2.4.0.8033 - Disclosure - Note 4 - Accumulated Other Comprehensive Income (Loss) (Details)truefalsefalse1false USDfalsefalse$c2_From1Jan2013To30Jun2013http://www.sec.gov/CIK0001121484duration2013-01-01T00:00:002013-06-30T00:00:00usdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$2false AUDfalsefalsec4_AsOf30Jun2013http://www.sec.gov/CIK0001121484instant2013-06-30T00:00:000001-01-01T00:00:00audStandardhttp://www.xbrl.org/2003/iso4217AUDiso42170AUDAUD3false CADfalsefalsec4_AsOf30Jun2013http://www.sec.gov/CIK0001121484instant2013-06-30T00:00:000001-01-01T00:00:00cadStandardhttp://www.xbrl.org/2003/iso4217CADiso42170CADCAD4false USDfalsefalse$c5_AsOf31Dec2012http://www.sec.gov/CIK0001121484instant2012-12-31T00:00:000001-01-01T00:00:00usdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$5false truefalsec45_From1Jan2013To30Jun2013_CADhttp://www.sec.gov/CIK0001121484duration2013-01-01T00:00:002013-06-30T00:00:00falsefalseCanada, Dollarsus-gaap_CurrencyAxisxbrldihttp://xbrl.org/2006/xbrldicurrency_CADus-gaap_CurrencyAxisexplicitMemberpureStandardhttp://www.xbrl.org/2003/instancepurexbrli06false truefalsec44_AsOf31Dec2012_CADhttp://www.sec.gov/CIK0001121484instant2012-12-31T00:00:000001-01-01T00:00:00falsefalseCanada, Dollarsus-gaap_CurrencyAxisxbrldihttp://xbrl.org/2006/xbrldicurrency_CADus-gaap_CurrencyAxisexplicitMemberpureStandardhttp://www.xbrl.org/2003/instancepurexbrli07false truefalsec48_From1Jan2013To30Jun2013_AUDhttp://www.sec.gov/CIK0001121484duration2013-01-01T00:00:002013-06-30T00:00:00falsefalseAustralia, Dollarsus-gaap_CurrencyAxisxbrldihttp://xbrl.org/2006/xbrldicurrency_AUDus-gaap_CurrencyAxisexplicitMemberpureStandardhttp://www.xbrl.org/2003/instancepurexbrli08false truefalsec47_AsOf31Dec2012_AUDhttp://www.sec.gov/CIK0001121484instant2012-12-31T00:00:000001-01-01T00:00:00falsefalseAustralia, Dollarsus-gaap_CurrencyAxisxbrldihttp://xbrl.org/2006/xbrldicurrency_AUDus-gaap_CurrencyAxisexplicitMemberpureStandardhttp://www.xbrl.org/2003/instancepurexbrli01true 3ois_Note4AccumulatedOtherComprehensiveIncomeLossDetailsLineItemsois_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalse6falsefalsefalse00falsefalsefalse7falsefalsefalse00falsefalsefalse8falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Note 4 - Accumulated Other Comprehensive Income (Loss) (Details) [Line Items]2false 4ois_AccumulatedOtherComprehensiveIncomeois_falsecreditinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse-62887000-62887000USD$falsetruefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4truefalsefalse107097000107097000USD$falsetruefalse5falsefalsefalse00falsefalsefalse6falsefalsefalse00falsefalsefalse7falsefalsefalse00falsefalsefalse8falsefalsefalse00falsefalsefalsexbrli:monetaryItemTypemonetaryAccumulated change in equity from transactions and other events and circumstances from non-owner sources at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge.No definition available.false2Accumulated Other Comprehensive Income (in Dollars)3false 4ois_IncreaseDecreaseInAccumulatedOtherComprehensiveIncomeois_falsecreditdurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse-170000000-170000000falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalse6falsefalsefalse00falsefalsefalse7falsefalsefalse00falsefalsefalse8falsefalsefalse00falsefalsefalsexbrli:monetaryItemTypemonetaryIncrease (decrease) in accumulated other comprehensive income.No definition available.false2Increase (Decrease) in Accumulated Other Comprehensive Income (in Dollars)4false 4us-gaap_ForeignCurrencyExchangeRateTranslation1us-gaap_truenainstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5truefalsefalse0.950.95falsefalsefalse6truefalsefalse1.011.01falsefalsefalse7truefalsefalse0.920.92falsefalsefalse8truefalsefalse1.041.04falsefalsefalsexbrli:pureItemTypepureForeign exchange rate used to translate amounts denominated in functional currency to reporting currency.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 30 -Section S99 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6897108&loc=SL6897125-166521 false0Foreign Currency Exchange Rate, Translation5false 4ois_DecreaseInForeignCurrencyExchangeRateois_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsetruefalse00falsefalsefalse2falsetruefalse00falsefalsefalse3falsetruefalse00falsefalsefalse4falsetruefalse00falsefalsefalse5truetruefalse0.060.06falsefalsefalse6falsetruefalse00falsefalsefalse7truetruefalse0.120.12falsefalsefalse8falsetruefalse00falsefalsefalsenum:percentItemTypepureDecrease in foreign currency exchange rate.No definition available.false0Decrease in Foreign Currency Exchange Rate6false 4ois_FunctionalCurrencyNetAssetsois_falsedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2truefalsefalse926000000926000000AUDfalsetruefalse3truefalsefalse880000000880000000CADfalsetruefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalse6falsefalsefalse00falsefalsefalse7falsefalsefalse00falsefalsefalse8falsefalsefalse00falsefalsefalsexbrli:monetaryItemTypemonetaryFunctional currency net assets.No definition available.false2Functional Currency Net Assets (in Dollars and Dollars)falseNote 4 - Accumulated Other Comprehensive Income (Loss) (Details)NoRoundingUnKnownUnKnownUnKnowntruefalsetrueSheethttp://oilstatesintl.com/role/Note4AccumulatedOtherComprehensiveIncomeLossDetails86