Percentage of purchase or sale price of assets deposits to customer and client.

No definition available.

Name:	husa_EscrowDepositsPercentage
Namespace Prefix:	husa_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Amount due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer), from the Company's proportionate interest.

+ References

No definition available.

+ Details

Name:	husa_EscrowReceivable-Current
Namespace Prefix:	husa_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount due from purchaser of producing oil and gas properties, after one year of the balance sheet date (or the normal operating cycle, whichever is longer), from the Company's proportionate interest.

+ References

No definition available.

+ Details

Name:	husa_EscrowReceivableNoncurrent
Namespace Prefix:	husa_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

This amount represents the increase (decrease) during the reporting period of the sum of escrow receivables.

+ References

No definition available.

+ Details

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Namespace Prefix:	husa_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Proceeds from escrow receivables during the period.

+ References

No definition available.

+ Details

Name:	husa_ProceedsFromEscrowReceivables
Namespace Prefix:	husa_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The amount received by the reporting entity associated with settlement of escrow account.

+ References

No definition available.

+ Details

Name:	husa_ProceedsFromSettlementOfEscrowAccount
Namespace Prefix:	husa_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The designation of funds furnished by a borrower to a lender to assure future payments of the borrower's real estate taxes and insurance obligations with respect to a mortgaged property. Escrow deposits may be made for a variety of other purposes such as earnest money and contingent payments. This element excludes replacement reserves which are an escrow separately provided for within the US GAAP taxonomy.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-03.10)

-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

+ Details

Name:	us-gaap_EscrowDeposit
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Escrow deposits related to property sales in noncash investing and financing activities.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 50

-Paragraph 5

-URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4332-108586

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 50

-Paragraph 4

-URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4313-108586

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 50

-Paragraph 3

-URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4304-108586

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 95

-Paragraph 32

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Gain (loss) recorded from sale of oil and gas properties, includes the realized gains (losses) on the sale of proved and unproved oil and gas properties.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 95

-Paragraph 28

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3602-108585

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 19

-Paragraph 41, 44, 45, 46, 47

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The carrying amount of other receivables, net, due within one year of the balance sheet date (or one operating cycle, if longer) from third parties or arising from transactions not separately disclosed.

+ References

No definition available.

+ Details

Name:	us-gaap_OtherReceivablesNetCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The cash inflow to dispose of long-lived, physical assets and mineral interests in oil and gas properties used for normal oil and gas operations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 95

-Paragraph 16

-Subparagraph c

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Investing Activities

-URI http://asc.fasb.org/extlink&oid=6516133

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 95

-Paragraph 15

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 12

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3179-108585

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Details

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Period Type:	duration

ESCROW RECEIVABLE (Details) (USD $)	12 Months Ended										12 Months Ended				12 Months Ended			12 Months Ended
ESCROW RECEIVABLE (Details) (USD $)	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2012 Caracara Escrow [Member]	Dec. 31, 2011 Caracara Escrow [Member]	Dec. 31, 2009 Caracara Escrow [Member]	Dec. 31, 2008 Caracara Escrow [Member]	Dec. 31, 2012 Tambaqui Escrow [Member]	Dec. 31, 2011 Tambaqui Escrow [Member]	Dec. 31, 2012 HDC LLC and HL LLC 15% Escrow [Member]	Dec. 31, 2011 HDC LLC and HL LLC 15% Escrow [Member]	Dec. 31, 2011 HDC LLC and HL LLC 5% Contingency [Member]	Dec. 31, 2012 HDC LLC and HL LLC 5% Contingency [Member]	Dec. 31, 2012 HC LLC 14.66% Escrow [Member]	Dec. 31, 2012 HC LLC 5% Contingency [Member]	Dec. 31, 2011 HDC LLC and HL LLC Escrow [Member]	Dec. 31, 2010 HDC LLC and HL LLC Escrow [Member]	Dec. 31, 2012 Hupecol Operating LLC [Member]	Dec. 31, 2012 HL LLC Escrow [Member]	Dec. 31, 2011 HL LLC Escrow [Member]	Dec. 31, 2012 HDC LLC Escrow [Member]	Dec. 31, 2011 HDC LLC Escrow [Member]
Escrow receivables relating to oil and gas properties [Abstract]
Escrow receivable - Current	$ 2,095,228	$ 1,863,332		$ 131,021			$ 22,029	$ 31,500	$ 1,827,929	$ 1,664,581	$ 36,230	$ 57,321	$ 151,048	$ 36,901
Escrow receivable - Noncurrent	0	1,664,581		0		1,673,551	0	0	0	1,664,581	0	0	0	0		7,069,810
Total	2,095,228	3,527,913		131,021			22,029	31,500	1,827,929	3,329,162	36,230	57,321	151,048	36,901
Escrow receivables, percentage (in hundredths)	13.30%								15.00%	15.00%	5.00%	5.00%	14.66%	5.00%
Cash consideration from sale of oil and gas properties	1,027,068	0				11,917,418
Funds deposited in escrow	166,995	0			1,158,613
Loss on sale of oil and gas properties for the potential payment using the escrowed funds	387,314	(1,026,608)		136,430											710,583
Proceeds from settlement of escrow account			147,581
Partial payment received from escrow											516,392							150,217	474,786	1,162,835	508,717
Amount receivable for entity's proportionate share of escrow funds	3,436,305	4,322,063															86,507
Reduction in escrow receivables																			$ 15,788		$ 694,795