United States Copper Index Fund (CPER) 10-K10 Mar 142013 FY Annual reportFinancial data

Company Profile

Document_And_Entity_Informatio

Document And Entity Information (USD $)	12 Months Ended
Document And Entity Information (USD $)	Dec. 31, 2013	Mar. 05, 2014	Jun. 30, 2013
Document Information [Line Items]	'	'	'
Document Type	'10-K	'	'
Amendment Flag	'false	'	'
Document Period End Date	31-Dec-13	'	'
Document Fiscal Year Focus	'2013	'	'
Document Fiscal Period Focus	'FY	'	'
Trading Symbol	'USCI	'	'
Entity Common Stock, Shares Outstanding	'	9,750,000	'
Entity Registrant Name	'United States Commodity Index Funds Trust	'	'
Entity Central Index Key	'0001479247	'	'
Current Fiscal Year End Date	'--12-31	'	'
Entity Well-known Seasoned Issuer	'No	'	'
Entity Voluntary Filers	'No	'	'
Entity Current Reporting Status	'Yes	'	'
Entity Filer Category	'Accelerated Filer	'	'
Entity Public Float	'	'	$504,146,453
United States Commodity Index Fund [Member]	'	'	'
Document Information [Line Items]	'	'	'
Entity Common Stock, Shares Outstanding	'	9,450,000	'
Entity Public Float	'	'	497,549,733
United States Copper Index Fund [Member]	'	'	'
Document Information [Line Items]	'	'	'
Entity Common Stock, Shares Outstanding	'	100,000	'
Entity Public Float	'	'	2,108,945
United States Agriculture Index Fund [Member]	'	'	'
Document Information [Line Items]	'	'	'
Entity Common Stock, Shares Outstanding	'	100,000	'
Entity Public Float	'	'	2,413,879
United States Metals Index Fund [Member]	'	'	'
Document Information [Line Items]	'	'	'
Entity Common Stock, Shares Outstanding	'	100,000	'
Entity Public Float	'	'	$2,073,896

Statements_of_Financial_Condit

Statements of Financial Condition (USD $)	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2013	Dec. 31, 2012
Statements of Financial Condition (USD $)	Dec. 31, 2013	Dec. 31, 2012	United States Commodity Index Fund [Member]	United States Commodity Index Fund [Member]	United States Copper Index Fund [Member]		United States Copper Index Fund [Member]		United States Agriculture Index Fund [Member]		United States Agriculture Index Fund [Member]		United States Metals Index Fund [Member]	United States Metals Index Fund [Member]
Assets	'	'	'	'	'		'		'		'		'	'
Cash and cash equivalents (Notes 2 and 6)	$480,181,509	$437,046,560	$474,123,523	$430,800,077	$2,040,735	[1]	$2,109,061	[1]	$2,098,545	[2]	$2,000,438	[2]	$1,918,706	$2,136,984
Equity in Newedge trading accounts:	'	'	'	'	'		'		'		'		'	'
Cash and cash equivalents	21,002,192	61,899,628	20,316,553	60,319,627	125,960		432,529		230,081		679,407		329,598	468,065
Unrealized gain (loss) on open commodity futures contracts	10,829,084	-5,287,422	10,789,747	-5,220,900	130,163		6,575		-44,533		-119,155		-46,293	46,058
Receivable for shares sold	8,491,911	2,922,886	8,491,911	2,922,886	'		'		'		'		'	'
Receivable from Sponsor (Note 4)	245,726	232,531	'	'	81,789		96,364		81,772		76,851		82,165	59,316
Interest receivable	1,343	531	1,261	474	25		18		46		32		11	7
Other assets	8,154	4,686	8,045	4,657	36		29		36		0		37	0
Total assets	520,759,919	496,819,400	513,731,040	488,826,821	2,378,708		2,644,576		2,365,947		2,637,573		2,284,224	2,710,430
Liabilities and Capital	'	'	'	'	'		'		'		'		'	'
Management fees payable (Note 4)	407,590	398,979	403,494	394,233	1,229		1,393		1,570		1,772		1,297	1,581
Professional fees payable	599,873	554,124	343,663	312,296	85,228		100,193		85,350		80,030		85,632	61,605
Brokerage commissions payable	22,815	22,815	22,815	22,815	'		'		'		'		'	'
Directors' fees payable	16,107	11,787	15,894	11,597	52		44		88		79		73	67
Other liabilities	152	153	152	153	'		'		'		'		'	'
Total liabilities	1,046,537	987,858	786,018	741,094	86,509		101,630		87,008		81,881		87,002	63,253
Commitments and Contingencies (Notes 4, 5 and 6)	'	'	'	'	'		'		'		'		'	'
Capital	'	'	'	'	'		'		'		'		'	'
Sponsor	0	0	0	0	0		0		0		0		0	0
Shareholders	519,713,382	495,831,542	512,945,022	488,085,727	2,292,199		2,542,946		2,278,939		2,555,692		2,197,222	2,647,177
Total Capital	519,713,382	495,831,542	512,945,022	488,085,727	2,292,199		2,542,946		2,278,939		2,555,692		2,197,222	2,647,177
Total liabilities and capital	$520,759,919	$496,819,400	$513,731,040	$488,826,821	$2,378,708		$2,644,576		$2,365,947		$2,637,573		$2,284,224	$2,710,430
Shares outstanding	9,450,000	8,650,000	9,150,000	8,350,000	100,000		100,000		100,000		100,000		100,000	100,000
Net asset value per share	'	'	$56.06	$58.45	$22.92		$25.43		$22.79		$25.56	[3]	$21.97	$26.47	[4]
Market value per share	'	'	$56.08	$58.63	$22.90		$25.01		$22.35		$25.59		$21.02	$31.07

[1]	The commencement of operations of the United States Copper Index Fund was November 15, 2011.
[2]	The commencement of operations of the United States Agriculture Index Fund was April 13, 2012.
[3]	The commencement of operations of USAG was April 13, 2012.
[4]	The commencement of operations of USMI was June 19, 2012.

