8. Debt

Long-term Debt and Capital and Financing Lease Obligations

Long-term debt and capital and financing lease obligations consist of the following (dollars in thousands):

	June 30, 2016		December 31, 2015
Mortgage notes payable due 2017 through 2047; weighted average interest rate of 4.58% for the six months ended June 30, 2016, including net debt premium and deferred financing costs of $0.3 million and $3.3 million at June 30, 2016 and December 31, 2015, respectively (weighted average interest rate of 4.51% in 2015)	$	3,307,932	$	3,246,513
Capital and financing lease obligations payable through 2031; weighted average interest rate of 8.07% for the six months ended June 30, 2016 (weighted average interest rate of 8.11% in 2015)		2,492,546		2,489,588
Convertible notes payable in aggregate principal amount of $316.3 million, less debt discount and deferred financing costs of $27.7 million and $34.3 million at June 30, 2016 and December 31, 2015, respectively, interest at 2.75% per annum, due June 2018		288,534		281,902
Construction financing due 2019 through 2032; weighted average interest rate of 7.76% for the six months ended June 30, 2016 (weighted average interest rate of 4.84% in 2015)		21,809		24,105
Notes payable issued to finance insurance premiums, weighted average interest rate of 2.94% for the six months ended June 30, 2016, due 2016		11,089		—
Other notes payable, weighted average interest rate of 5.26% for the six months ended June 30, 2016 (weighted average interest rate of 5.16% in 2015) and maturity dates ranging from 2016 to 2020		79,292		80,305
Total debt and capital and financing lease obligations		6,201,202		6,122,413
Less current portion		332,551		235,604
Total long-term debt and capital and financing lease obligations	$	5,868,651	$	5,886,809

Credit Facilities

On December 19, 2014, the Company entered into a Fourth Amended and Restated Credit Agreement with General Electric Capital Corporation, as administrative agent, lender and swingline lender, and the other lenders from time to time parties thereto. The agreement provides for a total commitment amount of $500.0 million, comprised of a $100.0 million term loan drawn at closing and a $400.0 million revolving credit facility (with a $50.0 million sublimit for letters of credit and a $50.0 million swingline feature to permit same day borrowing) and an option to increase the revolving credit facility by an additional $250.0 million, subject to obtaining commitments for the amount of such increase from acceptable lenders. The maturity date is January 3, 2020, and amounts drawn under the facility bear interest at 90-day LIBOR plus an applicable margin from a range of 2.50% to 3.50%. The applicable margin varies based on the percentage of the total commitment drawn, with a 2.50% margin at utilization equal to or lower than 35%, a 3.25% margin at utilization greater than 35% but less than or equal to 50%, and a 3.50% margin at utilization greater than 50%. The quarterly commitment fee on the unused portion of the facility is 0.25% per annum when the outstanding amount of obligations (including revolving credit, swingline and term loans and letter of credit obligations) is greater than or equal to 50% of the total commitment amount or 0.35% per annum when such outstanding amount is less than 50% of the total commitment amount.

Amounts drawn on the facility may be used to finance acquisitions, fund working capital and capital expenditures and for other general corporate purposes.

The facility is secured by a first priority mortgage on certain of the Company's communities. In addition, the agreement permits the Company to pledge the equity interests in subsidiaries that own other communities (rather than mortgaging such communities), provided that loan availability from pledged assets cannot exceed 10% of loan availability from mortgaged assets. The availability under the line will vary from time to time as it is based on borrowing base calculations related to the appraised value and performance of the communities securing the facility.

The agreement contains typical affirmative and negative covenants, including financial covenants with respect to minimum consolidated fixed charge coverage and minimum consolidated tangible net worth. A violation of any of these covenants could result in a default under the credit agreement, which would result in termination of all commitments under the agreement and all amounts owing under the agreement and certain other loan agreements becoming immediately due and payable and/or trigger cross default provisions in our other outstanding debt and lease agreements.

As of June 30, 2016, the outstanding balance under this credit facility was $186.5 million. Additionally, there were $22.0 million of letters of credit outstanding under this credit facility. In addition to the sublimit for letters of credit on this credit facility, the Company also had separate secured and unsecured letter of credit facilities of up to $64.5 million in the aggregate as of June 30, 2016. Letters of credit totaling $64.4 million had been issued under these separate facilities as of that date.

2016 Financings

In March 2016, the Company obtained a $100.0 million supplemental loan, secured by first mortgages on ten communities. The loan bears interest at a fixed rate of 4.20% and matures on January 1, 2023. Proceeds from the loan were utilized to pay down the outstanding balance of the credit facility.

As of June 30, 2016, the Company is in compliance with the financial covenants of its outstanding debt and lease agreements.