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Note 11 - Distributions - Distribution Activity (Details) - USD ($) $ / shares in Units, $ in Thousands		12 Months Ended
	Feb. 28, 2025	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Distributions declared per share (in dollars per share)		$ 1.37	$ 1.37	$ 1.28
Dividends, cash		$ 44,434	$ 41,881
Dividends, shares (in shares)		194,526	145,743
Dividends, stock		$ 2,093	$ 1,833
O 2025 M3 Dividends [Member] | Forecast [Member]
Record date	Mar. 17, 2025
Payment date	Apr. 15, 2025
Distributions declared per share (in dollars per share)	$ 0.11
O 2025 M4 Dividends [Member] | Forecast [Member]
Record date	Apr. 16, 2025
Payment date	May 15, 2025
Distributions declared per share (in dollars per share)	$ 0.11
O 2024 M10 1 Dividends [Member]
Record date		Feb. 18, 2025
Payment date		Mar. 14, 2025
Distributions declared per share (in dollars per share)		$ 0.11
Dividends, cash		$ 0
Dividends, shares (in shares)		0
Dividends, stock		$ 0
O 2025 M5 Dividends [Member] | Forecast [Member]
Record date	May 16, 2025
Payment date	Jun. 13, 2025
Distributions declared per share (in dollars per share)	$ 0.11
O 2024 M10 2 Dividends [Member]
Record date		Jan. 16, 2025
Payment date		Feb. 14, 2025
Distributions declared per share (in dollars per share)		$ 0.11
Dividends, cash		$ 4,226
Dividends, shares (in shares)		18,428
Dividends, stock		$ 179
O 2024 M10 3 Dividends [Member]
Record date		Dec. 16, 2024
Payment date		Jan. 15, 2025
Distributions declared per share (in dollars per share)		$ 0.11
Dividends, cash		$ 4,235
Dividends, shares (in shares)		16,428
Dividends, stock		$ 151
O 2024 M7 1 Dividends [Member]
Record date		Nov. 15, 2024
Payment date		Dec. 13, 2024
Distributions declared per share (in dollars per share)		$ 0.11
Dividends, cash		$ 4,124
Dividends, shares (in shares)		15,584
Dividends, stock		$ 147
O 2024 M7 2 Dividends [Member]
Record date		Oct. 17, 2024
Payment date		Nov. 14, 2024
Distributions declared per share (in dollars per share)		$ 0.11
Dividends, cash		$ 4,022
Dividends, shares (in shares)		17,706
Dividends, stock		$ 165
O 2024 M7 3 Dividends [Member]
Record date		Sep. 16, 2024
Payment date		Oct. 16, 2024
Distributions declared per share (in dollars per share)		$ 0.11
Dividends, cash		$ 3,914
Dividends, shares (in shares)		18,539
Dividends, stock		$ 195
O 2024 M4 1 Dividends [Member]
Record date		Aug. 16, 2024
Payment date		Sep. 13, 2024
Distributions declared per share (in dollars per share)		$ 0.11
Dividends, cash		$ 3,818
Dividends, shares (in shares)		17,441
Dividends, stock		$ 192
O 2024 M4 2 Dividends [Member]
Record date		Jul. 17, 2024
Payment date		Aug. 15, 2024
Distributions declared per share (in dollars per share)		$ 0.11
Dividends, cash		$ 3,775
Dividends, shares (in shares)		16,852
Dividends, stock		$ 192
O 2024 M4 3 Dividends [Member]
Record date		Jun. 17, 2024
Payment date		Jul. 16, 2024
Distributions declared per share (in dollars per share)		$ 0.11
Dividends, cash		$ 3,766
Dividends, shares (in shares)		15,860
Dividends, stock		$ 199
O 2024 M2 1 Dividends [Member]
Record date		May 17, 2024
Payment date		Jun. 14, 2024
Distributions declared per share (in dollars per share)		$ 0.11
Dividends, cash		$ 3,701
Dividends, shares (in shares)		16,686
Dividends, stock		$ 201
O 2024 M2 2 Dividends [Member]
Record date		Apr. 18, 2024
Payment date		May 15, 2024
Distributions declared per share (in dollars per share)		$ 0.11
Dividends, cash		$ 3,654
Dividends, shares (in shares)		16,687
Dividends, stock		$ 199
O 2024 M2 3 Dividends [Member]
Record date		Mar. 19, 2024
Payment date		Apr. 16, 2024
