2.2.0.25falsefalse0213 - Disclosure - Financial Instruments and Credit Risktruefalsefalse1falsefalseUSDfalsefalse1/1/2010 - 12/31/2010 USD ($) USD ($) / shares $TwelveMonthsEnded_31Dec2010http://www.sec.gov/CIK0001458891duration2010-01-01T00:00:002010-12-31T00:00:00PureStandardhttp://www.xbrl.org/2003/instancepurexbrli0USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDEPSDividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli0SharesStandardhttp://www.xbrl.org/2003/instancesharesxbrli0USDUSD$2true0ne_FinancialInstrumentsAndCreditRiskAbstractnefalsenadurationFinancial instruments and credit risk.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringFinancial instruments and credit risk.falsefalseFinancial Instruments and Credit Risk [Abstract]3false0us-gaap_FairValueDisclosuresTextBlockus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00   <div style="font-family: 'Times New Roman',Times,serif; margin-left: 0in; "> <div align="justify" style="font-size: 10pt; margin-top: 10pt"><b>Note 13 — Financial Instruments and Credit Risk</b> </div> <div align="justify" style="font-size: 10pt; margin-top: 10pt; text-indent: 8%">The following table presents the carrying amount and estimated fair value of our financial instruments recognized at fair value on a recurring basis: </div> <div align="center"> <table style="font-size: 10pt; text-align: left" cellspacing="0" border="0" cellpadding="0" width="100%">  <tr valign="bottom"> <td width="28%"> </td> <td width="3%"> </td> <td width="1%"> </td> <td width="7%"> </td> <td width="1%"> </td> <td width="3%"> </td> <td width="1%"> </td> <td width="7%"> </td> <td width="1%"> </td> <td width="3%"> </td> <td width="1%"> </td> <td width="7%"> </td> <td width="1%"> </td> <td width="3%"> </td> <td width="1%"> </td> <td width="7%"> </td> <td width="1%"> </td> <td width="3%"> </td> <td width="1%"> </td> <td width="7%"> </td> <td width="1%"> </td> <td width="3%"> </td> <td width="1%"> </td> <td width="7%"> </td> <td width="1%"> </td> </tr> <tr style="font-size: 10pt" valign="bottom"> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td nowrap="nowrap" align="center" colspan="10" style="border-bottom: 1px solid #000000"><b>December 31, 2010</b></td> <td> </td> <td> </td> <td nowrap="nowrap" align="center" colspan="6" style="border-bottom: 1px solid #000000"><b>December 31, 2009</b></td> <td> </td> </tr> <tr style="font-size: 10pt" valign="bottom"> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td nowrap="nowrap" align="center" colspan="10"><b>Estimated Fair Value</b></td> <td> </td> <td> </td> <td nowrap="nowrap" align="center" colspan="2"> </td> <td> </td> <td> </td> <td nowrap="nowrap" align="center" colspan="2"> </td> <td> </td> </tr> <tr style="font-size: 10pt" valign="bottom"> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td nowrap="nowrap" align="center" colspan="10" style="border-bottom: 1px solid #000000"><b>Measurements</b></td> <td> </td> <td> </td> <td nowrap="nowrap" align="center" colspan="2"> </td> <td> </td> <td> </td> <td nowrap="nowrap" align="center" colspan="2"> </td> <td> </td> </tr> <tr style="font-size: 10pt" valign="bottom"> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td nowrap="nowrap" align="center" colspan="2"><b>Quoted</b></td> <td> </td> <td> </td> <td nowrap="nowrap" align="center" colspan="2"><b>Significant</b></td> <td> </td> <td> </td> <td nowrap="nowrap" align="center" colspan="2"> </td> <td> </td> <td> </td> <td nowrap="nowrap" align="center" colspan="2"> </td> <td> </td> <td> </td> <td nowrap="nowrap" align="center" colspan="2"> </td> <td> </td> </tr> <tr style="font-size: 10pt" valign="bottom"> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td nowrap="nowrap" align="center" colspan="2"><b>Prices in</b></td> <td> </td> <td> </td> <td nowrap="nowrap" align="center" colspan="2"><b>Other</b></td> <td> </td> <td> </td> <td nowrap="nowrap" align="center" colspan="2"><b>Significant</b></td> <td> </td> <td> </td> <td nowrap="nowrap" align="center" colspan="2"> </td> <td> </td> <td> </td> <td nowrap="nowrap" align="center" colspan="2"> </td> <td> </td> </tr> <tr style="font-size: 10pt" valign="bottom"> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td nowrap="nowrap" align="center" colspan="2"><b>Active</b></td> <td> </td> <td> </td> <td nowrap="nowrap" align="center" colspan="2"><b>Observable</b></td> <td> </td> <td> </td> <td nowrap="nowrap" align="center" colspan="2"><b>Unobservable</b></td> <td> </td> <td> </td> <td nowrap="nowrap" align="center" colspan="2"> </td> <td> </td> <td> </td> <td nowrap="nowrap" align="center" colspan="2"> </td> <td> </td> </tr> <tr style="font-size: 10pt" valign="bottom"> <td> </td> <td> </td> <td nowrap="nowrap" align="center" colspan="2"><b>Carrying</b></td> <td> </td> <td> </td> <td nowrap="nowrap" align="center" colspan="2"><b>Markets</b></td> <td> </td> <td> </td> <td nowrap="nowrap" align="center" colspan="2"><b>Inputs</b></td> <td> </td> <td> </td> <td nowrap="nowrap" align="center" colspan="2"><b>Inputs</b></td> <td> </td> <td> </td> <td nowrap="nowrap" align="center" colspan="2"><b>Carrying</b></td> <td> </td> <td> </td> <td nowrap="nowrap" align="center" colspan="2"><b>Estimated</b></td> <td> </td> </tr> <tr style="font-size: 10pt" valign="bottom"> <td> </td> <td> </td> <td nowrap="nowrap" align="center" colspan="2" style="border-bottom: 1px solid #000000"><b>Amount</b></td> <td> </td> <td> </td> <td nowrap="nowrap" align="center" colspan="2" style="border-bottom: 1px solid #000000"><b>(Level 1)</b></td> <td> </td> <td> </td> <td nowrap="nowrap" align="center" colspan="2" style="border-bottom: 1px solid #000000"><b>(Level 2)</b></td> <td> </td> <td> </td> <td nowrap="nowrap" align="center" colspan="2" style="border-bottom: 1px solid #000000"><b>(Level 3)</b></td> <td> </td> <td> </td> <td nowrap="nowrap" align="center" colspan="2" style="border-bottom: 1px solid #000000"><b>Amount</b></td> <td> </td> <td> </td> <td nowrap="nowrap" align="center" colspan="2" style="border-bottom: 1px solid #000000"><b>Fair Value</b></td> <td> </td> </tr>   <tr valign="bottom" style="background: #cceeff"> <td> <div style="margin-left:15px; text-indent:-15px"><b>Assets -</b> </div></td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> </tr> <tr valign="bottom"> <td> <div style="margin-left:30px; text-indent:-15px">Marketable securities </div></td> <td> </td> <td align="left">$</td> <td align="right">6,854</td> <td> </td> <td> </td> <td align="left">$</td> <td align="right">6,854</td> <td> </td> <td> </td> <td align="left">$</td> <td align="right">—</td> <td> </td> <td> </td> <td align="left">$</td> <td align="right">—</td> <td> </td> <td> </td> <td align="left">$</td> <td align="right">8,483</td> <td> </td> <td> </td> <td align="left">$</td> <td align="right">8,483</td> <td> </td> </tr> <tr valign="bottom" style="background: #cceeff"> <td> <div style="margin-left:30px; text-indent:-15px">Foreign currency forward contracts </div></td> <td> </td> <td> </td> <td align="right">4,618</td> <td> </td> <td> </td> <td> </td> <td align="right">—</td> <td> </td> <td> </td> <td> </td> <td align="right">4,618</td> <td> </td> <td> </td> <td> </td> <td align="right">—</td> <td> </td> <td> </td> <td> </td> <td align="right">654</td> <td> </td> <td> </td> <td> </td> <td align="right">654</td> <td> </td> </tr> <tr valign="bottom"> <td> <div style="margin-left:15px; text-indent:-15px">  </div></td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> </tr> <tr valign="bottom"> <td> <div style="margin-left:15px; text-indent:-15px"><b>Liabilities -</b> </div></td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> <td> </td> </tr> <tr valign="bottom" style="background: #cceeff"> <td> <div style="margin-left:30px; text-indent:-15px">Interest rate swaps </div></td> <td> </td> <td align="left">$</td> <td align="right">26,590</td> <td> </td> <td> </td> <td align="left">$</td> <td align="right">—</td> <td> </td> <td> </td> <td align="left">$</td> <td align="right">26,590</td> <td> </td> <td> </td> <td align="left">$</td> <td align="right">—</td> <td> </td> <td> </td> <td align="left">$</td> <td align="right">—</td> <td> </td> <td> </td> <td align="left">$</td> <td align="right">—</td> <td> </td> </tr> <tr valign="bottom"> <td> <div style="margin-left:30px; text-indent:-15px">Foreign currency forward contracts </div></td> <td> </td> <td> </td> <td align="right">3,718</td> <td> </td> <td> </td> <td> </td> <td align="right">—</td> <td> </td> <td> </td> <td> </td> <td align="right">3,718</td> <td> </td> <td> </td> <td> </td> <td align="right">—</td> <td> </td> <td> </td> <td> </td> <td align="right">1,002</td> <td> </td> <td> </td> <td> </td> <td align="right">1,002</td> <td> </td> </tr>  </table> </div> <div align="justify" style="font-size: 10pt; margin-top: 10pt; text-indent: 8%">The derivative instruments have been valued using actively quoted prices and quotes obtained from the counterparties to the derivative agreements. Our cash and cash equivalents, accounts receivable and accounts payable are by their nature short-term. As a result, the carrying values included in the accompanying Consolidated Balance Sheets approximate fair value. </div> <div align="justify" style="font-size: 10pt; margin-top: 10pt"><b><i>Concentration of Credit Risk</i></b> </div> <div align="justify" style="font-size: 10pt; margin-top: 10pt; text-indent: 8%">The market for our services is the offshore oil and gas industry, and our customers consist primarily of government-owned oil companies, major integrated oil companies and independent oil and gas producers. We perform ongoing credit evaluations of our customers and generally do not require material collateral. We maintain reserves for potential credit losses when necessary. Our results of operations and financial condition should be considered in light of the fluctuations in demand experienced by drilling contractors as changes in oil and gas producers’ expenditures and budgets occur. These fluctuations can impact our results of operations and financial condition as supply and demand factors directly affect utilization and dayrates, which are the primary determinants of our net cash provided by operating activities. </div> <div align="justify" style="font-size: 10pt; margin-top: 10pt; text-indent: 8%">In 2010, three customers combined for approximately 50 percent of our consolidated operating revenues. No other customer accounted for more than 10 percent of consolidated operating revenues in 2010. In 2009, two customers accounted for approximately 35 percent of consolidated operating revenues. In 2008, one customer accounted for approximately 20 percent of our revenues. No other customer accounted for more than 10 percent of consolidated operating revenues in 2010, 2009 or 2008. </div> </div>  <!-- Begin Block Tagged NotefalsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringThis item represents the complete disclosure regarding the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments, assets, and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the Company is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risk is are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 107 -Paragraph 15B -Subparagraph a, b Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 107 -Paragraph 3, 10, 14, 15 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 133 -Paragraph 44A, 44B Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 157 -Paragraph 32, 33, 34 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 107 -Paragraph 15C, 15D Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 107 -Paragraph 15A -Subparagraph a-d Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 159 -Paragraph 17-22, 27, 28 falsefalseFinancial Instruments and Credit Risk12Financial Instruments and Credit RiskUnKnownUnKnownUnKnownUnKnownfalsetrue