Long-term Debt (Tables)

3 Months Ended

Mar. 31, 2016

Debt Disclosure [Abstract]

Long-Term Debt

Long-term debt consisted of the following at March 31, 2016 and December 31, 2015:

In thousands	2016			2015
Convertible notes, net	$	166,635		$	164,438
Royalty financing, net	46,885			46,921
Facility lease obligation	248,635			231,733
	462,155			443,092
Less current portion	(16,636		)	(13,872		)
Long term portion	$	445,519		$	429,220

Outstanding Convertible Note Balances

The outstanding convertible note balances as of March 31, 2016 and December 31, 2015 consisted of the following:

In thousands	2016			2015
Liability component:
Principal	$	200,000		$	200,000
Less: debt discount and unamortized debt issuance costs	(33,365		)	(35,562		)
Net carrying amount	$	166,635		$	164,438
Equity component	$	40,896		$	40,896

Total Interest Expense Recognized Related to Convertible Notes

The following table sets forth total interest expense recognized related to the convertible notes for the three-month periods ended March 31, 2016 and March 31, 2015:

In thousands	2016		2015
Contractual interest expense	$	1,813	$	1,857
Amortization of debt discount	2,159		1,965
Amortization of debt issuance cost	37		34
Total interest expense	$	4,009	$	3,856