2.2.0.25falsefalse20102 - Disclosure - Basis of Presentation (Policy)truefalsefalse1falsefalseUSDfalsefalse1/1/2011 - 3/31/2011
USD ($)
USD ($) / shares
$Duration_1_1_2011_To_3_31_2011http://www.sec.gov/CIK0001037016duration2011-01-01T00:00:002011-03-31T00:00:00Unit12Standardhttp://www.xbrl.org/2003/iso4217USDiso42170Unit14Dividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli0Unit1Standardhttp://www.xbrl.org/2003/instancesharesxbrli0Unit13Standardhttp://www.xbrl.org/2003/instancepurexbrli0USDUSD$2true0nihd_BasisOfPresentationAbstractnihdfalsenadurationBasis of Presentation [Abstract]falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringBasis of Presentation [Abstract]falsefalse3false0nihd_RevenueBasedTaxesPolicyTextBlocknihdfalsenadurationRevenue Based Taxes Policy [Text Block]falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00<div> <div>
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<div style="text-indent: 32px; font-family: 'Times New Roman', Times; background: none transparent scroll repeat 0% 0%; color: #000000; margin-left: 0%; font-size: 10pt; margin-right: 0%;" align="left"><b><i>Revenue-Based Taxes.</i></b> We record revenue-based taxes and other excise taxes on a gross basis as a component of both service and other revenues and selling, general and administrative expenses in our condensed consolidated statement of operations. For the three months ended March 31, 2011 and 2010, we had $<font class="_mt">59.0</font> million and $<font class="_mt">43.5</font> million, respectively, in revenue-based taxes and other excise taxes. </div>
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Revenue-Based Taxes. We record revenue-based taxes and other excise taxes on a gross basis as a component of both service and other revenuesfalsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringRevenue Based Taxes Policy [Text Block]No authoritative reference available.falsefalse4false0us-gaap_EarningsPerSharePolicyTextBlockus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00<div> <div style="font-family: 'Times New Roman',Times,serif;">
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<div style="margin-top: 6pt; font-size: 10pt;" align="left"><b><i>Net Income Per Common Share, Basic and Diluted. </i></b>Basic net income per common share includes no dilution and is computed by dividing net income by the weighted average number of common shares outstanding for the period. Diluted net income per common share reflects the potential dilution of securities that could participate in our earnings, but not securities that are antidilutive, including stock options with an exercise price greater than the average market price of our common stock. </div>
<div style="margin-top: 6pt; font-size: 10pt;" align="left"> As presented for the three months ended March 31, 2011, our calculation of diluted net income per share includes common shares issuable upon the potential exercise of stock options under our stock-based employee compensation plans and restricted common shares issued under those plans. We did not include the common shares that could be issued upon conversion of our 3.125% convertible notes in our calculation of diluted net income per common share because their effect would have been antidilutive to our net income per common share for that period. Further, for the three months ended March 31, 2011, we did not include 9.1 million common shares issuable upon exercise of stock options or an immaterial amount of our restricted common shares in our calculation of diluted net income per common share because their effect would also have been antidilutive to our net income per common share for that period. </div>
<div style="margin-top: 6pt; font-size: 10pt;" align="left"> As presented for the three months ended March 31, 2010, our calculation of diluted net income per share includes common shares issuable upon the potential exercise of stock options under our stock-based employee compensation plans and restricted common shares issued under those plans. We did not include the common shares that could be issued upon conversion of our 3.125% convertible notes or our 2.75% convertible notes in our calculation of diluted net income per common share because their effect would have been antidilutive to our net income per common share for that period. Further, for the three months ended March 31, 2010, we did not include 8.5 million common shares issuable upon exercise of stock options in our calculation of diluted net income per common share because their effect would also have been antidilutive to our net income per common share for that period. </div>
