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General and Administrative Expense (Tables)
12 Months Ended
Dec. 31, 2022
General and Administrative Expense [Abstract]  
General and Administrative Expense
General and administrative expense consisted of the following items for the years ended December 31, 2022, 2021 and 2020:
Years Ended December 31,
202220212020
Professional fees$1,778 $4,214 $1,490 
Transfer agent expense1,124 1,290 1,189 
Insurance expense833 612 489 
Valuation expense821 904 999 
Dues and subscriptions791 411 342 
Printing and marketing expense708 990 378 
Director fees and expenses632 516 450 
Accounting and administrative costs524 759 680 
Other expenses67 109 68 
Total general and administrative expense$7,278 $9,805 $6,085