Schedule_of_Investments

Schedule of Investments (USD $)	Dec. 31, 2013		Dec. 31, 2012
Schedule of Investments (USD $)	Dec. 31, 2013		contract
Number of Contracts	13,573	[1]	'
Unrealized Gain (Loss) on Open Commodity Contracts	10,789,747	[1]	'
United States Commodity Index Fund [Member]	'		'
Number of Contracts	'		13,041	[1]
Unrealized Gain (Loss) on Open Commodity Contracts	'		-5,220,900	[1]
% of Capital	2.10%	[1]	-1.07%	[1]
United States Commodity Index Fund [Member] \| Open Futures Contracts, Long [Member] \| US Treasury Securities [Member]	'		'
Number of Contracts	5,500		'
Unrealized Gain (Loss) on Open Commodity Contracts	4,571,285		'
% of Capital	0.89%		'
United States Commodity Index Fund [Member] \| Open Futures Contracts, Long [Member] \| US Treasury Securities [Member] \| CME Feeder Cattle Futures FC March 2014 contracts, expiring March 2014 [Member]	'		'
Number of Contracts	441		'
Unrealized Gain (Loss) on Open Commodity Contracts	-64,763		'
% of Capital	-0.01%		'
United States Commodity Index Fund [Member] \| Open Futures Contracts, Long [Member] \| US Treasury Securities [Member] \| COMEX Copper Futures HG March 2014 contracts, expiring March 2014 [Member]	'		'
Number of Contracts	434		'
Unrealized Gain (Loss) on Open Commodity Contracts	1,984,638		'
% of Capital	0.39%		'
United States Commodity Index Fund [Member] \| Open Futures Contracts, Long [Member] \| US Treasury Securities [Member] \| CME Live Cattle Futures LC February 2014 contracts, expiring February 2014 [Member]	'		'
Number of Contracts	687		'
Unrealized Gain (Loss) on Open Commodity Contracts	335,850		'
% of Capital	0.07%		'
United States Commodity Index Fund [Member] \| Open Futures Contracts, Long [Member] \| US Treasury Securities [Member] \| NYMEX Natural Gas Futures NG April 2014 contracts, expiring March 2014 [Member]	'		'
Number of Contracts	873		'
Unrealized Gain (Loss) on Open Commodity Contracts	-710,860		'
% of Capital	-0.14%		'
United States Commodity Index Fund [Member] \| Open Futures Contracts, Long [Member] \| US Treasury Securities [Member] \| NYMEX WTI Crude Oil Futures CL April 2014 contracts, expiring March 2014 [Member]	'		'
Number of Contracts	371		'
Unrealized Gain (Loss) on Open Commodity Contracts	2,175,700		'
% of Capital	0.42%		'
United States Commodity Index Fund [Member] \| Open Futures Contracts, Long [Member] \| US Treasury Securities [Member] \| NYMEX Heating Oil Futures HO June 2014 contracts, expiring May 2014 [Member]	'		'
Number of Contracts	289		'
Unrealized Gain (Loss) on Open Commodity Contracts	1,411,965		'
% of Capital	0.27%		'
United States Commodity Index Fund [Member] \| Open Futures Contracts, Long [Member] \| US Treasury Securities [Member] \| CBOT Soybean Futures S November 2014 contracts, expiring November 2014 [Member]	'		'
Number of Contracts	640		'
Unrealized Gain (Loss) on Open Commodity Contracts	-902,100		'
% of Capital	-0.18%		'
United States Commodity Index Fund [Member] \| Open Futures Contracts, Long [Member] \| US Treasury Securities [Member] \| NYMEX Platinum Futures PL April 2014 contracts, expiring April 2014 [Member]	'		'
Number of Contracts	540		'
Unrealized Gain (Loss) on Open Commodity Contracts	162,485		'
% of Capital	0.03%		'
United States Commodity Index Fund [Member] \| Open Futures Contracts, Long [Member] \| US Treasury Securities [Member] \| CBOT Soybean Meal Futures SM May 2014 contracts, expiring May 2014 [Member]	'		'
Number of Contracts	889		'
Unrealized Gain (Loss) on Open Commodity Contracts	-58,640		'
% of Capital	-0.01%		'
United States Commodity Index Fund [Member] \| Open Futures Contracts, Long [Member] \| US Treasury Securities [Member] \| NYMEX RBOB Gasoline Futures RB December 2014 contracts, expiring November [Member]	'		'
Number of Contracts	336		'
Unrealized Gain (Loss) on Open Commodity Contracts	237,010		'
% of Capital	0.05%		'
United States Commodity Index Fund [Member] \| Open Futures Contracts, Long [Member] \| Foreign [Member]	'		'
Number of Contracts	5,508		5,872
Unrealized Gain (Loss) on Open Commodity Contracts	12,047,859		-2,740,550
% of Capital	2.35%		-0.56%
United States Commodity Index Fund [Member] \| Open Futures Contracts, Long [Member] \| Foreign [Member] \| ICE-US Cotton #2 Futures CT July 2014 contracts, expiring July 2014 [Member]	'		'
Number of Contracts	892		'
Unrealized Gain (Loss) on Open Commodity Contracts	1,753,955		'
% of Capital	0.34%		'
United States Commodity Index Fund [Member] \| Open Futures Contracts, Long [Member] \| Foreign [Member] \| LME Tin Futures LT March 2014 contracts, expiring March 2014 [Member]	'		'
Number of Contracts	402		'
Unrealized Gain (Loss) on Open Commodity Contracts	4,337,905		'
% of Capital	0.85%		'
United States Commodity Index Fund [Member] \| Open Futures Contracts, Long [Member] \| Foreign [Member] \| LME Lead Futures LL April 2014 contracts, expiring April 2014 [Member]	'		'
Number of Contracts	711		'
Unrealized Gain (Loss) on Open Commodity Contracts	117,525		'
% of Capital	0.02%		'
United States Commodity Index Fund [Member] \| Open Futures Contracts, Long [Member] \| Foreign [Member] \| LME Zinc Futures LX April 2014 contracts, expiring April 2014 [Member]	'		'
Number of Contracts	790		'
Unrealized Gain (Loss) on Open Commodity Contracts	1,505,606		'
% of Capital	0.29%		'
United States Commodity Index Fund [Member] \| Open Futures Contracts, Long [Member] \| Foreign [Member] \| ICE-US Cocoa Futures CC May 2014 contracts, expiring May 2014 [Member]	'		'
Number of Contracts	1,323		'
Unrealized Gain (Loss) on Open Commodity Contracts	1,161,220		'
% of Capital	0.23%		'
United States Commodity Index Fund [Member] \| Open Futures Contracts, Long [Member] \| Foreign [Member] \| ICE Brent Crude Oil Futures CO June 2014 contracts, expiring May 2014 [Member]	'		'
Number of Contracts	334		'
Unrealized Gain (Loss) on Open Commodity Contracts	3,288,860		'
% of Capital	0.64%		'
United States Commodity Index Fund [Member] \| Open Futures Contracts, Long [Member] \| Foreign [Member] \| ICE-UK Gasoil Futures QS June 2014 contracts, expiring June 2014 [Member]	'		'
Number of Contracts	394		'
Unrealized Gain (Loss) on Open Commodity Contracts	-160,025		'
% of Capital	-0.03%		'
United States Commodity Index Fund [Member] \| Open Futures Contracts, Long [Member] \| Foreign [Member] \| LME Lead Futures LL June 2014 contracts, expiring June 2014 [Member]	'		'
Number of Contracts	662		'
Unrealized Gain (Loss) on Open Commodity Contracts	42,813		'
% of Capital	0.01%		'
United States Commodity Index Fund [Member] \| Open Futures Contracts, Long [Member] \| Foreign [Member] \| LME Aluminum Futures LA January 2013 contracts, expiring January 2013 [Member]	'		'
Number of Contracts	'		1,188
Unrealized Gain (Loss) on Open Commodity Contracts	'		-198,244
% of Capital	'		-0.04%
United States Commodity Index Fund [Member] \| Open Futures Contracts, Long [Member] \| Foreign [Member] \| ICE Brent Crude Oil Futures CO March 2013 contracts, expiring February 2013 [Member]	'		'
Number of Contracts	'		318
Unrealized Gain (Loss) on Open Commodity Contracts	'		18,170
% of Capital	'		0.00%
United States Commodity Index Fund [Member] \| Open Futures Contracts, Long [Member] \| Foreign [Member] \| ICE-US Cocoa Futures CC March 2013 contracts, expiring March 2013 [Member]	'		'
Number of Contracts	'		1,545
Unrealized Gain (Loss) on Open Commodity Contracts	'		-2,233,750
% of Capital	'		-0.46%
United States Commodity Index Fund [Member] \| Open Futures Contracts, Long [Member] \| Foreign [Member] \| LME Aluminum Futures LA March 2013 contracts, expiring March 2013 [Member]	'		'
Number of Contracts	'		506
Unrealized Gain (Loss) on Open Commodity Contracts	'		-4,449,450
% of Capital	'		-0.91%
United States Commodity Index Fund [Member] \| Open Futures Contracts, Long [Member] \| Foreign [Member] \| ICE-UK Gasoil Futures QS June 2013 contracts, expiring June 2013 [Member]	'		'
Number of Contracts	'		377
Unrealized Gain (Loss) on Open Commodity Contracts	'		-390,900
% of Capital	'		-0.08%
United States Commodity Index Fund [Member] \| Open Futures Contracts, Long [Member] \| Foreign [Member] \| LME Tin Futures LT August 2013 contracts, expiring August 2013 [Member]	'		'
Number of Contracts	'		300
Unrealized Gain (Loss) on Open Commodity Contracts	'		31,470
% of Capital	'		0.01%