<div style="margin-top: 6pt; font-size: 10pt;" align="left"> The following tables provide a reconciliation of the numerators and denominators used to calculate basic and diluted net income per common share as disclosed in our condensed consolidated statements of operations for the three months ended March 31, 2011 and 2010: </div>
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<table style="font-size: 10pt;" border="0" cellspacing="0" cellpadding="0" width="100%">
<tr valign="bottom"><td width="28%"> </td>
<td width="5%"> </td>
<td width="1%"> </td>
<td width="5%"> </td>
<td width="1%"> </td>
<td width="5%"> </td>
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<td width="5%"> </td>
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<td width="5%"> </td>
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<td width="5%"> </td>
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<td width="5%"> </td>
<td width="1%"> </td>
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<td width="1%"> </td>
<td width="5%"> </td>
<td width="1%"> </td></tr>
<tr style="font-size: 8pt;" valign="bottom"><td> </td>
<td> </td>
<td style="border-bottom: #000000 1px solid;" colspan="10" nowrap="nowrap" align="center"><b>Three Months Ended March 31, 2011</b></td>
<td> </td>
<td> </td>
<td style="border-bottom: #000000 1px solid;" colspan="10" nowrap="nowrap" align="center"><b>Three Months Ended March 31, 2010</b></td>
<td> </td></tr>
<tr style="font-size: 8pt;" valign="bottom"><td> </td>
<td> </td>
<td colspan="2" nowrap="nowrap" align="center"><b>Income</b></td>
<td> </td>
<td> </td>
<td colspan="2" nowrap="nowrap" align="center"><b>Shares</b></td>
<td> </td>
<td> </td>
<td colspan="2" nowrap="nowrap" align="center"><b>Per Share</b></td>
<td> </td>
<td> </td>
<td colspan="2" nowrap="nowrap" align="center"><b>Income</b></td>
<td> </td>
<td> </td>
<td colspan="2" nowrap="nowrap" align="center"><b>Shares</b></td>
<td> </td>
<td> </td>
<td colspan="2" nowrap="nowrap" align="center"><b>Per Share</b></td>
<td> </td></tr>
<tr style="font-size: 8pt;" valign="bottom"><td> </td>
<td> </td>
<td style="border-bottom: #000000 1px solid;" colspan="2" nowrap="nowrap" align="center"><b>(Numerator)</b></td>
<td> </td>
<td> </td>
<td style="border-bottom: #000000 1px solid;" colspan="2" nowrap="nowrap" align="center"><b>(Denominator)</b></td>
<td> </td>
<td> </td>
<td style="border-bottom: #000000 1px solid;" colspan="2" nowrap="nowrap" align="center"><b>Amount</b></td>
<td> </td>
<td> </td>
<td style="border-bottom: #000000 1px solid;" colspan="2" nowrap="nowrap" align="center"><b>(Numerator)</b></td>
<td> </td>
<td> </td>
<td style="border-bottom: #000000 1px solid;" colspan="2" nowrap="nowrap" align="center"><b>(Denominator)</b></td>
<td> </td>
<td> </td>
<td style="border-bottom: #000000 1px solid;" colspan="2" nowrap="nowrap" align="center"><b>Amount</b></td>
<td> </td></tr>
<tr style="font-size: 8pt;" valign="bottom"><td> </td>
<td> </td>
<td colspan="22" nowrap="nowrap" align="center"><b>(in thousands, except per share data)</b></td>
<td> </td></tr>
<tr style="background: #cceeff;" valign="bottom"><td>
<div style="text-indent: -15px; margin-left: 15px;"><b>Basic net income per common share:</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="text-indent: -15px; margin-left: 30px;">Net income</div></td>
<td> </td>
<td align="left">$</td>
<td align="right">96,758</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">169,692</td>
<td> </td>
<td> </td>
<td align="left">$</td>
<td align="right">0.57</td>
<td> </td>
<td> </td>
<td align="left">$</td>
<td align="right">48,462</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">166,817</td>
<td> </td>
<td> </td>
<td align="left">$</td>
<td align="right">0.29</td>
<td> </td></tr>
<tr style="background: #cceeff;" valign="bottom"><td>
<div style="text-indent: -15px; margin-left: 15px;"><b>Effect of dilutive securities:</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="text-indent: -15px; margin-left: 30px;">Stock options</div></td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">2,492</td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">3,167</td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td></tr>
<tr style="background: #cceeff;" valign="bottom"><td>
<div style="text-indent: -15px; margin-left: 30px;">Restricted stock</div></td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">350</td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">491</td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td></tr>
