Fair Value Measurement (Tables)

12 Months Ended

Dec. 31, 2013

Notes to Financial Statements

Fair Value Measurement (Tables)

In accordance with the fair value hierarchy described above, the following table shows the fair value of the Company's financial assets (all marketable investment securities) that are required to be measured at fair value as of December 31, 2013 and December 31, 2012 (in thousands):

As of December 31, 2013:		Level 1		Level 2		Level 3		Total
Marketable investment securities	$	116,250	$	13,020	$	-	$	129,270

As of December 31, 2012:		Level 1		Level 2		Level 3		Total
Marketable investment securities	$	67,723	$	15,521	$	-	$	83,244

Fair and Carrying Value of Debt Instruments

The fair and carrying value of our debt instruments are detailed as follows (in thousands):

		As of December 31, 2013				As of December 31, 2012
	Fair		Carrying		Fair		Carrying
		Value		Value		Value		Value
5.75% Convertible Notes	$	92,338	$	16,545	$	28,131	$	16,545
Sensipar Notes		54,097		54,395		79,129		80,234
PTH 1-84-Secured Debt		50,058		42,790		28,605		42,816
Regpara-Secured Debt		37,348		35,202		48,887		36,252
Total	$	233,841	$	148,932	$	184,752	$	175,847