United States Commodity Index Fund [Member] \| Open Futures Contracts, Long [Member] \| Foreign [Member] \| LME Zinc Futures LX August 2013 contracts, expiring August 2013 [Member]	'		'
Number of Contracts	'		667
Unrealized Gain (Loss) on Open Commodity Contracts	'		-87,644
% of Capital	'		-0.02%
United States Commodity Index Fund [Member] \| Open Futures Contracts, Long [Member] \| Foreign [Member] \| LME Lead Futures LL February 2013 contracts, expiring February 2013 [Member]	'		'
Number of Contracts	'		638
Unrealized Gain (Loss) on Open Commodity Contracts	'		1,602,863
% of Capital	'		0.33%
United States Commodity Index Fund [Member] \| Open Futures Contracts, Long [Member] \| United States Contracts [Member]	'		'
Number of Contracts	'		5,100
Unrealized Gain (Loss) on Open Commodity Contracts	'		-8,122,385
% of Capital	'		-1.67%
United States Commodity Index Fund [Member] \| Open Futures Contracts, Long [Member] \| United States Contracts [Member] \| CBOT Corn Futures C December 2013 contracts, expiring December 2013 [Member]	'		'
Number of Contracts	'		1,167
Unrealized Gain (Loss) on Open Commodity Contracts	'		-1,967,400
% of Capital	'		-0.40%
United States Commodity Index Fund [Member] \| Open Futures Contracts, Long [Member] \| United States Contracts [Member] \| CBOT Soybean Futures S November 2013 contracts, expiring November 2013 [Member]	'		'
Number of Contracts	'		538
Unrealized Gain (Loss) on Open Commodity Contracts	'		-713,900
% of Capital	'		-0.15%
United States Commodity Index Fund [Member] \| Open Futures Contracts, Long [Member] \| United States Contracts [Member] \| CBOT Soybean Meal Futures SM March 2013 contracts, expiring March 2013 [Member]	'		'
Number of Contracts	'		816
Unrealized Gain (Loss) on Open Commodity Contracts	'		-2,982,000
% of Capital	'		-0.61%
United States Commodity Index Fund [Member] \| Open Futures Contracts, Long [Member] \| United States Contracts [Member] \| CME Live Cattle Futures LC April 2013 contracts, expiring April 2013 [Member]	'		'
Number of Contracts	'		637
Unrealized Gain (Loss) on Open Commodity Contracts	'		239,880
% of Capital	'		0.05%
United States Commodity Index Fund [Member] \| Open Futures Contracts, Long [Member] \| United States Contracts [Member] \| NYMEX Heating Oil Futures HO April 2013 contracts, expiring March 2013 [Member]	'		'
Number of Contracts	'		278
Unrealized Gain (Loss) on Open Commodity Contracts	'		32,936
% of Capital	'		0.01%
United States Commodity Index Fund [Member] \| Open Futures Contracts, Long [Member] \| United States Contracts [Member] \| NYMEX Platinum Futures PL April 2013 contracts, expiring April 2013 [Member]	'		'
Number of Contracts	'		454
Unrealized Gain (Loss) on Open Commodity Contracts	'		171,375
% of Capital	'		0.03%
United States Commodity Index Fund [Member] \| Open Futures Contracts, Long [Member] \| United States Contracts [Member] \| CBOT Wheat Futures W July 2013 contracts, expiring July 2013 [Member]	'		'
Number of Contracts	'		884
Unrealized Gain (Loss) on Open Commodity Contracts	'		-2,896,875
% of Capital	'		-0.60%
United States Commodity Index Fund [Member] \| Open Futures Contracts, Long [Member] \| United States Contracts [Member] \| NYMEX RBOB Gasoline Futures XB December 2013 contracts, expiring November 2013 [Member]	'		'
Number of Contracts	'		326
Unrealized Gain (Loss) on Open Commodity Contracts	'		-6,401
% of Capital	'		0.00%
United States Commodity Index Fund [Member] \| Open Futures Contracts, Short [Member] \| Foreign [Member]	'		'
Number of Contracts	2,565	[2]	2,069	[2]
Unrealized Gain (Loss) on Open Commodity Contracts	-5,829,397	[2]	5,642,035	[2]
% of Capital	-1.14%	[2]	1.16%	[2]
United States Commodity Index Fund [Member] \| Open Futures Contracts, Short [Member] \| Foreign [Member] \| LME Tin Futures LT March 2014 contracts, expiring March 2014 [Member]	'		'
Number of Contracts	402	[2]	'
Unrealized Gain (Loss) on Open Commodity Contracts	645,975	[2]	'
% of Capital	0.13%	[2]	'
United States Commodity Index Fund [Member] \| Open Futures Contracts, Short [Member] \| Foreign [Member] \| LME Lead Futures LL April 2014 contracts, expiring April 2014 [Member]	'		'
Number of Contracts	711	[2]	'
Unrealized Gain (Loss) on Open Commodity Contracts	-1,932,074	[2]	'
% of Capital	-0.38%	[2]	'
United States Commodity Index Fund [Member] \| Open Futures Contracts, Short [Member] \| Foreign [Member] \| LME Zinc Futures LX April 2014 contracts, expiring April 2014 [Member]	'		'
Number of Contracts	790	[2]	'
Unrealized Gain (Loss) on Open Commodity Contracts	-2,435,467	[2]	'
% of Capital	-0.48%	[2]	'
United States Commodity Index Fund [Member] \| Open Futures Contracts, Short [Member] \| Foreign [Member] \| LME Lead Futures LL June 2014 contracts, expiring June 2014 [Member]	'		'
Number of Contracts	662	[2]	'
Unrealized Gain (Loss) on Open Commodity Contracts	-2,107,831	[2]	'
% of Capital	-0.41%	[2]	'
United States Commodity Index Fund [Member] \| Open Futures Contracts, Short [Member] \| Foreign [Member] \| LME Aluminum Futures LA January 2013 contracts, expiring January 2013 [Member]	'		'
Number of Contracts	'		1,188	[2]
Unrealized Gain (Loss) on Open Commodity Contracts	'		3,591,081	[2]
% of Capital	'		0.74%	[2]
United States Commodity Index Fund [Member] \| Open Futures Contracts, Short [Member] \| Foreign [Member] \| LME Aluminum Futures LA March 2013 contracts, expiring March 2013 [Member]	'		'
Number of Contracts	'		506	[2]
Unrealized Gain (Loss) on Open Commodity Contracts	'		2,087,289	[2]
% of Capital	'		0.43%	[2]
United States Commodity Index Fund [Member] \| Open Futures Contracts, Short [Member] \| Foreign [Member] \| LME Tin Futures LT August 2013 contracts, expiring August 2013 [Member]	'		'
Number of Contracts	'		1	[2]
Unrealized Gain (Loss) on Open Commodity Contracts	'		-427	[2]
% of Capital	'		0.00%	[2]
United States Commodity Index Fund [Member] \| Open Futures Contracts, Short [Member] \| Foreign [Member] \| LME Zinc Futures LX August 2013 contracts, expiring August 2013 [Member]	'		'
Number of Contracts	'		5	[2]
Unrealized Gain (Loss) on Open Commodity Contracts	'		-2,487	[2]
% of Capital	'		0.00%	[2]
United States Commodity Index Fund [Member] \| Open Futures Contracts, Short [Member] \| Foreign [Member] \| LME Lead Futures LL February 2013 contracts, expiring February 2013 [Member]	'		'
Number of Contracts	'		36	[2]
Unrealized Gain (Loss) on Open Commodity Contracts	'		3,227	[2]
% of Capital	'		0.00%	[2]
United States Commodity Index Fund [Member] \| Open Futures Contracts, Short [Member] \| Foreign [Member] \| LME Tin Futures LT January 2013 contracts, expiring January 2013 [Member]	'		'
Number of Contracts	'		333	[2]
Unrealized Gain (Loss) on Open Commodity Contracts	'		-36,648	[2]
% of Capital	'		-0.01%	[2]
United States Commodity Index Fund [Member] \| Cash Equivalents [Member] \| US Treasury Securities [Member]	'		'
Market Value	325,142,075		435,149,105
% of Capital	63.39%		89.15%
United States Commodity Index Fund [Member] \| Cash Equivalents [Member] \| US Treasury Securities [Member] \| U.S.Treasury Bills 0.04%, 3/06/2014 [Member]	'		'
Principal Amount	30,200,000		'
Market Value	30,197,808		'
% of Capital	5.89%		'
United States Commodity Index Fund [Member] \| Cash Equivalents [Member] \| US Treasury Securities [Member] \| U.S.Treasury Bills 0.05%, 3/27/2014 [Member]	'		'
Principal Amount	30,000,000		'
Market Value	29,996,813		'
% of Capital	5.85%		'
United States Commodity Index Fund [Member] \| Cash Equivalents [Member] \| US Treasury Securities [Member] \| U.S.Treasury Bills 0.05%, 1/09/2014 [Member]	'		'
Principal Amount	55,000,000		'
Market Value	54,999,318		'
% of Capital	10.72%		'
United States Commodity Index Fund [Member] \| Cash Equivalents [Member] \| US Treasury Securities [Member] \| U.S. Treasury Bills 0.06%, 1/09/2014 [Member]	'		'
Principal Amount	20,000,000		'
Market Value	19,999,752		'
% of Capital	3.90%		'
United States Commodity Index Fund [Member] \| Cash Equivalents [Member] \| US Treasury Securities [Member] \| U.S.Treasury Bills 0.04%, 1/30/2014 [Member]	'		'
Principal Amount	20,000,000		'
Market Value	19,999,285		'
% of Capital	3.90%		'
United States Commodity Index Fund [Member] \| Cash Equivalents [Member] \| US Treasury Securities [Member] \| U.S.Treasury Bills 0.09%, 1/03/2013 [Member]	'		'
Principal Amount	'		40,000,000
Market Value	'		39,999,800
% of Capital	'		8.19%
United States Commodity Index Fund [Member] \| Cash Equivalents [Member] \| US Treasury Securities [Member] \| U.S.Treasury Bills 0.09%, 1/10/2013 [Member]	'		'
