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General and Administrative Expense (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2023
Sep. 30, 2022
Sep. 30, 2023
Sep. 30, 2022
Dec. 31, 2022
General and Administrative Expense [Abstract]          
Professional fees $ 405 $ 223 $ 1,576 $ 1,375 $ 1,778
Transfer agent expense 189 296 736 890 1,124
Valuation expense 212 199 637 590 821
Dues and subscriptions 162 112 635 727 791
Accounting and administrative costs 282 180 606 482 524
Printing and marketing expense 284 672 558 705 708
Director fees and expenses 177 162 525 477 632
Insurance expense 168 157 504 662 833
Other expenses 52 26 183 53 67
Total general and administrative expense $ 1,931 $ 2,027 $ 5,960 $ 5,961 $ 7,278