DEBT

Debt consists of the following (in thousands):



	March 31, 2014		December 31, 2013
Convertible senior notes - unsecured (net of discount of $7,747)	$	192,253	$	—
Revolving credit facility - unsecured	107,000		167,000
Bank term loans - unsecured	250,000		370,000
Fannie Mae term loans - secured (including a premium of $1,732)	79,780		80,080
	$	629,033	$	617,080

In March 2014 we issued $200,000,000 of 3.25% senior unsecured convertible notes due April 2021 (the "Notes"). Interest is payable April 1st and October 1st of each year. The Notes are convertible at an initial conversion rate of 13.926 shares of common stock per $1,000 principal amount, representing a conversion price of approximately $71.81 per share for a total of approximately 2,785,200 underlying shares. The conversion rate is subject to adjustment upon the occurrence of certain events, as defined in the indenture governing the Notes, but will not be adjusted for any accrued and unpaid interest except in limited circumstances. Upon conversion, NHI's conversion obligation may be satisfied, at our option, in cash, shares of common stock or a combination of cash and shares of common stock. Because the conversion price is in excess of the average stock price for the quarter, the impact of the conversion option is currently anti-dilutive to the earnings per share calculation and as such has no effect on our earnings per share.

The Notes are split into a debt component and an equity component since they may be settled in cash upon conversion. The value of the debt component is based upon the estimated fair value of a similar debt instrument without the conversion feature at the time of issuance and was estimated to be approximately $192,238,000. The $7,762,000 difference between the contractual principal on the debt and the value allocated to the debt was recorded as an equity component and represents the estimated value of the conversion feature of the instrument. The excess of the contractual principal amount of the debt over its estimated fair value, the original issue discount, is amortized to interest expense using the effective interest method over the term of the Notes. The effective interest rate used to amortize the debt discount and the liability component of the debt issue costs was approximately 3.9% based on our estimated non-convertible borrowing rate at the date the Notes were issued.

The total cost of issuing the Notes was $5,969,000, of which $5,706,000 was allocated to the debt component and $263,000 to the equity component.

On March 27, 2014, we entered into an amended $700,000,000 senior unsecured credit facility. The facility can be expanded, subject to certain conditions, up to an additional $130,000,000. At closing, the new facility amended a smaller credit facility that provided for $620,000,000 of total commitments.

The amended credit facility provides for: (1) a $450,000,000 unsecured, revolving credit facility that matures in March 2019 (inclusive of an embedded 1-year extension option) with interest at 150 basis points over LIBOR; (2) a $130,000,000 unsecured term loan that matures in June 2020 with interest at 175 basis points over LIBOR of which interest of 3.91% is fixed with an interest rate swap agreement; and (3) two existing term loans which remain in place totaling $120,000,000, maturing in June 2020 and bearing interest at 175 basis points over LIBOR, a notional amount of $40,000,000 being fixed at 3.29% until 2019 and $80,000,000 being fixed at 3.86% until 2020.

At March 31, 2014, we had $343,000,000 available to draw on the revolving portion of the credit facility. The unused commitment fee is 40 basis points per annum. The unsecured credit facility requires that we maintain certain financial ratios within limits set by our creditors. To date, these ratios, which are calculated quarterly, have been within the limits required by the credit facility agreements.

As part of the Care acquisition, we assumed Fannie Mae mortgage loans, with principal balances of $70,840,000 and $7,208,000 on March 31, 2014, which have interest at rates of 6.85% and 7.17%, respectively, and mature on July 1, 2015 (prepayable without penalty after December 31, 2014).

The following table summarizes interest expense (in thousands):



	Three Months Ended
	March 31,
	2014		2013
Interest expense	$	4,374	$	1,041
Debt issuance costs expensed due to credit facility modifications	2,145		—
Amortization of debt issuance costs	368		82
Total interest expense	$	6,887	$	1,123

Interest Rate Swap Agreements

To mitigate our exposure to interest rate risk, we have entered into the following interest rate swap contracts on our bank term loans as of March 31, 2014 (dollars in thousands):



Date Entered	Maturity Date	Fixed Rate	Rate Index	Notional Amount		Fair Value
May 2012	April 2019	3.29%	1-month LIBOR	$	40,000	$	377
June 2013	June 2020	3.86%	1-month LIBOR	$	80,000	$	(247	)
March 2014	June 2020	3.91%	1-month LIBOR	$	130,000	$	(739	)

See Note 12 for fair value disclosures about our Fannie Mae mortgage loan and interest rate swap agreements.