Principal Amount	'		10,000,000
Market Value	'		9,999,781
% of Capital	'		2.05%
United States Commodity Index Fund [Member] \| Cash Equivalents [Member] \| US Treasury Securities [Member] \| U.S.Treasury Bills 0.09%, 1/17/2013 [Member]	'		'
Principal Amount	'		10,000,000
Market Value	'		9,999,573
% of Capital	'		2.05%
United States Commodity Index Fund [Member] \| Cash Equivalents [Member] \| US Treasury Securities [Member] \| U.S.Treasury Bills 0.10%, 1/17/2013 [Member]	'		'
Principal Amount	'		10,000,000
Market Value	'		9,999,573
% of Capital	'		2.05%
United States Commodity Index Fund [Member] \| Cash Equivalents [Member] \| US Treasury Securities [Member] \| U.S.Treasury Bills 0.09%, 1/24/2013 [Member]	'		'
Principal Amount	'		45,000,000
Market Value	'		44,997,423
% of Capital	'		9.22%
United States Commodity Index Fund [Member] \| Cash Equivalents [Member] \| US Treasury Securities [Member] \| U.S.Treasury Bills 0.09%, 2/07/2013 [Member]	'		'
Principal Amount	'		40,000,000
Market Value	'		39,996,402
% of Capital	'		8.19%
United States Commodity Index Fund [Member] \| Cash Equivalents [Member] \| US Treasury Securities [Member] \| U.S.Treasury Bills 0.06%, 2/28/2013 [Member]	'		'
Principal Amount	'		20,200,000
Market Value	'		20,197,966
% of Capital	'		4.14%
United States Commodity Index Fund [Member] \| Cash Equivalents [Member] \| US Treasury Securities [Member] \| U.S.Treasury Bills 0.07%, 3/07/2013 [Member]	'		'
Principal Amount	'		20,000,000
Market Value	'		19,996,967
% of Capital	'		4.10%
United States Commodity Index Fund [Member] \| Cash Equivalents [Member] \| US Treasury Securities [Member] \| U.S.Treasury Bills 0.09%, 3/07/2013 [Member]	'		'
Principal Amount	'		50,000,000
Market Value	'		49,992,418
% of Capital	'		10.24%
United States Commodity Index Fund [Member] \| Cash Equivalents [Member] \| US Treasury Securities [Member] \| U.S.Treasury Bills 0.05%, 3/14/2013 [Member]	'		'
Principal Amount	'		20,000,000
Market Value	'		19,998,180
% of Capital	'		4.10%
United States Commodity Index Fund [Member] \| Cash Equivalents [Member] \| US Treasury Securities [Member] \| U.S.Treasury Bills 0.10%, 3/28/2013 [Member]	'		'
Principal Amount	'		50,000,000
Market Value	'		49,988,223
% of Capital	'		10.24%
United States Commodity Index Fund [Member] \| Cash Equivalents [Member] \| US Treasury Securities [Member] \| U.S.Treasury Bills 0.04%, 4/18/2013 [Member]	'		'
Principal Amount	'		90,000,000
Market Value	'		89,988,765
% of Capital	'		18.44%
United States Commodity Index Fund [Member] \| Cash Equivalents [Member] \| US Treasury Securities [Member] \| U.S.Treasury Bills 0.06%, 5/02/2013 [Member]	'		'
Principal Amount	20,000,000		30,000,000
Market Value	19,996,614		29,994,034
% of Capital	3.90%		6.14%
United States Commodity Index Fund [Member] \| Cash Equivalents [Member] \| US Treasury Securities [Member] \| U.S.Treasury Bills 0.07%, 4/24/2014 [Member]	'		'
Principal Amount	20,000,000		'
Market Value	19,995,606		'
% of Capital	3.90%		'
United States Commodity Index Fund [Member] \| Cash Equivalents [Member] \| US Treasury Securities [Member] \| U.S.Treasury Bills 0.08%, 5/01/2014 [Member]	'		'
Principal Amount	20,000,000		'
Market Value	19,995,000		'
% of Capital	3.90%		'
United States Commodity Index Fund [Member] \| Cash Equivalents [Member] \| US Treasury Securities [Member] \| U.S.Treasury Bills 0.08%, 5/08/2014 [Member]	'		'
Principal Amount	30,000,000		'
Market Value	29,991,533		'
% of Capital	5.85%		'
United States Commodity Index Fund [Member] \| Cash Equivalents [Member] \| US Treasury Securities [Member] \| U.S.Treasury Bills 0.09%, 5/15/2014 [Member]	'		'
Principal Amount	30,000,000		'
Market Value	29,989,950		'
% of Capital	5.84%		'
United States Commodity Index Fund [Member] \| Cash Equivalents [Member] \| US Treasury Securities [Member] \| U.S.Treasury Bills 0.10%, 6/05/2014 [Member]	'		'
Principal Amount	30,000,000		'
Market Value	29,987,729		'
% of Capital	5.84%		'
United States Commodity Index Fund [Member] \| Cash Equivalents [Member] \| US Treasury Securities [Member] \| U.S.Treasury Bills 0.08%, 6/26/2014 [Member]	'		'
Principal Amount	20,000,000		'
Market Value	19,992,667		'
% of Capital	3.90%		'
United States Copper Index Fund [Member] \| Open Futures Contracts, Long [Member] \| United States Contracts [Member]	'		'
Number of Contracts	'		28	[3]
Unrealized Gain (Loss) on Open Commodity Contracts	'		6,575	[3]
% of Capital	'		0.26%	[3]
United States Copper Index Fund [Member] \| Open Futures Contracts, Long [Member] \| United States Contracts [Member] \| COMEX Copper Futures HG December 2013 contracts, expiring December 2013 [Member]	'		'
Number of Contracts	'		14
Unrealized Gain (Loss) on Open Commodity Contracts	'		-1,675
% of Capital	'		-0.07%
United States Copper Index Fund [Member] \| Open Futures Contracts, Long [Member] \| United States Contracts [Member] \| COMEX Copper Futures HG March 2014 contracts, expiring March 2014 [Member]	'		'
Number of Contracts	27		'
Unrealized Gain (Loss) on Open Commodity Contracts	130,163		'
% of Capital	5.68%		'
United States Copper Index Fund [Member] \| Open Futures Contracts, Long [Member] \| United States Contracts [Member] \| COMEX Copper Futures HG March 2013 contracts, expiring March 2013 [Member]	'		'
Number of Contracts	'		7
Unrealized Gain (Loss) on Open Commodity Contracts	'		8,575
% of Capital	'		0.34%
United States Copper Index Fund [Member] \| Open Futures Contracts, Long [Member] \| United States Contracts [Member] \| COMEX Copper Futures HG May 2013 contracts, expiring May 2013 [Member]	'		'
Number of Contracts	'		7
Unrealized Gain (Loss) on Open Commodity Contracts	'		-325
% of Capital	'		-0.01%
United States Copper Index Fund [Member] \| Cash Equivalents [Member] \| US Treasury Securities [Member]	'		'
Market Value	1,599,705		2,149,689
% of Capital	69.79%		84.54%
United States Copper Index Fund [Member] \| Cash Equivalents [Member] \| US Treasury Securities [Member] \| U.S.Treasury Bills 0.06%, 1/09/2014 [Member]	'		'
Principal Amount	100,000		'
Market Value	99,999		'
% of Capital	4.36%		'
United States Copper Index Fund [Member] \| Cash Equivalents [Member] \| US Treasury Securities [Member] \| U.S.Treasury Bills 0.05%, 3/06/2014 [Member]	'		'
Principal Amount	400,000		'
Market Value	399,968		'
% of Capital	17.45%		'
United States Copper Index Fund [Member] \| Cash Equivalents [Member] \| US Treasury Securities [Member] \| U.S.Treasury Bills 0.05%, 3/27/2014 [Member]	'		'
Principal Amount	100,000		'
Market Value	99,989		'
% of Capital	4.36%		'
United States Copper Index Fund [Member] \| Cash Equivalents [Member] \| US Treasury Securities [Member] \| U.S.Treasury Bills 0.09%, 1/03/2013 [Member]	'		'
Principal Amount	'		150,000
Market Value	'		149,999
% of Capital	'		5.90%
United States Copper Index Fund [Member] \| Cash Equivalents [Member] \| US Treasury Securities [Member] \| U.S.Treasury Bills 0.09%, 2/07/2013 [Member]	'		'
Principal Amount	'		100,000
Market Value	'		99,991
% of Capital	'		3.93%
United States Copper Index Fund [Member] \| Cash Equivalents [Member] \| US Treasury Securities [Member] \| U.S.Treasury Bills 0.06%, 2/28/2013 [Member]	'		'
Principal Amount	'		100,000
Market Value	'		99,990
% of Capital	'		3.93%
United States Copper Index Fund [Member] \| Cash Equivalents [Member] \| US Treasury Securities [Member] \| U.S.Treasury Bills 0.10%, 3/28/2013 [Member]	'		'
Principal Amount	'		500,000
Market Value	'		499,882
% of Capital	'		19.66%
United States Copper Index Fund [Member] \| Cash Equivalents [Member] \| US Treasury Securities [Member] \| U.S.Treasury Bills 0.04%, 4/18/2013 [Member]	'		'
Principal Amount	'		300,000
Market Value	'		299,962
% of Capital	'		11.80%
United States Copper Index Fund [Member] \| Cash Equivalents [Member] \| US Treasury Securities [Member] \| U.S.Treasury Bills 0.06%, 4/17/2014 [Member]	'		'
Principal Amount	200,000		'
Market Value	199,966		'
% of Capital	8.73%		'
United States Copper Index Fund [Member] \| Cash Equivalents [Member] \| US Treasury Securities [Member] \| U.S.Treasury Bills 0.06%, 5/02/2013 [Member]	'		'
Principal Amount	'		200,000
Market Value	'		199,960
% of Capital	'		7.86%
United States Copper Index Fund [Member] \| Cash Equivalents [Member] \| US Treasury Securities [Member] \| U.S.Treasury Bills 0.07%, 4/24/2014 [Member]	'		'
