2.2.0.25falsefalse0210 - Disclosure - Debttruefalsefalse1falsefalseUSDfalsefalse1/1/2011 - 3/31/2011 USD ($) / shares USD ($) $Jan-01-2011_Mar-31-2011http://www.sec.gov/CIK0000780053duration2011-01-01T00:00:002011-03-31T00:00:00USDEPSDividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli0USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170SharesStandardhttp://www.xbrl.org/2003/instancesharesxbrli0USDUSD$2true0nhp_DebtAbstractnhpfalsenadurationDebt Abstract.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringDebt Abstract.falsefalseDebt [Abstract]3false0us-gaap_DebtDisclosureTextBlockus-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>10. Debt</b> </div> <div align="justify" style="font-size: 10pt; margin-top: 10pt; text-indent: 4%"><i>Unsecured Senior Credit Facility</i> </div> <div align="justify" style="font-size: 10pt; margin-top: 10pt; text-indent: 8%">As of March 31, 2011 and December 31, 2010, we had $245.0 million and $175.0 million, respectively, outstanding on our $700.0 million revolving unsecured senior credit facility. At our option, borrowings under the credit facility bear interest at the prime rate (3.25% at March 31, 2011) or applicable LIBOR plus 0.70% (0.95% at March 31, 2011). We pay a facility fee of 0.15% per annum on the total commitment under the agreement. The credit facility matures on December 15, 2011. As of March 31, 2011, we were in compliance with all covenants under the credit facility. </div> <div align="justify" style="font-size: 10pt; margin-top: 10pt; text-indent: 4%"><i>Senior Notes</i> </div> <div align="justify" style="font-size: 10pt; margin-top: 10pt; text-indent: 8%">The aggregate principal amount of notes outstanding at each of March 31, 2011 and December 31, 2010 was $991.6 million, and the weighted average interest rate on the notes was 6.47%. The weighted average maturity was 3.7 years and 4.0 years as of March 31, 2011 and December 31, 2010, respectively. </div> <div align="justify" style="font-size: 10pt; margin-top: 10pt; text-indent: 4%"><i>Notes and Bonds Payable</i> </div> <div align="justify" style="font-size: 10pt; margin-top: 10pt; text-indent: 8%">The aggregate principal amount of notes and bonds payable at March 31, 2011 was $365.2 million. Notes and bonds payable are due through the year 2036, at interest rates ranging from 0.83% to 8.63% and are secured by real estate properties with an aggregate net book value as of March 31, 2011 of $527.6 million. As of March 31, 2011, the weighted average interest rate on the notes and bonds payable was 5.53% and the weighted average maturity was 7.0 years. As of December 31, 2010, the aggregate amount of notes and bonds payable was $362.6 million, and the notes and bonds payable had a weighted average interest rate of 5.59% and a weighted average maturity of 7.2 years. </div> <div align="justify" style="font-size: 10pt; margin-top: 10pt; text-indent: 8%">During the three months ended March 31, 2011, our consolidated joint venture which owns a development project obtained a $36.5 million construction loan under which $4.2 million has been drawn and remains outstanding at March 31, 2011. </div>   </div>  <div style="font-family: 'Times New Roman',Times,serif; margin-left: 0in; "> <div align="center" style="font-size: 10pt; margin-top: 0pt"> <b> </b> </div> <div align="center" style="font-size: 10pt; margin-top: 0pt"> <b> </b> </div> <div align="justify" style="font-size: 10pt; margin-top: 10pt; text-indent: 4%"><i>Debt Maturities</i> </div> <div align="justify" style="font-size: 10pt; margin-top: 10pt; text-indent: 8%">The principal balances of our debt as of March 31, 2011 mature as follows: </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="44%"> </td> <td width="3%"> </td> <td width="1%"> </td> <td width="9%"> </td> <td width="1%"> </td> <td width="3%"> </td> <td width="1%"> </td> <td width="9%"> </td> <td width="1%"> </td> <td width="3%"> </td> <td width="1%"> </td> <td width="9%"> </td> <td width="1%"> </td> <td width="3%"> </td> <td width="1%"> </td> <td width="9%"> </td> <td width="1%"> </td> </tr> <tr style="font-size: 10pt" valign="bottom"> <td> </td> <td> </td> <td nowrap="nowrap" align="center" colspan="2"><b>Credit</b></td> <td> </td> <td> </td> <td nowrap="nowrap" align="center" colspan="2"><b>Senior</b></td> <td> </td> <td> </td> <td nowrap="nowrap" align="center" colspan="2"><b>Notes and Bonds</b></td> <td> </td> <td> </td> <td nowrap="nowrap" align="center" colspan="2"> </td> <td> </td> </tr> <tr style="font-size: 10pt" valign="bottom"> <td nowrap="nowrap" align="left" style="border-bottom: 1px solid #000000"><b>Year</b></td> <td> </td> <td nowrap="nowrap" align="center" colspan="2" style="border-bottom: 1px solid #000000"><b>Facility</b></td> <td> </td> <td> </td> <td nowrap="nowrap" align="center" colspan="2" style="border-bottom: 1px solid #000000"><b>Notes</b></td> <td> </td> <td> </td> <td nowrap="nowrap" align="center" colspan="2" style="border-bottom: 1px solid #000000"><b>Payable</b></td> <td> </td> <td> </td> <td nowrap="nowrap" align="center" colspan="2" style="border-bottom: 1px solid #000000"><b>Total</b></td> <td> </td> </tr> <tr style="font-size: 10pt" valign="bottom"> <td> </td> <td> </td> <td nowrap="nowrap" align="center" colspan="14"><b>(In thousands)</b></td> <td> </td> </tr>   <tr valign="bottom" style="background: #cceeff"> <td> <div style="margin-left:15px; text-indent:-15px">2011 </div></td> <td> </td> <td align="left">$</td> <td align="right">245,000</td> <td> </td> <td> </td> <td align="left">$</td> <td align="right">339,040</td> <td> </td> <td> </td> <td align="left">$</td> <td align="right">—</td> <td> </td> <td> </td> <td align="left">$</td> <td align="right">584,040</td> <td> </td> </tr> <tr valign="bottom"> <td> <div style="margin-left:15px; text-indent:-15px">2012 </div></td> <td> </td> <td> </td> <td align="right">—</td> <td> </td> <td> </td> <td> </td> <td align="right">72,950</td> <td> </td> <td> </td> <td> </td> <td align="right">38,128</td> <td> </td> <td> </td> <td> </td> <td align="right">111,078</td> <td> </td> </tr> <tr valign="bottom" style="background: #cceeff"> <td> <div style="margin-left:15px; text-indent:-15px">2013 </div></td> <td> </td> <td> </td> <td align="right">—</td> <td> </td> <td> </td> <td> </td> <td align="right">269,850</td> <td> </td> <td> </td> <td> </td> <td align="right">41,961</td> <td> </td> <td> </td> <td> </td> <td align="right">311,811</td> <td> </td> </tr> <tr valign="bottom"> <td> <div style="margin-left:15px; text-indent:-15px">2014 </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 align="right">37,383</td> <td> </td> <td> </td> <td> </td> <td align="right">37,383</td> <td> </td> </tr> <tr valign="bottom" style="background: #cceeff"> <td> <div style="margin-left:15px; text-indent:-15px">2015 </div></td> <td> </td> <td> </td> <td align="right">—</td> <td> </td> <td> </td> <td> </td> <td align="right">234,420</td> <td> </td> <td> </td> <td> </td> <td align="right">35,115</td> <td> </td> <td> </td> <td> </td> <td align="right">269,535</td> <td> </td> </tr> <tr valign="bottom"> <td> <div style="margin-left:15px; text-indent:-15px">Thereafter (1) </div></td> <td> </td> <td> </td> <td align="right">—</td> <td> </td> <td> </td> <td> </td> <td align="right">75,373</td> <td> </td> <td> </td> <td> </td> <td align="right">212,577</td> <td> </td> <td> </td> <td> </td> <td align="right">287,950</td> <td> </td> </tr> <tr style="font-size: 1px"> <td> <div style="margin-left:15px; text-indent:-15px">  </div></td> <td> </td> <td nowrap="nowrap" colspan="2" align="right" style="border-top: 1px solid #000000"> </td> <td> </td> <td> </td> <td nowrap="nowrap" colspan="2" align="right" style="border-top: 1px solid #000000"> </td> <td> </td> <td> </td> <td nowrap="nowrap" colspan="2" align="right" style="border-top: 1px solid #000000"> </td> <td> </td> <td> </td> <td nowrap="nowrap" colspan="2" align="right" style="border-top: 1px solid #000000"> </td> <td> </td> </tr> <tr valign="bottom" style="background: #cceeff"> <td> <div style="margin-left:15px; text-indent:-15px">  </div></td> <td> </td> <td align="left">$</td> <td align="right">245,000</td> <td> </td> <td> </td> <td align="left">$</td> <td align="right">991,633</td> <td> </td> <td> </td> <td align="left">$</td> <td align="right">365,164</td> <td> </td> <td> </td> <td align="left">$</td> <td align="right">1,601,797</td> <td> </td> </tr> <tr style="font-size: 1px"> <td> <div style="margin-left:15px; text-indent:-15px">  </div></td> <td> </td> <td nowrap="nowrap" colspan="2" align="right" style="border-top: 3px double #000000"> </td> <td> </td> <td> </td> <td nowrap="nowrap" colspan="2" align="right" style="border-top: 3px double #000000"> </td> <td> </td> <td> </td> <td nowrap="nowrap" colspan="2" align="right" style="border-top: 3px double #000000"> </td> <td> </td> <td> </td> <td nowrap="nowrap" colspan="2" align="right" style="border-top: 3px double #000000"> </td> <td> </td> </tr>  </table> </div> <table width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt; text-align: left"> <tr style="font-size: 6pt"> <td width="3%"> </td> <td width="1%"> </td> <td width="96%"> </td> </tr> <tr valign="top"> <td nowrap="nowrap" align="left">(1)</td> <td> </td> <td> <div style="text-align: justify">There are $52.4 million of senior notes due in 2037 which may be put back to us at their face amount at the option of the holder on October 1 of any of the following years: 2012, 2017 or 2027. There are $23.0 million of senior notes due in 2038 which may be put back to us at their face amount at the option of the holder on July 7 of any of the following years: 2013, 2018, 2023 or 2028. </div></td> </tr> </table> </div>  <!-- Begin Block Tagged NotefalsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringInformation about short-term and long-term debt arrangements, which includes amounts of borrowings under each line of credit, note payable, commercial paper issue, bonds indenture, debenture issue, and any other contractual agreement to repay funds, and about the underlying arrangements, rationale for a classification as long-term, including repayment terms, interest rates, collateral provided, restrictions on use of assets and activities, whether or not in compliance with debt covenants, and other matters important to users of the financial statements, such as the effects of refinancing and noncompliance with debt covenants.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 20, 22 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 129 -Paragraph 2, 4 falsefalseDebt12DebtUnKnownUnKnownUnKnownUnKnownfalsetrue