<tr valign="bottom"><td>
<div style="text-indent: -15px; margin-left: 30px;">Convertible notes, net of capitalized interest and taxes</div></td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td></tr>
<tr style="font-size: 1px;"><td>
<div style="text-indent: -15px; margin-left: 30px;"> </div></td>
<td> </td>
<td style="border-top: #000000 1px solid;" colspan="2" nowrap="nowrap" align="right"> </td>
<td> </td>
<td> </td>
<td style="border-top: #000000 1px solid;" colspan="2" nowrap="nowrap" align="right"> </td>
<td> </td>
<td> </td>
<td style="border-top: #000000 1px solid;" colspan="2" nowrap="nowrap" align="right"> </td>
<td> </td>
<td> </td>
<td style="border-top: #000000 1px solid;" colspan="2" nowrap="nowrap" align="right"> </td>
<td> </td>
<td> </td>
<td style="border-top: #000000 1px solid;" colspan="2" nowrap="nowrap" align="right"> </td>
<td> </td>
<td> </td>
<td style="border-top: #000000 1px solid;" colspan="2" nowrap="nowrap" align="right"> </td>
<td> </td></tr>
<tr style="background: #cceeff;" valign="bottom"><td nowrap="nowrap">
<div style="text-indent: -15px; margin-left: 15px;"><b>Diluted net income per common share:</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="text-indent: -15px; margin-left: 30px;">Net income on which diluted earnings per share is calculated</div></td>
<td> </td>
<td align="left">$</td>
<td align="right">96,758</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">172,534</td>
<td> </td>
<td> </td>
<td align="left">$</td>
<td align="right">0.56</td>
<td> </td>
<td> </td>
<td align="left">$</td>
<td align="right">48,462</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">170,475</td>
<td> </td>
<td> </td>
<td align="left">$</td>
<td align="right">0.28</td>
<td> </td></tr>
<tr style="font-size: 1px;"><td>
<div style="text-indent: -15px; margin-left: 30px;"> </div></td>
<td> </td>
<td style="border-top: #000000 3px double;" colspan="2" nowrap="nowrap" align="right"> </td>
<td> </td>
<td> </td>
<td style="border-top: #000000 3px double;" colspan="2" nowrap="nowrap" align="right"> </td>
<td> </td>
<td> </td>
<td style="border-top: #000000 3px double;" colspan="2" nowrap="nowrap" align="right"> </td>
<td> </td>
<td> </td>
<td style="border-top: #000000 3px double;" colspan="2" nowrap="nowrap" align="right"> </td>
<td> </td>
<td> </td>
<td style="border-top: #000000 3px double;" colspan="2" nowrap="nowrap" align="right"> </td>
<td> </td>
<td> </td>
<td style="border-top: #000000 3px double;" colspan="2" nowrap="nowrap" align="right"> </td>
<td> </td></tr></table></div>
<div style="margin-top: 6pt; font-size: 10pt;" align="left"> </div></div></div></div> </div>Net Income Per Common Share, Basic and Diluted. Basic net income per common share includes no dilution and is computed by dividing net income by the weightedfalsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringDiscloses the methodology and assumptions used to compute basic and diluted earnings (loss) per share for each class of common stock and participating security. Addresses all significant policy factors, including any antidilutive items that have been excluded from the computation and takes into account stock dividends, splits and reverse splits that occur after the balance sheet date of the latest reporting period but before the issuance of the financial statements.Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 128
-Paragraph 40
-Subparagraph a
Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 128
-Paragraph 6, 8-16, 60
falsefalse5false0nihd_ReclassificationsPolicyTextBlocknihdfalsenadurationReclassifications Policy [Text Block]falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00<div> <div><em><strong> </strong></em>
<div style="text-indent: 32px; font-family: 'Times New Roman', Times; background: none transparent scroll repeat 0% 0%; color: #000000; margin-left: 0%; font-size: 10pt; margin-right: 0%;" align="left"><em><strong>Reclassifications.</strong></em> We have reclassified some prior period amounts in our condensed consolidated financial statements to conform to our current year presentation.</div>
<div style="margin-top: 6pt; font-size: 1pt;"><em><strong> </strong></em> </div><em><strong> </strong></em></div> </div>Reclassifications. We have reclassified some prior period amounts in our condensed consolidated financial statements to conform to our current yearfalsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringReclassifications Policy [Text Block]No authoritative reference available.falsefalse14Basis of Presentation (Policy)UnKnownUnKnownUnKnownUnKnownfalsetrue