Principal Amount	200,000		200,000
Market Value	199,956		199,984
% of Capital	8.73%		7.87%
United States Copper Index Fund [Member] \| Cash Equivalents [Member] \| US Treasury Securities [Member] \| U.S.Treasury Bills 0.08%, 5/01/2014 [Member]	'		'
Principal Amount	200,000		'
Market Value	199,950		'
% of Capital	8.72%		'
United States Copper Index Fund [Member] \| Cash Equivalents [Member] \| US Treasury Securities [Member] \| U.S.Treasury Bills 0.08%, 5/08/2014 [Member]	'		'
Principal Amount	200,000		'
Market Value	199,944		'
% of Capital	8.72%		'
United States Copper Index Fund [Member] \| Cash Equivalents [Member] \| US Treasury Securities [Member] \| U.S.Treasury Bills 0.09%, 5/15/2014 [Member]	'		'
Principal Amount	200,000		'
Market Value	199,933		'
% of Capital	8.72%		'
United States Copper Index Fund [Member] \| Cash Equivalents [Member] \| US Treasury Securities [Member] \| U.S.Treasury Bills 0.08%, 1/03/2013 [Member]	'		'
Principal Amount	'		100,000
Market Value	'		100,000
% of Capital	'		3.93%
United States Copper Index Fund [Member] \| Cash Equivalents [Member] \| US Treasury Securities [Member] \| U.S.Treasury Bills 0.09%, 3/07/2012 [Member]	'		'
Principal Amount	'		500,000
Market Value	'		499,921
% of Capital	'		19.66%
United States Agriculture Index Fund [Member]	'		'
Number of Contracts	68	[4]	72	[5]
Unrealized Gain (Loss) on Open Commodity Contracts	-44,533	[4]	-119,155	[5]
% of Capital	-1.95%	[4]	-4.66%	[5]
United States Agriculture Index Fund [Member] \| Open Futures Contracts, Long [Member] \| Foreign [Member]	'		'
Number of Contracts	29		29
Unrealized Gain (Loss) on Open Commodity Contracts	2,216		-31,470
% of Capital	0.10%		-1.23%
United States Agriculture Index Fund [Member] \| Open Futures Contracts, Long [Member] \| Foreign [Member] \| ICE-US Cotton #2 Futures CT July 2014 contracts, expiring July 2014 [Member]	'		'
Number of Contracts	5		'
Unrealized Gain (Loss) on Open Commodity Contracts	9,520		'
% of Capital	0.42%		'
United States Agriculture Index Fund [Member] \| Open Futures Contracts, Long [Member] \| Foreign [Member] \| ICE-Canola Futures RS March 2014 contracts, expiring March 2014 [Member]	'		'
Number of Contracts	3		'
Unrealized Gain (Loss) on Open Commodity Contracts	-1,951		'
% of Capital	-0.09%		'
United States Agriculture Index Fund [Member] \| Open Futures Contracts, Long [Member] \| Foreign [Member] \| ICE-US Sugar #11 Futures SB May 2014 contracts, expiring April 2014 [Member]	'		'
Number of Contracts	10		'
Unrealized Gain (Loss) on Open Commodity Contracts	-9,408		'
% of Capital	-0.41%		'
United States Agriculture Index Fund [Member] \| Open Futures Contracts, Long [Member] \| Foreign [Member] \| ICE-US Cocoa Futures CC March 2013 contracts, expiring March 2013 [Member]	'		'
Number of Contracts	'		4
Unrealized Gain (Loss) on Open Commodity Contracts	'		-9,740
% of Capital	'		-0.38%
United States Agriculture Index Fund [Member] \| Open Futures Contracts, Long [Member] \| Foreign [Member] \| ICE-US Coffee-C Futures KC July 2014 contracts, expiring July 2014 [Member]	'		'
Number of Contracts	4		'
Unrealized Gain (Loss) on Open Commodity Contracts	675		'
% of Capital	0.03%		'
United States Agriculture Index Fund [Member] \| Open Futures Contracts, Long [Member] \| Foreign [Member] \| ICE-US Cocoa Futures CC July 2014 contracts, expiring July 2014 [Member]	'		'
Number of Contracts	7		'
Unrealized Gain (Loss) on Open Commodity Contracts	3,380		'
% of Capital	0.15%		'
United States Agriculture Index Fund [Member] \| Open Futures Contracts, Long [Member] \| Foreign [Member] \| ICE-Canola Futures RS March 2013 contracts, expiring March 2013 [Member]	'		'
Number of Contracts	'		10
Unrealized Gain (Loss) on Open Commodity Contracts	'		-4,137
% of Capital	'		-0.16%
United States Agriculture Index Fund [Member] \| Open Futures Contracts, Long [Member] \| Foreign [Member] \| ICE-US Cotton Futures CT March 2013 contracts, expiring March 2013 [Member]	'		'
Number of Contracts	'		2
Unrealized Gain (Loss) on Open Commodity Contracts	'		1,035
% of Capital	'		0.04%
United States Agriculture Index Fund [Member] \| Open Futures Contracts, Long [Member] \| Foreign [Member] \| ICE-US Sugar #11 Futures SB May 2013 contracts, expiring April 2013 [Member]	'		'
Number of Contracts	'		9
Unrealized Gain (Loss) on Open Commodity Contracts	'		-515
% of Capital	'		-0.02%
United States Agriculture Index Fund [Member] \| Open Futures Contracts, Long [Member] \| Foreign [Member] \| ICE-US Coffee-C Futures KC July 2013 contracts, expiring July 2013 [Member]	'		'
Number of Contracts	'		4
Unrealized Gain (Loss) on Open Commodity Contracts	'		-18,113
% of Capital	'		-0.71%
United States Agriculture Index Fund [Member] \| Open Futures Contracts, Long [Member] \| United States Contracts [Member]	'		'
Number of Contracts	39		43
Unrealized Gain (Loss) on Open Commodity Contracts	-46,749		-87,685
% of Capital	-2.05%		-3.43%
United States Agriculture Index Fund [Member] \| Open Futures Contracts, Long [Member] \| United States Contracts [Member] \| CME Feeder Cattle Futures FC March 2014 contracts, expiring March 2014 [Member]	'		'
Number of Contracts	1		'
Unrealized Gain (Loss) on Open Commodity Contracts	-525		'
% of Capital	-0.02%		'
United States Agriculture Index Fund [Member] \| Open Futures Contracts, Long [Member] \| United States Contracts [Member] \| CME Live Cattle Futures LC February 2014 contracts, expiring February 2014 [Member]	'		'
Number of Contracts	5		'
Unrealized Gain (Loss) on Open Commodity Contracts	1,970		'
% of Capital	0.09%		'
United States Agriculture Index Fund [Member] \| Open Futures Contracts, Long [Member] \| United States Contracts [Member] \| CBOT Corn Futures C December 2013 contracts, expiring December 2013 [Member]	'		'
Number of Contracts	'		11
Unrealized Gain (Loss) on Open Commodity Contracts	'		-20,475
% of Capital	'		-0.80%
United States Agriculture Index Fund [Member] \| Open Futures Contracts, Long [Member] \| United States Contracts [Member] \| CBOT Soybean Oil Futures BO March 2014 contracts, expiring March 2014 [Member]	'		'
Number of Contracts	1		'
Unrealized Gain (Loss) on Open Commodity Contracts	-84		'
% of Capital	0.00%		'
United States Agriculture Index Fund [Member] \| Open Futures Contracts, Long [Member] \| United States Contracts [Member] \| CBOT Wheat Futures W March 2014 contracts, expiring March 2014 [Member]	'		'
Number of Contracts	5		'
Unrealized Gain (Loss) on Open Commodity Contracts	-14,513		'
% of Capital	-0.64%		'
United States Agriculture Index Fund [Member] \| Open Futures Contracts, Long [Member] \| United States Contracts [Member] \| CBOT Soybean Futures S November 2014 contracts, expiring November 2014 [Member]	'		'
Number of Contracts	6		'
Unrealized Gain (Loss) on Open Commodity Contracts	-11,325		'
% of Capital	-0.50%		'
United States Agriculture Index Fund [Member] \| Open Futures Contracts, Long [Member] \| United States Contracts [Member] \| CBOT Soybean Futures S November 2013 contracts, expiring November 2013 [Member]	'		'
Number of Contracts	'		6
Unrealized Gain (Loss) on Open Commodity Contracts	'		-3,250
% of Capital	'		-0.13%
United States Agriculture Index Fund [Member] \| Open Futures Contracts, Long [Member] \| United States Contracts [Member] \| CBOT Soybean Meal Futures SM May 2014 contracts, expiring May 2014 [Member]	'		'
Number of Contracts	4		'
Unrealized Gain (Loss) on Open Commodity Contracts	970		'
% of Capital	0.04%		'
United States Agriculture Index Fund [Member] \| Open Futures Contracts, Long [Member] \| United States Contracts [Member] \| CBOT Soybean Meal Futures SM March 2013 contracts, expiring March 2013 [Member]	'		'
Number of Contracts	'		5
Unrealized Gain (Loss) on Open Commodity Contracts	'		-15,730
% of Capital	'		-0.61%
United States Agriculture Index Fund [Member] \| Open Futures Contracts, Long [Member] \| United States Contracts [Member] \| CME Live Cattle Futures LC April 2013 contracts, expiring April 2013 [Member]	'		'
Number of Contracts	'		5
Unrealized Gain (Loss) on Open Commodity Contracts	'		1,360
% of Capital	'		0.05%
United States Agriculture Index Fund [Member] \| Open Futures Contracts, Long [Member] \| United States Contracts [Member] \| KCBOT Hard Red Winter Wheat Futures KW May 2014 contracts, expiring May 2014 [Member]	'		'
Number of Contracts	1		'
Unrealized Gain (Loss) on Open Commodity Contracts	-4,900		'
% of Capital	-0.22%		'
