Indebtedness	3 Months Ended
Mar. 31, 2015
Indebtedness
Indebtedness	Note 5. Indebtedness Our principal debt obligations at March 31, 2015 were: (1) six public issuances of senior unsecured notes, including: (a) $250,000 principal amount at an annual interest rate of 4.30% due 2016, (b) $400,000 principal amount at an annual interest rate of 3.25% due 2019, (c) $200,000 principal amount at an annual interest rate of 6.75% due 2020, (d) $300,000 principal amount at an annual interest rate of 6.75% due 2021, (e) $250,000 principal amount at an annual interest rate of 4.75% due 2024 and (f) $350,000 principal amount at an annual interest rate of 5.625% due 2042; (2) our $350,000 principal amount term loan; and (3) $609,032 aggregate principal amount of mortgages secured by 46 of our properties (48 buildings) with maturity dates from 2015 to 2043. The 46 mortgaged properties (48 buildings) had a carrying value of $776,980 at March 31, 2015. We also had two properties subject to capital leases totaling $12,621 at March 31, 2015; these two properties had a carrying value of $18,095 at March 31, 2015. The capital leases expire in 2026. We have a $750,000 unsecured revolving credit facility that is available for general business purposes, including acquisitions. The maturity date of our revolving credit facility is January 15, 2018 and, subject to the payment of an extension fee and meeting certain other conditions, we have an option to further extend the stated maturity date by an additional one year to January 15, 2019. The revolving credit facility agreement provides that we can borrow, repay and reborrow funds available under the revolving credit facility agreement until maturity, and no principal repayment is due until maturity. The revolving credit facility agreement includes a feature under which maximum borrowings under the facility may be increased to up to $1,500,000 in certain circumstances. The interest rate paid on borrowings under the revolving credit facility agreement is LIBOR plus a premium of 130 basis points, and the facility fee is 30 basis points per annum on the total amount of lending commitments. Both the interest rate premium and the facility fee are subject to adjustment based upon changes to our credit ratings. As of March 31, 2015, the interest rate payable on borrowings under our revolving credit facility was 1.47%, and the weighted average interest rate for borrowings under our revolving credit facility was 1.54% and 1.42% for the three months ended March 31, 2015 and 2014, respectively. As of March 31, 2015, we had no amounts outstanding and $750,000 available for borrowing by us, and as of May 5, 2015, we had $550,000 outstanding and $200,000 available for borrowing by us under our revolving credit facility. In 2014, we entered into a term loan agreement pursuant to which we obtained a $350,000 unsecured term loan. Our term loan matures on January 15, 2020, and is prepayable without penalty at any time. In addition, our term loan includes a feature under which maximum borrowings may be increased to up to $700,000 in certain circumstances. Our term loan bears interest at a rate of LIBOR plus a premium of 140 basis points that is subject to adjustment based upon changes to our credit ratings. As of March 31, 2015, the interest rate payable for amounts outstanding under our term loan was 1.57%. The weighted average annual interest rate for amounts outstanding on our term loan was 1.59% for the three months ended March 31, 2015. Our revolving credit facility and term loan agreements provide for the acceleration of payment of all amounts outstanding upon the occurrence and continuation of certain events of default, including a change of control of us, which includes Reit Management & Research LLC, or RMR, ceasing to act as our business manager and property manager. In December 2014, we entered an agreement to acquire the 38 senior living communities discussed in Note 3 above. Simultaneous with entering this agreement, we received a bridge loan commitment for $700,000. In February 2015, we terminated the bridge loan commitment and we recognized a loss of $1,409 on extinguishment of debt in the first quarter of 2015 in connection with that termination. We acquired 37 of these 38 senior living communities in May 2015 and financed the acquisition using cash on hand, borrowings under our revolving credit facility and the assumption of approximately $139,181 of mortgage debt with a weighted average interest rate of 4.59%. Our public debt indenture and its related supplements and our credit facility and term loan agreements contain a number of financial and other covenants, including covenants that restrict our ability to incur indebtedness or to make distributions under certain circumstances and require us to maintain financial ratios. We believe we were in compliance with the terms and conditions of our public debt indenture and its supplements and our credit facility and term loan agreements at March 31, 2015. In connection with two of the properties acquired in January 2015, discussed in Note 3 above, we assumed $29,955 of mortgage debt, which we recorded at their aggregate fair value of $31,029. These two assumed mortgage notes have a contractual weighted average interest rate of 4.73% and mature in July 2016 and October 2022. We determined the fair value of the assumed mortgage notes using a market approach based upon Level 3 inputs (significant other unobservable inputs) in the fair value hierarchy. In February 2015, we repaid a mortgage note that encumbered one of our properties that had a principal balance of $29,227 and an interest rate of 6.02%. In April 2015, we prepaid a mortgage note that encumbered one of our properties that had a principal balance of $6,274 and an interest rate of 5.81%.

