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Disclosure - SUMMARIZED QUARTERLY FINANCIAL INFORMATION (UNAUDITED) (Details) Sheet http://houstonamericanenergy.com/role/SummarizedQuarterlyFinancialInformationUnauditedDetails SUMMARIZED QUARTERLY FINANCIAL INFORMATION (UNAUDITED) (Details) false false All Reports Book All Reports Element husa_GrantsIssuedToOfficers had a mix of decimals attribute values: 2 3. Element husa_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestPercentage had a mix of decimals attribute values: 1 2. Element us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate had a mix of decimals attribute values: 2 3. Element us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice had a mix of decimals attribute values: 2 4. Columns in Cash Flows statement 'CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)' have maximum duration 364 days and at least 30 values. Shorter duration columns must have at least one fourth (7) as many values. Column '1/1/2013 - 3/31/2013' is shorter (89 days) and has only 2 values, so it is being removed. Columns in Cash Flows statement 'CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)' have maximum duration 364 days and at least 30 values. Shorter duration columns must have at least one fourth (7) as many values. Column '4/1/2013 - 6/30/2013' is shorter (90 days) and has only 1 values, so it is being removed. Columns in Cash Flows statement 'CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)' have maximum duration 364 days and at least 30 values. Shorter duration columns must have at least one fourth (7) as many values. Column '7/1/2013 - 9/30/2013' is shorter (91 days) and has only 1 values, so it is being removed. Columns in Cash Flows statement 'CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)' have maximum duration 364 days and at least 30 values. Shorter duration columns must have at least one fourth (7) as many values. Column '10/1/2013 - 12/31/2013' is shorter (91 days) and has only 2 values, so it is being removed. Columns in Cash Flows statement 'CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)' have maximum duration 364 days and at least 30 values. 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