Long-term Debt (Tables)

6 Months Ended

Jun. 30, 2016

Debt Disclosure [Abstract]

Long-Term Debt

Long-term debt consisted of the following at June 30, 2016 and December 31, 2015:

In thousands	2016			2015
Convertible notes, net	$	168,884		$	164,438
Royalty financing, net	46,619			46,921
Facility lease obligation	275,776			231,733
	491,279			443,092
Less current portion	(24,522		)	(13,872		)
Long term portion	$	466,757		$	429,220

Outstanding Convertible Note Balances

The outstanding convertible note balances as of June 30, 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	(31,116		)	(35,562		)
Net carrying amount	$	168,884		$	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 and six-month periods ended June 30, 2016 and June 30, 2015:

	Three Months Ended June 30,				Six Months Ended June 30,
In thousands	2016		2015		2016		2015
Contractual interest expense	$	1,813	$	1,813	$	3,626	$	3,625
Amortization of debt discount	2,211		1,965		4,370		3,973
Amortization of debt issuance cost	38		35		75		70
Total interest expense	$	4,062	$	3,813	$	8,071	$	7,668