Percentage of Total Portfolio |
|
1.30%
|
|
1.00%
|
|
| Investments at fair value |
|
$ 31,849
|
|
$ 26,118
|
|
| Percentage of Total Portfolio |
|
1.30%
|
|
1.00%
|
|
| Media: Diversified & Production | Investment Holding |
|
|
|
|
|
| Consolidated Schedule of Investments |
|
|
|
|
|
| Investments, amortized cost |
|
$ 36,877
|
|
$ 34,714
|
|
| Percentage of Total Portfolio |
|
1.50%
|
|
1.40%
|
|
| Investments at fair value |
|
$ 28,832
|
|
$ 29,461
|
|
| Percentage of Total Portfolio |
|
1.20%
|
|
1.20%
|
|
| Wholesale | Investment Holding |
|
|
|
|
|
| Consolidated Schedule of Investments |
|
|
|
|
|
| Investments, amortized cost |
|
$ 37,762
|
|
$ 29,346
|
|
| Percentage of Total Portfolio |
|
1.50%
|
|
1.20%
|
|
| Investments at fair value |
|
$ 23,396
|
|
$ 24,546
|
|
| Percentage of Total Portfolio |
|
0.90%
|
|
1.00%
|
|
| Retail | Investment Holding |
|
|
|
|
|
| Consolidated Schedule of Investments |
|
|
|
|
|
| Investments, amortized cost |
|
$ 26,460
|
|
$ 26,314
|
|
| Percentage of Total Portfolio |
|
1.10%
|
|
1.10%
|
|
| Investments at fair value |
|
$ 19,180
|
|
$ 17,613
|
|
| Percentage of Total Portfolio |
|
0.80%
|
|
0.70%
|
|
| Containers, Packaging & Glass | Investment Holding |
|
|
|
|
|
| Consolidated Schedule of Investments |
|
|
|
|
|
| Investments, amortized cost |
|
$ 9,680
|
|
$ 9,079
|
|
| Percentage of Total Portfolio |
|
0.40%
|
|
0.40%
|
|
| Investments at fair value |
|
$ 9,769
|
|
$ 9,182
|
|
| Percentage of Total Portfolio |
|
0.40%
|
|
0.40%
|
|
| Utilities: Electric | Investment Holding |
|
|
|
|
|
| Consolidated Schedule of Investments |
|
|
|
|
|
| Investments, amortized cost |
|
$ 8,009
|
|
$ 8,023
|
|
| Percentage of Total Portfolio |
|
0.30%
|
|
0.30%
|
|
| Investments at fair value |
|
$ 7,946
|
|
$ 8,020
|
|
| Percentage of Total Portfolio |
|
0.30%
|
|
0.30%
|
|
| Media: Advertising, Printing & Publishing | Investment Holding |
|
|
|
|
|
| Consolidated Schedule of Investments |
|
|
|
|
|
| Investments, amortized cost |
|
$ 4,673
|
|
$ 3,090
|
|
| Percentage of Total Portfolio |
|
0.20%
|
|
0.10%
|
|
| Investments at fair value |
|
$ 4,277
|
|
$ 2,857
|
|
| Percentage of Total Portfolio |
|
0.20%
|
|
0.10%
|
|
| Utilities: Water | Investment Holding |
|
|
|
|
|
| Consolidated Schedule of Investments |
|
|
|
|
|
| Investments, amortized cost |
|
$ 3,056
|
|
$ 2,731
|
|
| Percentage of Total Portfolio |
|
0.10%
|
|
0.10%
|
|
| Investments at fair value |
|
$ 3,080
|
|
$ 2,757
|
|
| Percentage of Total Portfolio |
|
0.10%
|
|
0.10%
|
|
| Media: Broadcasting & Subscription | Investment Holding |
|
|
|
|
|
| Consolidated Schedule of Investments |
|
|
|
|
|
| Investments, amortized cost |
|
$ 2,879
|
|
$ 2,876
|
|
| Percentage of Total Portfolio |
|
0.10%
|
|
0.10%
|
|
| Investments at fair value |
|
$ 2,927
|
|
$ 2,954
|
|
| Percentage of Total Portfolio |
|
0.10%
|
|
0.10%
|
|
| FIRE: Real Estate | Investment Holding |
|
|
|
|
|
| Consolidated Schedule of Investments |
|
|
|
|
|
| Investments, amortized cost |
[3] |
$ 779
|
|
|
|
| Percentage of Total Portfolio |
[3] |
0.00%
|
|
|
|
| Investments at fair value |
[3] |
$ 864
|
|
|
|
| Percentage of Total Portfolio |
[3] |
0.00%
|
|
|
|
| Metals & Mining | Investment Holding |
|
|
|
|
|
| Consolidated Schedule of Investments |
|
|
|
|
|
| Investments, amortized cost |
|
$ 707
|
|
$ 9,184
|
|
| Percentage of Total Portfolio |
|
0.00%
|
|
0.40%
|
|
| Investments at fair value |
|
$ 765
|
|
$ 9,158
|
|
| Percentage of Total Portfolio |
|
0.00%
|
|
0.40%
|
|
| Consumer Goods: Wholesale | Investment Holding |
|
|
|
|
|
| Consolidated Schedule of Investments |
|
|
|
|
|
| Investments, amortized cost |
|
|
|
$ 8,084
|
|
| Percentage of Total Portfolio |
|
|
|
0.30%
|
|
| Investments at fair value |
|
|
|
$ 1,103
|
|
| Percentage of Total Portfolio |
|
|
|
0.00%
|
|
|
|