XML 12 R39.htm IDEA: XBRL DOCUMENT
v2.4.1.9

Oil and Gas Properties Additional Details (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended
--- | ---
Mar. 31, 2015 | Mar. 31, 2014
Proceeds from sales of oil and gas properties, net | $ 2,000 us-gaap_ProceedsFromSaleOfOilAndGasPropertyAndEquipment | $ 0 us-gaap_ProceedsFromSaleOfOilAndGasPropertyAndEquipment
NORTH DAKOTA |  |
Gain (Loss) on Disposition of Proved Property | 1,176 us-gaap_GainLossOnSaleOfProvedProperty / us-gaap_StatementGeographicalAxis = stpr_ND |
Gas and Oil Area, Undeveloped, Net | 290 us-gaap_GasAndOilAreaUndevelopedNet / us-gaap_StatementGeographicalAxis = stpr_ND |
Proceeds from sales of oil and gas properties, net | $ 2,000 us-gaap_ProceedsFromSaleOfOilAndGasPropertyAndEquipment / us-gaap_StatementGeographicalAxis = stpr_ND |

X
- Definition Amount of gain (loss) on sale or disposal of property with proven oil and gas reserves. + References Reference 1: 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=56944662&loc=d3e3602-108585 + Details
Name: | us-gaap_GainLossOnSaleOfProvedProperty
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Fractional interest owned based on working interests or other economic arrangements of lease area on which wells have not been drilled or completed to a point that would permit the production of commercial quantities of oil and gas regardless of whether or not such area contains proved reserves. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K (SK) -Number 229 -Section 1208 -Paragraph (b) + Details
Name: | us-gaap_GasAndOilAreaUndevelopedNet
Namespace Prefix: | us-gaap_
Data Type: | num:areaItemType
Balance Type: | na
Period Type: | instant

X
- 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 Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 Reference 2: 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=56944662&loc=d3e3179-108585 + Details
Name: | us-gaap_ProceedsFromSaleOfOilAndGasPropertyAndEquipment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_StatementGeographicalAxis=stpr_ND
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |