Condensed Statements of Financial Condition - USD ($)	Dec. 31, 2019	Dec. 31, 2018
Assets
Cash and cash equivalents	$ 169,737,534	$ 438,410,816
Short-Term Investments	0	295,216
Equity in trading accounts:
Cash and cash equivalents	27,676,364	52,214,641
Unrealized gain (loss) on open commodity futures contracts	2,485,118	(15,391,459)
Receivable from Sponsor (Note 4)	67,629	51,299
Dividends receivable	26,873	11,339
Interest receivable	125	4,445
Prepaid insurance	20,451	41,440
ETF transaction fees receivable	350	0
Total assets	200,014,444	475,637,737
Liabilities and Capital
Payable due to Broker	429,967	0
Payable for shares redeemed	1,843,700	0
Management fees payable (Note 4)	147,346	373,759
Professional fees payable	636,133	654,096
Brokerage commissions payable	33,805	43,305
Directors' fees payable	11,634	19,174
Total liabilities	3,102,585	1,090,334
Commitments and Contingencies (Notes 4, 5 and 6)
Capital
Sponsor	1,000	0
Shareholders	196,910,859	474,547,403
Total Capital	196,911,859	474,547,403
Total liabilities and capital	$ 200,014,444	$ 475,637,737
Shares outstanding	5,550,000	13,050,000
United States Commodity Index Fund
Assets
Cash and cash equivalents	$ 163,036,680	$ 427,657,030
Equity in trading accounts:
Cash and cash equivalents	27,277,314	50,852,183
Unrealized gain (loss) on open commodity futures contracts	2,138,868	(14,487,984)
Dividends receivable	25,510	9,983
Interest receivable	0	4,224
Prepaid insurance	20,198	41,237
ETF transaction fees receivable	350	0
Total assets	192,498,920	464,076,673
Liabilities and Capital
Payable for shares redeemed	1,843,700	0
Management fees payable (Note 4)	142,699	367,646
Professional fees payable	571,822	604,296
Brokerage commissions payable	33,805	43,305
Directors' fees payable	11,412	18,918
Total liabilities	2,603,438	1,034,165
Commitments and Contingencies (Notes 4, 5 and 6)
Capital
Sponsor	0	0
Shareholders	189,895,482	463,042,508
Total Capital	189,895,482	463,042,508
Total liabilities and capital	$ 192,498,920	$ 464,076,673
Shares outstanding	5,150,000	12,350,000
Net asset value per share	$ 36.87	$ 37.49
Market value per share	$ 36.90	$ 37.53
United States Copper Index Fund
Assets
Cash and cash equivalents	$ 6,699,854	$ 10,753,786
Short-Term Investments	0	295,216
Equity in trading accounts:
Cash and cash equivalents	399,050	1,362,458
Unrealized gain (loss) on open commodity futures contracts	346,250	(903,475)
Receivable from Sponsor (Note 4)	67,629	51,299
Dividends receivable	1,363	1,356
Interest receivable	125	221
Prepaid insurance	253	203
Total assets	7,514,524	11,561,064
Liabilities and Capital
Payable due to Broker	429,967	0
Management fees payable (Note 4)	4,647	6,113
Professional fees payable	64,311	49,800
Directors' fees payable	222	256
Total liabilities	499,147	56,169
Commitments and Contingencies (Notes 4, 5 and 6)
Capital
Sponsor	0	0
Shareholders	7,015,377	11,504,895
Total Capital	7,015,377	11,504,895
Total liabilities and capital	$ 7,514,524	$ 11,561,064
Shares outstanding	400,000	700,000
Net asset value per share	$ 17.54	$ 16.44
Market value per share	$ 17.54	$ 16.44
USCF Crescent Crypto Index Fund
Assets
Cash and cash equivalents	$ 1,000
Equity in trading accounts:
Total assets	1,000
Liabilities and Capital
Commitments and Contingencies (Notes 4, 5 and 6)
Capital
Sponsor	1,000
Shareholders	0
Total Capital	1,000
Total liabilities and capital	1,000
United States Commodity Index Funds Trust
Assets
Cash and cash equivalents	169,737,534	$ 438,410,816
Short-Term Investments	0	295,216
Equity in trading accounts:
Cash and cash equivalents	$ 27,676,364	$ 52,214,641