7. Debt

Long-Term Debt

Long-term debt as of December 31, 2013, consists of a mortgage note payable, which is secured by certain land and buildings with carrying amounts aggregating approximately $4.7 million and $4.8 million as of December 31, 2013 and December 31, 2012, respectively. The mortgage note payable ($2.1 million as of December 31, 2013 and $2.4 million as of December 31, 2012) bears interest at an annual rate of 7.91%, with the final payment due on January 1, 2020. We estimate the fair market value of this note as of December 31, 2013 and 2012 was approximately $2.3 million and $2.6 million, respectively.

Maturity of Long-Term Debt

Long-term debt matures as follows (in thousands):

2014	$	290
2015	314
2016	340
2017	368
2018	398
Thereafter	427
	2,137
Less current portion	290
	$	1,847

Convertible Notes

In 2011, we retired our convertible notes which were initially convertible into 36.7277 shares of common stock per $1,000 principal amount of notes (equivalent to a conversion price of $27.23 per share or a premium of 38% over the closing market price for Veeco’s common stock on April 16, 2007). We paid interest on these notes on April 15 and October 15 of each year. The notes were unsecured and were effectively subordinated to all of our senior and secured indebtedness and to all indebtedness and other liabilities of our subsidiaries.

During the first quarter of 2011, at the option of the holders, $7.5 million of notes were tendered for conversion at a price of $45.95 per share in a net share settlement. We paid the principal amount of $7.5 million in cash and issued 111,318 shares of our common stock. We recorded a loss on extinguishment totaling $0.3 million related to these transactions.

During the second quarter of 2011, we issued a notice of redemption on the remaining outstanding principal balance of notes outstanding. As a result, at the option of the holders, the notes were tendered for conversion at a price of $50.59 per share, calculated as defined in the indenture relating to the notes, in a net share settlement. As a result, we paid the principal amount of $98.1 million in cash and issued 1,660,095 shares of our common stock. We recorded a loss on extinguishment totaling $3.0 million related to these transactions.

Certain accounting guidance requires a portion of convertible debt to be allocated to equity. This guidance requires issuers of convertible debt that can be settled in cash to separately account for (i.e. bifurcate) a portion of the debt associated with the conversion feature and reclassify this portion to equity. The liability portion, which represents the fair value of the debt without the conversion feature, is accreted to its face value over the life of the debt using the effective interest method by amortizing the discount between the face amount and the fair value. The amortization is recorded as interest expense. Our convertible notes were subject to this accounting guidance. This additional interest expense did not require the use of cash.

The components of interest expense recorded on the notes were as follows (in thousands):

	For the year ended
	December 31,
	2011
Contractual interest	$	2,025
Accretion of the discount on the notes	1,260
Total interest expense on the notes	$	3,285
Effective interest rate	6.7		%