Note 5. Indebtedness

Our principal debt obligations at March 31, 2015 were: (1) six public issuances of senior unsecured notes, including: (a) $250,000 principal amount at an annual interest rate of 4.30% due 2016, (b) $400,000 principal amount at an annual interest rate of 3.25% due 2019, (c) $200,000 principal amount at an annual interest rate of 6.75% due 2020, (d) $300,000 principal amount at an annual interest rate of 6.75% due 2021, (e) $250,000 principal amount at an annual interest rate of 4.75% due 2024 and (f) $350,000 principal amount at an annual interest rate of 5.625% due 2042; (2) our $350,000 principal amount term loan; and (3) $609,032 aggregate principal amount of mortgages secured by 46 of our properties (48 buildings) with maturity dates from 2015 to 2043. The 46 mortgaged properties (48 buildings) had a carrying value of $776,980 at March 31, 2015. We also had two properties subject to capital leases totaling $12,621 at March 31, 2015; these two properties had a carrying value of $18,095 at March 31, 2015. The capital leases expire in 2026.

We have a $750,000 unsecured revolving credit facility that is available for general business purposes, including acquisitions. The maturity date of our revolving credit facility is January 15, 2018 and, subject to the payment of an extension fee and meeting certain other conditions, we have an option to further extend the stated maturity date by an additional one year to January 15, 2019. The revolving credit facility agreement provides that we can borrow, repay and reborrow funds available under the revolving credit facility agreement until maturity, and no principal repayment is due until maturity. The revolving credit facility agreement includes a feature under which maximum borrowings under the facility may be increased to up to $1,500,000 in certain circumstances. The interest rate paid on borrowings under the revolving credit facility agreement is LIBOR plus a premium of 130 basis points, and the facility fee is 30 basis points per annum on the total amount of lending commitments. Both the interest rate premium and the facility fee are subject to adjustment based upon changes to our credit ratings. As of March 31, 2015, the interest rate payable on borrowings under our revolving credit facility was 1.47%, and the weighted average interest rate for borrowings under our revolving credit facility was 1.54% and 1.42% for the three months ended March 31, 2015 and 2014, respectively. As of March 31, 2015, we had no amounts outstanding and $750,000 available for borrowing by us, and as of May 5, 2015, we had $550,000 outstanding and $200,000 available for borrowing by us under our revolving credit facility.

In 2014, we entered into a term loan agreement pursuant to which we obtained a $350,000 unsecured term loan. Our term loan matures on January 15, 2020, and is prepayable without penalty at any time. In addition, our term loan includes a feature under which maximum borrowings may be increased to up to $700,000 in certain circumstances. Our term loan bears interest at a rate of LIBOR plus a premium of 140 basis points that is subject to adjustment based upon changes to our credit ratings. As of March 31, 2015, the interest rate payable for amounts outstanding under our term loan was 1.57%. The weighted average annual interest rate for amounts outstanding on our term loan was 1.59% for the three months ended March 31, 2015.

Our revolving credit facility and term loan agreements provide for the acceleration of payment of all amounts outstanding upon the occurrence and continuation of certain events of default, including a change of control of us, which includes Reit Management & Research LLC, or RMR, ceasing to act as our business manager and property manager.

In December 2014, we entered an agreement to acquire the 38 senior living communities discussed in Note 3 above. Simultaneous with entering this agreement, we received a bridge loan commitment for $700,000. In February 2015, we terminated the bridge loan commitment and we recognized a loss of $1,409 on extinguishment of debt in the first quarter of 2015 in connection with that termination. We acquired 37 of these 38 senior living communities in May 2015 and financed the acquisition using cash on hand, borrowings under our revolving credit facility and the assumption of approximately $139,181 of mortgage debt with a weighted average interest rate of 4.59%.

Our public debt indenture and its related supplements and our credit facility and term loan agreements contain a number of financial and other covenants, including covenants that restrict our ability to incur indebtedness or to make distributions under certain circumstances and require us to maintain financial ratios. We believe we were in compliance with the terms and conditions of our public debt indenture and its supplements and our credit facility and term loan agreements at March 31, 2015.

In connection with two of the properties acquired in January 2015, discussed in Note 3 above, we assumed $29,955 of mortgage debt, which we recorded at their aggregate fair value of $31,029. These two assumed mortgage notes have a contractual weighted average interest rate of 4.73% and mature in July 2016 and October 2022. We determined the fair value of the assumed mortgage notes using a market approach based upon Level 3 inputs (significant other unobservable inputs) in the fair value hierarchy.

In February 2015, we repaid a mortgage note that encumbered one of our properties that had a principal balance of $29,227 and an interest rate of 6.02%.

In April 2015, we prepaid a mortgage note that encumbered one of our properties that had a principal balance of $6,274 and an interest rate of 5.81%.