Note 7 - Borrowings (Details Textual)
$ / shares in Units, $ in Thousands |
|
|
|
|
|
|
|
|
|
|
|
3 Months Ended |
12 Months Ended |
|
|
|
|
|
|
Apr. 26, 2026 |
Feb. 26, 2026 |
Jan. 28, 2026
USD ($)
|
Sep. 04, 2025
USD ($)
|
May 23, 2025
USD ($)
|
Apr. 25, 2025 |
Apr. 17, 2025 |
Oct. 17, 2024
USD ($)
|
Jun. 21, 2024
USD ($)
|
Jun. 19, 2024 |
May 24, 2023
USD ($)
|
Mar. 31, 2026
USD ($)
$ / shares
shares
|
Mar. 31, 2025
USD ($)
$ / shares
|
Dec. 31, 2025
USD ($)
$ / shares
|
Dec. 15, 2025
USD ($)
|
Dec. 31, 2024
$ / shares
|
Jun. 29, 2023
USD ($)
|
Jun. 15, 2022
USD ($)
$ / shares
|
Mar. 30, 2021
USD ($)
$ / shares
|
Apr. 21, 2020
USD ($)
|
| Asset Coverage to Borrowings, Ratio, Percent |
|
|
|
|
|
|
|
|
|
|
|
174.00%
|
|
|
|
|
|
|
|
|
| Restricted Investments |
|
|
|
|
|
|
|
|
|
|
|
$ 2,634
|
|
$ 2,463
|
|
|
|
|
|
|
| Debt Instrument, Face Amount |
|
|
|
|
|
|
|
|
|
|
|
734,200
|
|
$ 806,750
|
|
|
|
|
|
|
| Gain (Loss) on Extinguishment of Debt |
|
|
|
|
|
|
|
|
|
|
|
$ (1,432)
|
$ 0
|
|
|
|
|
|
|
|
| Share Price (in dollars per share) | $ / shares |
|
|
|
|
|
|
|
|
|
|
|
$ 4.21
|
$ 9.42
|
$ 6.45
|
|
$ 8.99
|
|
|
|
|
| Debt Conversion, Original Debt, Amount |
|
|
|
|
|
|
|
|
|
|
|
$ 15,050
|
$ 0
|
|
|
|
|
|
|
|
| Conversion of 2030 Notes Into Common Stock [Member] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Debt Conversion, Original Debt, Amount |
|
|
|
|
|
|
|
|
|
|
|
$ 15,100
|
|
|
|
|
|
|
|
|
| Debt Conversion, Converted Instrument, Shares Issued (in shares) | shares |
|
|
|
|
|
|
|
|
|
|
|
2,118,250
|
|
|
|
|
|
|
|
|
| Debt Instrument, Convertible, Weighted Average Conversion Price (in dollars per share) | $ / shares |
|
|
|
|
|
|
|
|
|
|
|
$ 7.12
|
|
|
|
|
|
|
|
|
| Debt Instrument, Convertible, Accelerated Unamortized Debt Issuance Costs |
|
|
|
|
|
|
|
|
|
|
|
$ 1,300
|
|
|
|
|
|
|
|
|
| Key Facility [Member] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Line of Credit Facility, Maximum Borrowing Capacity, Accordian Feature |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
$ 150,000
|
|
|
|
| Line of Credit Facility, Maximum Borrowing Capacity |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
$ 300,000
|
|
|
|
| Line of Credit Facility, Advance Rate of Eligible Debt Investments |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
60.00%
|
|
|
|
| Long-Term Debt, Weighted Average Interest Rate, over Time |
|
|
|
|
|
|
|
|
|
|
|
6.85%
|
7.60%
|
|
|
|
|
|
|
|
| Line of Credit Facility, Unused Capacity, Commitment Fee Percentage |
|
|
|
|
|
|
|
|
|
|
|
0.75%
|
|
|
|
|
|
|
|
|
| Line of Credit Facility, Current Borrowing Capacity |
|
|
|
|
|
|
|
|
|
|
|
$ 105,000
|
|
$ 150,000
|
|
|
|
|
|
|
| Line of Credit Facility, Remaining Borrowing Capacity |
|
|
|
|
|
|
|
|
|
|
|
23,300
|
|
49,600
|
|
|
|
|
|
|
| Debt Instrument, Face Amount |
|
|
|
|
|
|
|
|
|
|
|
$ 150,000
|
|
$ 150,000
|
|
|
|
|
|
|
| Key Facility [Member] | Prime Rate [Member] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Debt Instrument, Basis Spread on Variable Rate |
|
0.10%
|
|
|
|
|
|
|
|
0.25%
|
|
|
|
|
|
|
|
|
|
|
| Debt Instrument, Variable Rate |
|
|
|
|
|
|
|
|
|
|
|
6.75%
|
|
6.75%
|
|
|
|
|
|
|
| NYL Facility [Member] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Line of Credit Facility, Maximum Borrowing Capacity |
|
|
|
|
|
|
|
|
|
|
$ 250,000
|
|
|
|
|
|
|
|
|
$ 100,000
|
| Line of Credit Facility, Current Borrowing Capacity |
|
|
|
|
|
|
|
|
|
|
|
$ 69,000
|
|
$ 69,000
|
|
|
|
|
|
|
| Line of Credit Facility, Remaining Borrowing Capacity |
|
|
|
|
|
|
|
|
|
|
|
2,600
|
|
1,900
|
|
|
|
|
|
|
| Line of Credit Facility, Maximum Borrowing Capacity, Accordion Feature |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
$ 200,000
|
| Line of Credit Facility, Advance Rate |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
67.00%
|
| Line of Credit Facility, Change in Maximum Borrowing Capacity |
|
|
|
|
|
|
|
|
|
|
$ 50,000
|
|
|
|
|
|
|
|
|
|
| Debt Instrument, Interest Rate, Stated Percentage |
|
|
|
|
|
|
|
|
|
|
4.60%
|
|
|
|
|
|
|
|
|
|
| Long-Term Line of Credit |
|
|
|
|
|
|
|
|
|
|
|
$ 181,000
|
|
$ 181,000
|
|
|
|
|
|
|
| Line of Credit Facility, Interest Rate at Period End |
|
|
|
|
|
|
|
|
|
|
|
6.57%
|
|
6.54%
|
|
|
|
|
|
|
| Restricted Investments |
|
|
|
|
|
|
|
|
|
|
|
$ 1,400
|
|
$ 1,400
|
|
|
|
|
|
|
| Debt Instrument, Face Amount |
|
|
|
|
|
|
|
|
|
|
|
250,000
|
|
250,000
|
|
|
|
|
|
|
| NYL Facility [Member] | Three Year I Curve [Member] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Debt Instrument, Basis Spread on Variable Rate |
|
|
|
|
|
2.95%
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Nuveen Facility [Member] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Line of Credit Facility, Maximum Borrowing Capacity, Accordian Feature |
|
|
|
|
|
|
|
|
$ 200,000
|
|
|
|
|
|
|
|
|
|
|
|
| Line of Credit Facility, Maximum Borrowing Capacity |
|
|
|
|
$ 200,000
|
|
|
|
$ 100,000
|
|
|
|
|
|
|
|
|
|
|
|
| Line of Credit Facility, Current Borrowing Capacity |
|
|
|
|
|
|
|
|
|
|
|
110,000
|
|
110,000
|
|
|
|
|
|
|
| Line of Credit Facility, Remaining Borrowing Capacity |
|
|
|
|
|
|
|
|
|
|
|
22,300
|
|
12,100
|
|
|
|
|
|
|
| Line of Credit Facility, Advance Rate |
|
|
|
|
|
|
|
|
67.50%
|
|
|
|
|
|
|
|
|
|
|
|
| Line of Credit Facility, Change in Maximum Borrowing Capacity |
|
|
|
|
$ 100,000
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Long-Term Line of Credit |
|
|
|
|
|
|
|
|
|
|
|
$ 90,000
|
|
$ 90,000
|
|
|
|
|
|
|
| Line of Credit Facility, Interest Rate at Period End |
|
|
|
|
|
|
|
|
|
|
|
7.21%
|
|
7.21%
|
|
|
|
|
|
|
| Restricted Investments |
|
|
|
|
|
|
|
|
|
|
|
$ 1,300
|
|
$ 1,100
|
|
|
|
|
|
|
| Debt Instrument, Face Amount |
|
|
|
|
|
|
|
|
|
|
|
200,000
|
|
200,000
|
|
|
|
|
|
|
| Nuveen Facility [Member] | Selected Interest Rates (Daily) [Member] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Debt Instrument, Basis Spread on Variable Rate |
|
|
|
|
2.95%
|
|
|
|
3.15%
|
|
|
|
|
|
|
|
|
|
|
|
