XML 45 R30.htm IDEA: XBRL DOCUMENT v3.20.2
FINANCIAL HIGHLIGHTS (Details) - $ / shares
 3 Months Ended 9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Per Share Operating Performance:        
Net asset value, beginning of period $ 10.77 $ 19.13 $ 20.91 $ 15.18
Total income (loss) (0.04) (1.00) (10.12) 3.04
Total expenses (0.03) (0.04) (0.09) (0.13)
Net increase (decrease) in net asset value (0.07) (1.04) (10.21) 2.91
Net asset value, end of period $ 10.70 $ 18.09 $ 10.70 $ 18.09
Total Return (0.65%) (5.44%) (48.83%) 19.17%
Ratios to Average Net Assets        
Total income (loss) (0.08%) (5.42%) 20.96% 17.44%
Management fees 0.75% 0.75% 0.75% 0.75%
Total expenses excluding management fees 0.37% 0.31% 0.40% 0.22%
Expense waived (0.22%) (0.16%) (0.25%) (0.07%)
Net expense excluding management fees 0.15% 0.15% 0.15% 0.15%
Net income (loss) (0.31%) (5.64%) 20.28% 16.77%