CONCENTRATION OF CREDIT RISK	3 Months Ended
Mar. 31, 2013
Risks and Uncertainties [Abstract]
CONCENTRATION OF CREDIT RISK	CONCENTRATION OF CREDIT RISK As of March 31, 2013, Atria, Sunrise, Brookdale Senior Living and Kindred managed or operated approximately 18.0%, 14.8%, 10.5% and 4.0%, respectively, of our real estate investments based on their gross book value (excluding properties classified as held for sale as of March 31, 2013). Seniors housing communities constituted approximately 61.5% of our real estate portfolio based on gross book value as of March 31, 2013, and skilled nursing and other facilities, MOBs and hospitals collectively comprised the remaining 38.5% (excluding properties classified as held for sale as of March 31, 2013). Our properties were located in 46 states, the District of Columbia and two Canadian provinces as of March 31, 2013, with properties in two states (California and New York) accounting for more than 10% of our total revenues and properties in one state (California) accounting for more than 10% of our total net operating income (“NOI,” which is defined as total revenues, excluding interest and other income, less property-level operating expenses and medical office building services costs) (in each case excluding amounts in discontinued operations) for the three months then ended. Triple-Net Leased Properties For the three months ended March 31, 2013 and 2012, approximately 9.3% and 11.1%, respectively, of our total revenues and 15.4% and 18.1%, respectively, of our total NOI (in each case excluding amounts in discontinued operations) were derived from our lease agreements with Kindred. For the same periods, approximately 5.8% and 7.0%, respectively, of our total revenues and 9.5% and 11.4%, respectively, of our total NOI (in each case excluding amounts in discontinued operations) were derived from our lease agreements with Brookdale Senior Living. Each of the Kindred Master Leases and our leases with Brookdale Senior Living is a triple-net lease that obligates the tenant to pay all property-related expenses, including maintenance, utilities, repairs, taxes, insurance and capital expenditures, and to comply with the terms of the mortgage financing documents, if any, affecting the properties. In addition, each of these leases has guaranty and cross-default provisions tied to other leases with the same tenant, as well as bundled lease renewals. Because the properties we lease to Kindred and Brookdale Senior Living account for a significant portion of our total revenues and NOI, our financial condition and results of operations could be weakened and our ability to service our indebtedness and to make distributions to our stockholders could be limited if either Kindred or Brookdale Senior Living becomes unable or unwilling to satisfy its obligations to us or to renew its leases with us upon expiration of the terms thereof. We cannot assure you that either Kindred or Brookdale Senior Living will have sufficient assets, income and access to financing to enable it to satisfy its respective obligations to us, and any inability or unwillingness by Kindred or Brookdale Senior Living to do so could have a material adverse effect on our business, financial condition, results of operations and liquidity, our ability to service our indebtedness and other obligations and our ability to make distributions to our stockholders, as required for us to continue to qualify as a REIT (a “Material Adverse Effect”). We also cannot assure you that either Kindred or Brookdale Senior Living will elect to renew its respective leases with us upon expiration of their terms or that we will be able to reposition any properties that are not renewed on a timely basis or on the same or better economic terms, if at all. Senior Living Operations As of March 31, 2013, Atria and Sunrise, collectively, provided comprehensive property management and accounting services with respect to 220 of our seniors housing communities, for which we pay annual management fees pursuant to long-term management agreements. Because Atria and Sunrise manage, but do not lease, our properties, we are not directly exposed to their credit risk in the same manner or to the same extent as our triple-net tenants. However, we rely on our managers’ personnel, expertise, technical resources and information systems, proprietary information, good faith and judgment to manage our seniors housing communities efficiently and effectively. We also rely on our managers to set resident fees and otherwise operate those properties in compliance with the terms of our management agreements. Although we have various rights as the property owner under our management agreements, including various rights to terminate and exercise remedies under the agreements as provided therein, Atria’s or Sunrise’s inability or unwillingness to satisfy its obligations under those agreements, to efficiently and effectively manage our properties or to provide timely and accurate accounting information with respect thereto could have a Material Adverse Effect on us. In addition, significant changes in Atria’s or Sunrise’s senior management or any adverse developments in their businesses and affairs or financial condition could have a Material Adverse Effect on us. Our 34% ownership interest in Atria entitles us to certain rights and minority protections regarding material transactions affecting Atria, as well as the right to appoint two directors to the Atria Board of Directors. Kindred, Brookdale Senior Living, Atria and Sunrise Information Each of Kindred and Brookdale Senior Living is subject to the reporting requirements of the SEC and is required to file with the SEC annual reports containing audited financial information and quarterly reports containing unaudited financial information. The information related to Kindred and Brookdale Senior Living contained or referred to in this Quarterly Report on Form 10-Q has been derived from SEC filings made by Kindred or Brookdale Senior Living, as the case may be, or other publicly available information, or was provided to us by Kindred or Brookdale Senior Living, and we have not verified this information through an independent investigation or otherwise. We have no reason to believe that this information is inaccurate in any material respect, but we cannot provide any assurance of its accuracy. We are providing this data for informational purposes only, and you are encouraged to obtain Kindred’s and Brookdale Senior Living’s publicly available filings, which can be found on the SEC’s website at www.sec.gov. Neither Atria nor Sunrise is currently subject to the reporting requirements of the SEC. The information related to Atria and Sunrise contained or referred to within this Quarterly Report on Form 10-Q has been derived from publicly available information or was provided to us by Atria or Sunrise, as the case may be, and we have not verified this information through an independent investigation or otherwise. We have no reason to believe that this information is inaccurate in any material respect, but we cannot provide any assurance of its accuracy.

