XML 45 R30.htm IDEA: XBRL DOCUMENT v3.21.2
FINANCIAL HIGHLIGHTS (Details) - $ / shares
 3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Per Share Operating Performance:        
Net asset value, beginning of year $ 19.24 $ 10.77 $ 12.91 $ 20.91
Total income (loss) 1.47 (0.04) 7.88 (10.12)
Total expenses (0.05) (0.03) (0.13) (0.09)
Net increase (decrease) in net asset value 1.42 (0.07) 7.75 (10.21)
Net asset value, end of year $ 20.66 $ 10.70 $ 20.66 $ 10.70
Total Return 7.38% (0.65%) 60.03% (48.83%)
Ratios to Average Net Assets        
Total income (loss) 6.37% (0.08%) 49.79% 20.96%
Management fees 0.75% 0.75% 0.75% 0.75%
Total expenses excluding management fees 0.33% 0.37% 0.34% 0.40%
Expenses waived 0.00% (0.22%) (0.08%) (0.25%)
Net expense excluding management fees 0.33% 0.15% 0.26% 0.15%
Net income (loss) 6.10% (0.31%) 49.03% 20.28%