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v2.4.1.9

Statements of Cash Flows (USD $) | 12 Months Ended
--- | ---
Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Cash Flows from Operating Activities: |  |  |
Net income (loss) | $ (3,971,981)us-gaap_NetIncomeLoss | $ 4,089,602 us-gaap_NetIncomeLoss | $ (4,829,192)us-gaap_NetIncomeLoss
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities: |  |  |
(Increase) decrease in commodity futures trading account - cash and cash equivalents | (4,576,085)us-gaap_IncreaseDecreaseInFinancialInstrumentsUsedInOperatingActivities | 3,466,968 us-gaap_IncreaseDecreaseInFinancialInstrumentsUsedInOperatingActivities | 5,715,124 us-gaap_IncreaseDecreaseInFinancialInstrumentsUsedInOperatingActivities
Unrealized (gain) loss on futures contracts | 6,009,940 us-gaap_UnrealizedGainLossOnDerivativesAndCommodityContracts | (1,996,630)us-gaap_UnrealizedGainLossOnDerivativesAndCommodityContracts | (7,676,740)us-gaap_UnrealizedGainLossOnDerivativesAndCommodityContracts
(Increase) decrease in receivable from General Partner | 34,314 us-gaap_IncreaseDecreaseDueFromOfficersAndStockholders | (32,077)us-gaap_IncreaseDecreaseDueFromOfficersAndStockholders | 44,666 us-gaap_IncreaseDecreaseDueFromOfficersAndStockholders
(Increase) decrease in dividends receivable | 425 us-gaap_IncreaseDecreaseInDividendsReceivable | (249)us-gaap_IncreaseDecreaseInDividendsReceivable | (228)us-gaap_IncreaseDecreaseInDividendsReceivable
(Increase) decrease in interest receivable | 0 us-gaap_IncreaseDecreaseInAccruedInterestReceivableNet | 0 us-gaap_IncreaseDecreaseInAccruedInterestReceivableNet | 8 us-gaap_IncreaseDecreaseInAccruedInterestReceivableNet
(Increase) decrease in directors' fees and insurance receivable | (277)unl_IncreaseDecreaseInDirectorsFeeReceivable | (688)unl_IncreaseDecreaseInDirectorsFeeReceivable | 526 unl_IncreaseDecreaseInDirectorsFeeReceivable
(Increase) decrease in ETF transaction fees receivable | (350)us-gaap_IncreaseDecreaseInAccountsAndOtherReceivables | 0 us-gaap_IncreaseDecreaseInAccountsAndOtherReceivables | 0 us-gaap_IncreaseDecreaseInAccountsAndOtherReceivables
Increase (decrease) in investment payable | 0 us-gaap_IncreaseDecreaseInTradingLiabilities | 0 us-gaap_IncreaseDecreaseInTradingLiabilities | (8)us-gaap_IncreaseDecreaseInTradingLiabilities
Increase (decrease) in General Partner management fees payable | (7,276)unl_IncreaseDecreaseManagementFeesPayable | (10,280)unl_IncreaseDecreaseManagementFeesPayable | 13,964 unl_IncreaseDecreaseManagementFeesPayable
Increase (decrease) in professional fees payable | (70,453)unl_IncreaseDecreaseInProfessionalFeesPayable | 25,229 unl_IncreaseDecreaseInProfessionalFeesPayable | (25,802)unl_IncreaseDecreaseInProfessionalFeesPayable
Increase (decrease) in brokerage commissions payable | (1,027)us-gaap_IncreaseDecreaseInPayablesToBrokerDealers | (1,400)us-gaap_IncreaseDecreaseInPayablesToBrokerDealers | (252)us-gaap_IncreaseDecreaseInPayablesToBrokerDealers
Increase (decrease) in license fees payable | (372)unl_IncreaseDecreaseInLicenseFeesPayable | (790)unl_IncreaseDecreaseInLicenseFeesPayable | 714 unl_IncreaseDecreaseInLicenseFeesPayable
Net cash provided by (used in) operating activities | (2,583,142)us-gaap_NetCashProvidedByUsedInOperatingActivities | 5,539,685 us-gaap_NetCashProvidedByUsedInOperatingActivities | (6,757,220)us-gaap_NetCashProvidedByUsedInOperatingActivities
Cash Flows from Financing Activities: |  |  |
Addition of partnership shares | 4,169,264 us-gaap_ProceedsFromPartnershipContribution | 5,962,931 us-gaap_ProceedsFromPartnershipContribution | 33,083,248 us-gaap_ProceedsFromPartnershipContribution
Redemption of partnership shares | (11,987,259)unl_PaymentsToPartnershipRedemption | (25,655,241)unl_PaymentsToPartnershipRedemption | (6,377,911)unl_PaymentsToPartnershipRedemption
Net cash provided by (used in) financing activities | (7,817,995)us-gaap_NetCashProvidedByUsedInFinancingActivities | (19,692,310)us-gaap_NetCashProvidedByUsedInFinancingActivities | 26,705,337 us-gaap_NetCashProvidedByUsedInFinancingActivities
Net Increase (Decrease) in Cash and Cash Equivalents | (10,401,137)us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease | (14,152,625)us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease | 19,948,117 us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease
Cash and Cash Equivalents, beginning of year | 25,514,584 us-gaap_CashAndCashEquivalentsAtCarryingValue | 39,667,209 us-gaap_CashAndCashEquivalentsAtCarryingValue | 19,719,092 us-gaap_CashAndCashEquivalentsAtCarryingValue
Cash and Cash Equivalents, end of year | $ 15,113,447 us-gaap_CashAndCashEquivalentsAtCarryingValue | $ 25,514,584 us-gaap_CashAndCashEquivalentsAtCarryingValue | $ 39,667,209 us-gaap_CashAndCashEquivalentsAtCarryingValue

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