| The 2026 Notes [Member] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Debt Instrument, Interest Rate, Stated Percentage |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
4.875%
|
|
| Debt Instrument, Face Amount |
|
|
|
|
|
|
|
|
|
|
|
0
|
|
57,500
|
|
|
|
|
$ 57,500
|
|
| Gain (Loss) on Extinguishment of Debt |
|
|
$ 100
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| The 2026 Notes Underwriter Option [Member] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Debt Instrument, Face Amount |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
$ 7,500
|
|
| Debt Instrument, Convertible, Conversion Price (in dollars per share) | $ / shares |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
$ 25
|
|
| The 2027 Notes [Member] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Debt Instrument, Interest Rate, Stated Percentage |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
6.25%
|
|
|
| Debt Instrument, Face Amount |
|
|
|
|
|
|
|
|
|
|
|
57,500
|
|
57,500
|
|
|
|
$ 50,000
|
|
|
| The 2027 Notes Underwriter Option [Member] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Debt Instrument, Face Amount |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
$ 7,500
|
|
|
| Debt Instrument, Convertible, Conversion Price (in dollars per share) | $ / shares |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
$ 25
|
|
|
| The 2028 Notes [Member] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Debt Instrument, Interest Rate, Stated Percentage |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
7.00%
|
|
|
|
|
|
| Debt Instrument, Face Amount |
|
|
|
|
|
|
|
|
|
|
|
$ 57,500
|
|
$ 57,500
|
$ 57,500
|
|
|
|
|
|
| Debt Instrument, Redemption Price, Percentage |
|
|
|
|
|
|
|
|
|
|
|
|
|
100.00%
|
|
|
|
|
|
|
| The 2028 Notes [Member] | Treasury Rate [Member] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Debt Instrument, Basis Spread on Variable Rate |
|
|
|
|
|
|
|
|
|
|
|
|
|
0.50%
|
|
|
|
|
|
|
| The 2030 Convertible Notes [Member] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Debt Instrument, Interest Rate, Stated Percentage |
|
|
|
5.50%
|
|
|
|
|
|
|
|
5.50%
|
|
|
|
|
|
|
|
|
| Debt Instrument, Face Amount |
|
|
|
$ 40,000
|
|
|
|
|
|
|
|
$ 16,450
|
|
$ 31,500
|
|
|
|
|
|
|
| Debt Instrument, Convertible, Conversion Price (in dollars per share) | $ / shares |
|
|
|
|
|
|
|
|
|
|
|
$ 6.98
|
|
|
|
|
|
|
|
|
| Debt Instrument, Redemption Price, Percentage |
|
|
|
|
|
|
|
|
|
|
|
100.00%
|
|
|
|
|
|
|
|
|
| Proceeds from Convertible Debt |
|
|
|
$ 36,600
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Debt Instrument, Maturity Date |
|
|
|
Sep. 04, 2030
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Debt Instrument, Convertible, Threshold Consecutive Trading Days |
|
|
|
|
|
|
|
|
|
|
|
5
|
5
|
|
|
|
|
|
|
|
| Debt Instrument, Convertible, Number of Equity Instruments |
|
|
|
|
|
|
|
|
|
|
|
2,356,734
|
|
|
|
|
|
|
|
|
| Share Price (in dollars per share) | $ / shares |
|
|
|
|
|
|
|
|
|
|
|
$ 4.21