United States Agriculture Index Fund [Member] \| Open Futures Contracts, Long [Member] \| United States Contracts [Member] \| CBOT Corn Futures C December 2014 contracts, expiring December 2014 [Member]	'		'
Number of Contracts	11		'
Unrealized Gain (Loss) on Open Commodity Contracts	-12,362		'
% of Capital	-0.54%		'
United States Agriculture Index Fund [Member] \| Open Futures Contracts, Long [Member] \| United States Contracts [Member] \| CME Lean Hogs Futures LH April 2014 contracts, expiring April 2014 [Member]	'		'
Number of Contracts	5		'
Unrealized Gain (Loss) on Open Commodity Contracts	-5,980		'
% of Capital	-0.26%		'
United States Agriculture Index Fund [Member] \| Open Futures Contracts, Long [Member] \| United States Contracts [Member] \| CBOT Wheat Futures W March 2013 contracts, expiring March 2013 [Member]	'		'
Number of Contracts	'		7
Unrealized Gain (Loss) on Open Commodity Contracts	'		-32,525
% of Capital	'		-1.27%
United States Agriculture Index Fund [Member] \| Open Futures Contracts, Long [Member] \| United States Contracts [Member] \| CME Feeder Cattle Futures FC March 2013 contracts, expiring March 2013 [Member]	'		'
Number of Contracts	'		1
Unrealized Gain (Loss) on Open Commodity Contracts	'		-412
% of Capital	'		-0.02%
United States Agriculture Index Fund [Member] \| Open Futures Contracts, Long [Member] \| United States Contracts [Member] \| CME Lean Hogs Futures LH April 2013 contracts, expiring April 2013 [Member]	'		'
Number of Contracts	'		3
Unrealized Gain (Loss) on Open Commodity Contracts	'		-2,970
% of Capital	'		-0.12%
United States Agriculture Index Fund [Member] \| Open Futures Contracts, Long [Member] \| United States Contracts [Member] \| KCBT Hard Red Winter Wheat Futures KW May 2013 contracts, expiring May 2013 [Member]	'		'
Number of Contracts	'		4
Unrealized Gain (Loss) on Open Commodity Contracts	'		-13,275
% of Capital	'		-0.52%
United States Agriculture Index Fund [Member] \| Open Futures Contracts, Long [Member] \| United States Contracts [Member] \| CBOT Soybean Oil Futures BO July 2013 contracts, expiring July 2013 [Member]	'		'
Number of Contracts	'		1
Unrealized Gain (Loss) on Open Commodity Contracts	'		-408
% of Capital	'		-0.01%
United States Agriculture Index Fund [Member] \| Cash Equivalents [Member] \| US Treasury Securities [Member]	'		'
Market Value	1,499,678		2,199,688
% of Capital	65.81%		86.07%
United States Agriculture Index Fund [Member] \| Cash Equivalents [Member] \| US Treasury Securities [Member] \| U.S.Treasury Bills 0.05%, 3/06/2014 [Member]	'		'
Principal Amount	200,000		'
Market Value	199,984		'
% of Capital	8.78%		'
United States Agriculture Index Fund [Member] \| Cash Equivalents [Member] \| US Treasury Securities [Member] \| U.S.Treasury Bills 0.05%, 3/27/2014 [Member]	'		'
Principal Amount	200,000		'
Market Value	199,979		'
% of Capital	8.78%		'
United States Agriculture Index Fund [Member] \| Cash Equivalents [Member] \| US Treasury Securities [Member] \| U.S.Treasury Bills 0.09%, 1/03/2013 [Member]	'		'
Principal Amount	'		150,000
Market Value	'		149,999
% of Capital	'		5.87%
United States Agriculture Index Fund [Member] \| Cash Equivalents [Member] \| US Treasury Securities [Member] \| U.S.Treasury Bills 0.09%, 1/17/2013 [Member]	'		'
Principal Amount	'		200,000
Market Value	'		199,992
% of Capital	'		7.83%
United States Agriculture Index Fund [Member] \| Cash Equivalents [Member] \| US Treasury Securities [Member] \| U.S.Treasury Bills 0.10%, 3/28/2013 [Member]	'		'
Principal Amount	'		500,000
Market Value	'		499,882
% of Capital	'		19.56%
United States Agriculture Index Fund [Member] \| Cash Equivalents [Member] \| US Treasury Securities [Member] \| U.S.Treasury Bills 0.04%, 4/18/2013 [Member]	'		'
Principal Amount	'		400,000
Market Value	'		399,950
% of Capital	'		15.65%
United States Agriculture Index Fund [Member] \| Cash Equivalents [Member] \| US Treasury Securities [Member] \| U.S.Treasury Bills 0.06%, 4/17/2014 [Member]	'		'
Principal Amount	200,000		'
Market Value	199,966		'
% of Capital	8.78%		'
United States Agriculture Index Fund [Member] \| Cash Equivalents [Member] \| US Treasury Securities [Member] \| U.S.Treasury Bills 0.07%, 4/24/2014 [Member]	'		'
Principal Amount	200,000		200,000
Market Value	199,956		199,984
% of Capital	8.77%		7.82%
United States Agriculture Index Fund [Member] \| Cash Equivalents [Member] \| US Treasury Securities [Member] \| U.S.Treasury Bills 0.08%, 5/01/2014 [Member]	'		'
Principal Amount	200,000		'
Market Value	199,950		'
% of Capital	8.77%		'
United States Agriculture Index Fund [Member] \| Cash Equivalents [Member] \| US Treasury Securities [Member] \| U.S.Treasury Bills 0.08%, 5/08/2014 [Member]	'		'
Principal Amount	200,000		'
Market Value	199,944		'
% of Capital	8.77%		'
United States Agriculture Index Fund [Member] \| Cash Equivalents [Member] \| US Treasury Securities [Member] \| U.S.Treasury Bills 0.09%, 5/15/2014 [Member]	'		'
Principal Amount	300,000		'
Market Value	299,899		'
% of Capital	13.16%		'
United States Agriculture Index Fund [Member] \| Cash Equivalents [Member] \| US Treasury Securities [Member] \| U.S.Treasury Bills 0.09%, 3/07/2012 [Member]	'		'
Principal Amount	'		750,000
Market Value	'		749,881
% of Capital	'		29.34%
United States Metals Index Fund [Member]	'		'
Number of Contracts	105	[6]	84	[7]
Unrealized Gain (Loss) on Open Commodity Contracts	-46,293	[6]	46,058	[7]
% of Capital	-2.11%	[6]	1.74%	[7]
United States Metals Index Fund [Member] \| Open Futures Contracts, Long [Member] \| Foreign [Member]	'		'
Number of Contracts	52		43
Unrealized Gain (Loss) on Open Commodity Contracts	-45,618		125,708
% of Capital	-2.08%		4.75%
United States Metals Index Fund [Member] \| Open Futures Contracts, Long [Member] \| Foreign [Member] \| LME Tin Futures LT March 2014 contracts, expiring March 2014 [Member]	'		'
Number of Contracts	4		'
Unrealized Gain (Loss) on Open Commodity Contracts	9,460		'
% of Capital	0.43%		'
United States Metals Index Fund [Member] \| Open Futures Contracts, Long [Member] \| Foreign [Member] \| LME Lead Futures LL April 2014 contracts, expiring April 2014 [Member]	'		'
Number of Contracts	6		'
Unrealized Gain (Loss) on Open Commodity Contracts	81		'
% of Capital	0.00%		'
United States Metals Index Fund [Member] \| Open Futures Contracts, Long [Member] \| Foreign [Member] \| LME Aluminum Futures LA January 2014 contracts, expiring January 2014 [Member]	'		'
Number of Contracts	15		'
Unrealized Gain (Loss) on Open Commodity Contracts	-71,431		'
% of Capital	-3.25%		'
United States Metals Index Fund [Member] \| Open Futures Contracts, Long [Member] \| Foreign [Member] \| LME Zinc Futures LX January 2014 contracts, expiring January 2014 [Member]	'		'
Number of Contracts	10		'
Unrealized Gain (Loss) on Open Commodity Contracts	31,863		'
% of Capital	1.45%		'
United States Metals Index Fund [Member] \| Open Futures Contracts, Long [Member] \| Foreign [Member] \| LME Nickel Futures LN March 2014 contracts, expiring March 2014 [Member]	'		'
Number of Contracts	6		'
Unrealized Gain (Loss) on Open Commodity Contracts	-10,566		'
% of Capital	-0.48%		'
United States Metals Index Fund [Member] \| Open Futures Contracts, Long [Member] \| Foreign [Member] \| LME Aluminum Futures LA March 2013 contracts, expiring March 2013 [Member]	'		'
Number of Contracts	'		24
Unrealized Gain (Loss) on Open Commodity Contracts	'		45,163
% of Capital	'		1.71%
United States Metals Index Fund [Member] \| Open Futures Contracts, Long [Member] \| Foreign [Member] \| LME Tin Futures LT August 2013 contracts, expiring August 2013 [Member]	'		'
Number of Contracts	'		2
Unrealized Gain (Loss) on Open Commodity Contracts	'		10
% of Capital	'		0.00%
United States Metals Index Fund [Member] \| Open Futures Contracts, Long [Member] \| Foreign [Member] \| LME Lead Futures LL February 2013 contracts, expiring February 2013 [Member]	'		'
Number of Contracts	'		3
Unrealized Gain (Loss) on Open Commodity Contracts	'		1,981
% of Capital	'		0.07%
United States Metals Index Fund [Member] \| Open Futures Contracts, Long [Member] \| Foreign [Member] \| LME Tin Futures LT January 2013 contracts, expiring January 2013 [Member]	'		'
Number of Contracts	'		3
Unrealized Gain (Loss) on Open Commodity Contracts	'		42,880
% of Capital	'		1.62%
United States Metals Index Fund [Member] \| Open Futures Contracts, Long [Member] \| Foreign [Member] \| LME Zinc Futures LX June 2014 contracts, expiring June 2014 [Member]	'		'
