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General and Administrative Expense (Details) - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Mar. 31, 2024
Mar. 31, 2023
Dec. 31, 2023
General and Administrative Expense [Abstract]      
Professional fees $ 521 $ 526 $ 2,178
Dues and subscriptions 435 429 800
Director fees and expenses 171 169 696
Insurance expense 169 167 675
Accounting and administrative costs 162 166 637
Valuation expense 144 173 853
Transfer agent expense 123 268 911
Printing and marketing expense 3 5 351
Other expenses 56 52 281
Total general and administrative expense $ 1,784 $ 1,955 $ 7,382