CONCENTRATION OF CREDIT RISK

As of March 31, 2013, Atria, Sunrise, Brookdale Senior Living and Kindred managed or operated approximately 18.0%, 14.8%, 10.5% and 4.0%, respectively, of our real estate investments based on their gross book value (excluding properties classified as held for sale as of March 31, 2013). Seniors housing communities constituted approximately 61.5% of our real estate portfolio based on gross book value as of March 31, 2013, and skilled nursing and other facilities, MOBs and hospitals collectively comprised the remaining 38.5% (excluding properties classified as held for sale as of March 31, 2013). Our properties were located in 46 states, the District of Columbia and two Canadian provinces as of March 31, 2013, with properties in two states (California and New York) accounting for more than 10% of our total revenues and properties in one state (California) accounting for more than 10% of our total net operating income (“NOI,” which is defined as total revenues, excluding interest and other income, less property-level operating expenses and medical office building services costs) (in each case excluding amounts in discontinued operations) for the three months then ended.

Triple-Net Leased Properties

For the three months ended March 31, 2013 and 2012, approximately 9.3% and 11.1%, respectively, of our total revenues and 15.4% and 18.1%, respectively, of our total NOI (in each case excluding amounts in discontinued operations) were derived from our lease agreements with Kindred. For the same periods, approximately 5.8% and 7.0%, respectively, of our total revenues and 9.5% and 11.4%, respectively, of our total NOI (in each case excluding amounts in discontinued operations) were derived from our lease agreements with Brookdale Senior Living. Each of the Kindred Master Leases and our leases with Brookdale Senior Living is a triple-net lease that obligates the tenant to pay all property-related expenses, including maintenance, utilities, repairs, taxes, insurance and capital expenditures, and to comply with the terms of the mortgage financing documents, if any, affecting the properties. In addition, each of these leases has guaranty and cross-default provisions tied to other leases with the same tenant, as well as bundled lease renewals.

Because the properties we lease to Kindred and Brookdale Senior Living account for a significant portion of our total revenues and NOI, our financial condition and results of operations could be weakened and our ability to service our indebtedness and to make distributions to our stockholders could be limited if either Kindred or Brookdale Senior Living becomes unable or unwilling to satisfy its obligations to us or to renew its leases with us upon expiration of the terms thereof. We cannot assure you that either Kindred or Brookdale Senior Living will have sufficient assets, income and access to financing to enable it to satisfy its respective obligations to us, and any inability or unwillingness by Kindred or Brookdale Senior Living to do so could have a material adverse effect on our business, financial condition, results of operations and liquidity, our ability to service our indebtedness and other obligations and our ability to make distributions to our stockholders, as required for us to continue to qualify as a REIT (a “Material Adverse Effect”). We also cannot assure you that either Kindred or Brookdale Senior Living will elect to renew its respective leases with us upon expiration of their terms or that we will be able to reposition any properties that are not renewed on a timely basis or on the same or better economic terms, if at all.

Senior Living Operations

As of March 31, 2013, Atria and Sunrise, collectively, provided comprehensive property management and accounting services with respect to 220 of our seniors housing communities, for which we pay annual management fees pursuant to long-term management agreements.

Because Atria and Sunrise manage, but do not lease, our properties, we are not directly exposed to their credit risk in the same manner or to the same extent as our triple-net tenants. However, we rely on our managers’ personnel, expertise, technical resources and information systems, proprietary information, good faith and judgment to manage our seniors housing communities efficiently and effectively. We also rely on our managers to set resident fees and otherwise operate those properties in compliance with the terms of our management agreements. Although we have various rights as the property owner under our management agreements, including various rights to terminate and exercise remedies under the agreements as provided therein, Atria’s or Sunrise’s inability or unwillingness to satisfy its obligations under those agreements, to efficiently and effectively manage our properties or to provide timely and accurate accounting information with respect thereto could have a Material Adverse Effect on us. In addition, significant changes in Atria’s or Sunrise’s senior management or any adverse developments in their businesses and affairs or financial condition could have a Material Adverse Effect on us.

Our 34% ownership interest in Atria entitles us to certain rights and minority protections regarding material transactions affecting Atria, as well as the right to appoint two directors to the Atria Board of Directors.

Kindred, Brookdale Senior Living, Atria and Sunrise Information

Each of Kindred and Brookdale Senior Living is subject to the reporting requirements of the SEC and is required to file with the SEC annual reports containing audited financial information and quarterly reports containing unaudited financial information. The information related to Kindred and Brookdale Senior Living contained or referred to in this Quarterly Report on Form 10-Q has been derived from SEC filings made by Kindred or Brookdale Senior Living, as the case may be, or other publicly available information, or was provided to us by Kindred or Brookdale Senior Living, and we have not verified this information through an independent investigation or otherwise. We have no reason to believe that this information is inaccurate in any material respect, but we cannot provide any assurance of its accuracy. We are providing this data for informational purposes only, and you are encouraged to obtain Kindred’s and Brookdale Senior Living’s publicly available filings, which can be found on the SEC’s website at www.sec.gov.

Neither Atria nor Sunrise is currently subject to the reporting requirements of the SEC. The information related to Atria and Sunrise contained or referred to within this Quarterly Report on Form 10-Q has been derived from publicly available information or was provided to us by Atria or Sunrise, as the case may be, and we have not verified this information through an independent investigation or otherwise. We have no reason to believe that this information is inaccurate in any material respect, but we cannot provide any assurance of its accuracy.