Number of Contracts	5		'
Unrealized Gain (Loss) on Open Commodity Contracts	-3,181		'
% of Capital	-0.15%		'
United States Metals Index Fund [Member] \| Open Futures Contracts, Long [Member] \| Foreign [Member] \| LME Aluminum Futures LA January 2015 contracts, expiring January 2015 [Member]	'		'
Number of Contracts	6		'
Unrealized Gain (Loss) on Open Commodity Contracts	-1,844		'
% of Capital	-0.08%		'
United States Metals Index Fund [Member] \| Open Futures Contracts, Long [Member] \| Foreign [Member] \| LME Nickel Futures LN February 2013 contracts, expiring February 2013 [Member]	'		'
Number of Contracts	'		4
Unrealized Gain (Loss) on Open Commodity Contracts	'		9,768
% of Capital	'		0.37%
United States Metals Index Fund [Member] \| Open Futures Contracts, Long [Member] \| Foreign [Member] \| LME Zinc Futures LX June 2013 contracts, expiring June 2013 [Member]	'		'
Number of Contracts	'		7
Unrealized Gain (Loss) on Open Commodity Contracts	'		25,906
% of Capital	'		0.98%
United States Metals Index Fund [Member] \| Open Futures Contracts, Long [Member] \| United States Contracts [Member]	'		'
Number of Contracts	15		14
Unrealized Gain (Loss) on Open Commodity Contracts	-33,683		-31,335
% of Capital	-1.53%		-1.18%
United States Metals Index Fund [Member] \| Open Futures Contracts, Long [Member] \| United States Contracts [Member] \| COMEX Copper Futures HG March 2014 contracts, expiring March 2014 [Member]	'		'
Number of Contracts	6		'
Unrealized Gain (Loss) on Open Commodity Contracts	16,812		'
% of Capital	0.77%		'
United States Metals Index Fund [Member] \| Open Futures Contracts, Long [Member] \| United States Contracts [Member] \| COMEX Copper Futures HG March 2013 contracts, expiring March 2013 [Member]	'		'
Number of Contracts	'		6
Unrealized Gain (Loss) on Open Commodity Contracts	'		12,175
% of Capital	'		0.46%
United States Metals Index Fund [Member] \| Open Futures Contracts, Long [Member] \| United States Contracts [Member] \| NYMEX Platinum Futures PL April 2013 contracts, expiring April 2013 [Member]	'		'
Number of Contracts	'		2
Unrealized Gain (Loss) on Open Commodity Contracts	'		-2,900
% of Capital	'		-0.11%
United States Metals Index Fund [Member] \| Open Futures Contracts, Long [Member] \| United States Contracts [Member] \| COMEX Silver Futures SI March 2014 contracts, expiring March 2014 [Member]	'		'
Number of Contracts	3		'
Unrealized Gain (Loss) on Open Commodity Contracts	-45,885		'
% of Capital	-2.09%		'
United States Metals Index Fund [Member] \| Open Futures Contracts, Long [Member] \| United States Contracts [Member] \| NYMEX Palladium Futures PA March 2014 contracts, expiring March 2014 [Member]	'		'
Number of Contracts	3		'
Unrealized Gain (Loss) on Open Commodity Contracts	-2,960		'
% of Capital	-0.13%		'
United States Metals Index Fund [Member] \| Open Futures Contracts, Long [Member] \| United States Contracts [Member] \| COMEX Gold Futures GC April 2014 contracts, expiring April 2014 [Member]	'		'
Number of Contracts	3		'
Unrealized Gain (Loss) on Open Commodity Contracts	-1,650		'
% of Capital	-0.08%		'
United States Metals Index Fund [Member] \| Open Futures Contracts, Long [Member] \| United States Contracts [Member] \| CME Palladium Futures PA March 2013 contracts, expiring March 2013 [Member]	'		'
Number of Contracts	'		1
Unrealized Gain (Loss) on Open Commodity Contracts	'		275
% of Capital	'		0.01%
United States Metals Index Fund [Member] \| Open Futures Contracts, Long [Member] \| United States Contracts [Member] \| COMEX Gold Futures GC April 2013 contracts, expiring April 2013 [Member]	'		'
Number of Contracts	'		2
Unrealized Gain (Loss) on Open Commodity Contracts	'		3,250
% of Capital	'		0.13%
United States Metals Index Fund [Member] \| Open Futures Contracts, Long [Member] \| United States Contracts [Member] \| COMEX Silver Futures SI May 2013 contracts, expiring May 2013 [Member]	'		'
Number of Contracts	'		3
Unrealized Gain (Loss) on Open Commodity Contracts	'		-44,135
% of Capital	'		-1.67%
United States Metals Index Fund [Member] \| Open Futures Contracts, Short [Member] \| Foreign [Member]	'		'
Number of Contracts	38	[8]	27	[8]
Unrealized Gain (Loss) on Open Commodity Contracts	33,008	[8]	-48,315	[8]
% of Capital	1.50%	[8]	-1.83%	[8]
United States Metals Index Fund [Member] \| Open Futures Contracts, Short [Member] \| Foreign [Member] \| LME Tin Futures LT March 2014 contracts, expiring March 2014 [Member]	'		'
Number of Contracts	3	[8]	'
Unrealized Gain (Loss) on Open Commodity Contracts	10,236	[8]	'
% of Capital	0.47%	[8]	'
United States Metals Index Fund [Member] \| Open Futures Contracts, Short [Member] \| Foreign [Member] \| LME Lead Futures LL April 2014 contracts, expiring April 2014 [Member]	'		'
Number of Contracts	6	[8]	'
Unrealized Gain (Loss) on Open Commodity Contracts	-10,233	[8]	'
% of Capital	-0.47%	[8]	'
United States Metals Index Fund [Member] \| Open Futures Contracts, Short [Member] \| Foreign [Member] \| LME Aluminum Futures LA January 2014 contracts, expiring January 2014 [Member]	'		'
Number of Contracts	15	[8]	'
Unrealized Gain (Loss) on Open Commodity Contracts	27,961	[8]	'
% of Capital	1.27%	[8]	'
United States Metals Index Fund [Member] \| Open Futures Contracts, Short [Member] \| Foreign [Member] \| LME Zinc Futures LX January 2014 contracts, expiring January 2014 [Member]	'		'
Number of Contracts	10	[8]	'
Unrealized Gain (Loss) on Open Commodity Contracts	-3,963	[8]	'
% of Capital	-0.18%	[8]	'
United States Metals Index Fund [Member] \| Open Futures Contracts, Short [Member] \| Foreign [Member] \| LME Nickel Futures LN March 2014 contracts, expiring March 2014 [Member]	'		'
Number of Contracts	4	[8]	'
Unrealized Gain (Loss) on Open Commodity Contracts	9,007	[8]	'
% of Capital	0.41%	[8]	'
United States Metals Index Fund [Member] \| Open Futures Contracts, Short [Member] \| Foreign [Member] \| LME Aluminum Futures LA March 2013 contracts, expiring March 2013 [Member]	'		'
Number of Contracts	'		18	[8]
Unrealized Gain (Loss) on Open Commodity Contracts	'		-42,123	[8]
% of Capital	'		-1.59%	[8]
United States Metals Index Fund [Member] \| Open Futures Contracts, Short [Member] \| Foreign [Member] \| LME Tin Futures LT January 2013 contracts, expiring January 2013 [Member]	'		'
Number of Contracts	'		3	[8]
Unrealized Gain (Loss) on Open Commodity Contracts	'		-7,951	[8]
% of Capital	'		-0.30%	[8]
United States Metals Index Fund [Member] \| Open Futures Contracts, Short [Member] \| Foreign [Member] \| LME Nickel Futures LN February 2013 contracts, expiring February 2013 [Member]	'		'
Number of Contracts	'		2	[8]
Unrealized Gain (Loss) on Open Commodity Contracts	'		615	[8]
% of Capital	'		0.02%	[8]
United States Metals Index Fund [Member] \| Open Futures Contracts, Short [Member] \| Foreign [Member] \| LME Zinc Futures LX June 2013 contracts, expiring June 2013 [Member]	'		'
Number of Contracts	'		4	[8]
Unrealized Gain (Loss) on Open Commodity Contracts	'		1,144	[8]
% of Capital	'		0.04%	[8]
United States Metals Index Fund [Member] \| Cash Equivalents [Member] \| US Treasury Securities [Member]	'		'
Market Value	1,199,914		'
% of Capital	54.61%		'
United States Metals Index Fund [Member] \| Cash Equivalents [Member] \| US Treasury Securities [Member] \| U.S.Treasury Bills 0.05%, 1/09/2014 [Member]	'		'
Principal Amount	600,000		'
Market Value	599,992		'
% of Capital	27.31%		'
United States Metals Index Fund [Member] \| Cash Equivalents [Member] \| US Treasury Securities [Member] \| U.S.Treasury Bills 0.06%, 1/09/2014 [Member]	'		'
Principal Amount	100,000		'
Market Value	99,999		'
% of Capital	4.55%		'
United States Metals Index Fund [Member] \| Cash Equivalents [Member] \| US Treasury Securities [Member] \| U.S.Treasury Bills 0.05%, 3/27/2014 [Member]	'		'
Principal Amount	200,000		'
Market Value	199,979		'
% of Capital	9.10%		'
United States Metals Index Fund [Member] \| Cash Equivalents [Member] \| US Treasury Securities [Member] \| U.S.Treasury Bills 0.06%, 4/17/2014 [Member]	'		'
Principal Amount	200,000		'
Market Value	199,966		'
% of Capital	9.10%		'
United States Metals Index Fund [Member] \| Cash Equivalents [Member] \| US Treasury Securities [Member] \| U.S.Treasury Bills 0.07%, 4/24/2014 [Member]	'		'
Principal Amount	100,000		'
Market Value	99,978		'
% of Capital	4.55%		'