|
|
|
|
|
|
|
|
|
| Debt Instrument, Convertible, Maximum Beneficial Ownership Percentage |
|
|
|
|
|
|
|
|
|
|
|
4.99%
|
|
|
|
|
|
|
|
|
| Convertible Debt |
|
|
|
|
|
|
|
|
|
|
|
$ 16,500
|
$ 0
|
31,500
|
|
|
|
|
|
|
| The 2031 Convertible Notes [Member] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Debt Instrument, Interest Rate, Stated Percentage |
|
|
|
|
|
|
|
7.125%
|
|
|
|
|
|
|
|
|
|
|
|
|
| Debt Instrument, Face Amount |
|
|
|
|
|
|
|
$ 20,000
|
|
|
|
$ 2,750
|
|
2,750
|
|
|
|
|
|
|
| Debt Instrument, Convertible, Conversion Price (in dollars per share) | $ / shares |
|
|
|
|
|
|
|
|
|
|
|
$ 6.98
|
|
|
|
|
|
|
|
|
| Debt Instrument, Redemption Price, Percentage |
|
|
|
|
|
|
100.00%
|
100.00%
|
|
|
|
|
|
|
|
|
|
|
|
|
| Proceeds from Convertible Debt |
|
|
|
|
|
|
|
$ 18,600
|
|
|
|
|
|
|
|
|
|
|
|
|
| Debt Instrument, Maturity Date |
|
|
|
|
|
|
|
Oct. 17, 2031
|
|
|
|
|
|
|
|
|
|
|
|
|
| Debt Instrument, Convertible, Threshold Consecutive Trading Days |
|
|
|
|
|
|
|
|
|
|
|
5
|
|
|
|
|
|
|
|
|
| Debt Instrument, Convertible, Number of Equity Instruments |
|
|
|
|
|
|
|
|
|
|
|
393,983
|
|
|
|
|
|
|
|
|
| Debt Instrument, Convertible, Maximum Beneficial Ownership Percentage |
|
|
|
|
|
|
|
4.99%
|
|
|
|
|
|
|
|
|
|
|
|
|
| Convertible Debt |
|
|
|
|
|
|
|
|
|
|
|
$ 2,800
|
|
$ 2,800
|
|
|
|
|
|
|
| Debt Instrument, Interest Rate, Increase From Failure to Maintain Investment Rating |
|
|
|
|
|
|
|
1.00%
|
|
|
|
|
|
|
|
|
|
|
|
|
| Debt Instrument, Interest Rate, Increase From Default |
|
|
|
|
|
|
|
2.00%
|
|
|
|
|
|
|
|
|
|
|
|
|
| Minimum [Member] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Asset Coverage to Borrowings, Ratio, Percent |
|
|
|
|
|
|
|
|
|
|
|
150.00%
|
|
|
|
|
|
|
|
|
| Minimum [Member] | Key Facility [Member] | Prime Rate [Member] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Debt Instrument, Basis Spread on Variable Rate |
4.10%
|
|
|
|
|
|
|
|
|
4.25%
|
|
|
|
|
|
|
|
|
|
|
| Minimum [Member] | Nuveen Facility [Member] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Debt Instrument, Interest Rate, Stated Percentage |
|
|
|
|
5.00%
|
|
|
|
5.00%
|
|
|
|
|
|
|
|
|
|
|
|
| Minimum [Member] | Nuveen Facility [Member] | Selected Interest Rates (Daily) [Member] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Debt Instrument, Basis Spread on Variable Rate, Treasury Yield Maturity (Year) |
|
|
|
|
|
|
|
|
3 years
|
|
|
|
|
|
|
|
|
|
|
|
| Maximum [Member] | Nuveen Facility [Member] | Selected Interest Rates (Daily) [Member] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Debt Instrument, Basis Spread on Variable Rate, Treasury Yield Maturity (Year) |
|
|
|
|
|
|
|
|
5 years
|
|
|
|
|
|
|
|
|
|
|
|
| Weighted Average [Member] | Nuveen Facility [Member] | Selected Interest Rates (Daily) [Member] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Debt Instrument, Basis Spread on Variable Rate, Treasury Yield Maturity (Year) |
|
|
|
|
|
|
|
|
4 years 10 months 17 days
|
|
|
|
|
|
|
|
|
|
|
|