Distributions declared per share (in dollars per share)		$ 0.05
Dividends, cash		$ 1,625
Dividends, shares (in shares)		7,598
Dividends, stock		$ 85
O 2024 M2 4 Dividends [Member]
Record date		Mar. 19, 2024
Payment date		Apr. 16, 2024
Distributions declared per share (in dollars per share)		$ 0.11
Dividends, cash		$ 3,574
Dividends, shares (in shares)		16,717
Dividends, stock		$ 188
O 2023 M10 1 Dividends [Member]
Record date			Feb. 16, 2024
Payment date			Mar. 15, 2024
Distributions declared per share (in dollars per share)			$ 0.11
Dividends, cash			$ 3,463
Dividends, shares (in shares)			18,257
Dividends, stock			$ 210
O 2023 M10 2 Dividends [Member]
Record date			Jan. 18, 2024
Payment date			Feb. 14, 2024
Distributions declared per share (in dollars per share)			$ 0.11
Dividends, cash			$ 3,462
Dividends, shares (in shares)			15,873
Dividends, stock			$ 210
O 2023 M10 3 Dividends [Member]
Record date			Dec. 19, 2023
Payment date			Jan. 16, 2024
Distributions declared per share (in dollars per share)			$ 0.11
Dividends, cash			$ 3,472
Dividends, shares (in shares)			14,563
Dividends, stock			$ 199
O 2023 M10 4 Dividends [Member]
Record date			Nov. 17, 2023
Payment date			Dec. 15, 2023
Distributions declared per share (in dollars per share)			$ 0.05
Dividends, cash			$ 1,574
Dividends, shares (in shares)			7,137
Dividends, stock			$ 93
O 2023 M7 1 Dividends [Member]
Record date			Nov. 17, 2023
Payment date			Dec. 15, 2023
Distributions declared per share (in dollars per share)			$ 0.11
Dividends, cash			$ 3,463
Dividends, shares (in shares)			15,701
Dividends, stock			$ 206
O 2023 M7 2 Dividends [Member]
Record date			Oct. 18, 2023
Payment date			Nov. 15, 2023
Distributions declared per share (in dollars per share)			$ 0.11
Dividends, cash			$ 3,493
Dividends, shares (in shares)			14,022
Dividends, stock			$ 173
O 2023 M7 3 Dividends [Member]
Record date			Sep. 19, 2023
Payment date			Oct. 16, 2023
Distributions declared per share (in dollars per share)			$ 0.11
Dividends, cash			$ 3,445
Dividends, shares (in shares)			15,067
Dividends, stock			$ 184
O 2023 M4 1 Dividends [Member]
Record date			Aug. 17, 2023
Payment date			Sep. 15, 2023
Distributions declared per share (in dollars per share)			$ 0.11
Dividends, cash			$ 3,458
Dividends, shares (in shares)			8,665
Dividends, stock			$ 106
O 2023 M4 2 Dividends [Member]
Record date			Jul. 18, 2023
Payment date			Aug. 15, 2023
Distributions declared per share (in dollars per share)			$ 0.11
Dividends, cash			$ 3,427
Dividends, shares (in shares)			8,307
Dividends, stock			$ 105
O 2023 M4 3 Dividends [Member]
Record date			Jun. 16, 2023
Payment date			Jul. 14, 2023
Distributions declared per share (in dollars per share)			$ 0.11
Dividends, cash			$ 3,434
Dividends, shares (in shares)			7,424
Dividends, stock			$ 96
O 2023 M2 1 Dividends [Member]
Record date			May 18, 2023
Payment date			Jun. 14, 2023
Distributions declared per share (in dollars per share)			$ 0.11
Dividends, cash			$ 3,087
Dividends, shares (in shares)			7,128
Dividends, stock			$ 86
O 2023 M2 2 Dividends [Member]
Record date			Apr. 18, 2023
Payment date			May 16, 2023
Distributions declared per share (in dollars per share)			$ 0.11
Dividends, cash			$ 3,068
Dividends, shares (in shares)			6,705
Dividends, stock			$ 84
O 2023 M2 3 Dividends [Member]
Record date			Mar. 17, 2023
Payment date			Apr. 14, 2023
Distributions declared per share (in dollars per share)			$ 0.11
Dividends, cash			$ 3,035
Dividends, shares (in shares)			6,894
Dividends, stock			$ 81

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