[1]	Collateral amounted to $20,013,191 on open futures contracts.
[2]	All short contracts are offset by the same number of Futures Contracts in the corresponding long positions and are acquired solely for the purpose of reducing a long position (e.g., due to a redemption or to reflect a rebalancing of the SDCI).
[3]	Collateral amounted to $428,041 on open futures contracts.
[4]	Collateral amounted to $230,081 on open futures contracts.
[5]	Collateral amounted to $673,421 on open futures contracts.
[6]	Collateral amounted to $329,598 on open futures contracts.
[7]	Collateral amounted to $462,075 on open futures contracts.
[8]	All short contracts are offset by the same number of Futures Contracts in the corresponding long positions and are acquired solely for the purpose of reducing a long position (e.g., due to a redemption or to reflect a rebalancing of the SDMI).

Schedule_of_Investments_Parent

Schedule of Investments (Parenthetical) (USD $)

12 Months Ended

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

United States Commodity Index Fund [Member]

United States Copper Index Fund [Member]

United States Agriculture Index Fund [Member]

United States Metals Index Fund [Member]

Open Futures Contracts, Long [Member]

Open Futures Contracts, Short [Member]

Cash Equivalents [Member]

Open Futures Contracts, Long [Member]

Cash Equivalents [Member]

Open Futures Contracts, Long [Member]

Cash Equivalents [Member]

Open Futures Contracts, Long [Member]

Open Futures Contracts, Short [Member]

Cash Equivalents [Member]

Foreign [Member]

United States [Member]

Foreign [Member]

US Treasury Securities [Member]

United States Contracts [Member]

US Treasury Securities [Member]

Foreign [Member]

United States [Member]

US Treasury Securities [Member]

Foreign [Member]

United States [Member]

Foreign [Member]

US Treasury Securities [Member]

ICE-US Cotton #2 Futures CT July 2014 contracts, expiring July 2014 [Member]

LME Tin Futures LT March 2014 contracts, expiring March 2014 [Member]

LME Lead Futures LL April 2014 contracts, expiring April 2014 [Member]

LME Zinc Futures LX April 2014 contracts, expiring April 2014 [Member]

ICE-US Cocoa Futures CC May 2014 contracts, expiring May 2014 [Member]

ICE Brent Crude Oil Futures CO June 2014 contracts, expiring May 2014 [Member]

ICE-US Cocoa Futures CC March 2013 contracts, expiring March 2013 [Member]

ICE-US Sugar #11 Futures SB May 2013 contracts, expiring April 2013 [Member]

LME Tin Futures LT January 2013 contracts, expiring January 2013 [Member]

LME Lead Futures LL February 2013 contracts, expiring February 2013 [Member]

LME Aluminum Futures LA March 2013 contracts, expiring March 2013 [Member]

LME Tin Futures LT August 2013 contracts, expiring August 2013 [Member]

ICE-UK Gasoil Futures QS June 2014 contracts, expiring June 2014 [Member]

LME Lead Futures LL June 2014 contracts, expiring June 2014 [Member]

NYMEX Platinum Futures PL April 2014 contracts, expiring April 2014 [Member]

LME Aluminum Futures LA January 2013 contracts, expiring January 2013 [Member]

ICE Brent Crude Oil Futures CO March 2013 contracts, expiring February 2013 [Member]

ICE-UK Gasoil Futures QS June 2013 contracts, expiring June 2013 [Member]

CME Feeder Cattle Futures FC March 2014 contracts, expiring March 2014 [Member]

COMEX Copper Futures HG March 2014 contracts, expiring March 2014 [Member]

CME Live Cattle Futures LC February 2014 contracts, expiring February 2014 [Member]

NYMEX Natural Gas Futures NG April 2014 contracts, expiring March 2014 [Member]

NYMEX WTI Crude Oil Futures CL April 2014 contracts, expiring March 2014 [Member]

NYMEX Heating Oil Futures HO June 2014 contracts, expiring May 2014 [Member]

CBOT Corn Futures C December 2013 contracts, expiring December 2013 [Member]

CBOT Soybean Futures S November 2014 contracts, expiring November 2014 [Member]

CBOT Soybean Futures S November 2013 contracts, expiring November 2013 [Member]

CBOT Soybean Meal Futures SM May 2014 contracts, expiring May 2014 [Member]

CBOT Soybean Meal Futures SM March 2013 contracts, expiring March 2013 [Member]

CME Live Cattle Futures LC April 2013 contracts, expiring April 2013 [Member]

NYMEX Platinum Futures PL April 2013 contracts, expiring April 2013 [Member]

NYMEX RBOB Gasoline Futures RB December 2014 contracts, expiring November 2014 [Member]

NYMEX Platinum Futures PL April 2014 contracts, expiring April 2014 [Member]

NYMEX Heating Oil Futures HO April Twenty Fourteen contracts, expiring March [Member]

CBOT Wheat Futures W July 2013 contracts, expiring July 2013 [Member]

NYMEX RBOB Gasoline Futures XB December Twenty Thirteen contracts, expiring November [Member]