Notes Payable (Tables)

3 Months Ended

Mar. 31, 2015

Debt Disclosure [Abstract]

Summary of Notes Payable

Notes payable, net of related discounts, consists of the following:

	March 31, 2015 (unaudited)		December 31, 2014
	(in thousands)
Second Amended and Restated Convertible Notes	$	35,352	$	35,332
Loan Agreement		13,307		8,307
Second Amended and Restated Bridge Notes		244		271
Second Amended and Restated Reimbursement Notes		636		636
Non-current Notes payable, net of related discounts	$	49,539	$	44,546

Book Value of MHR Convertible Notes

The carrying value of the MHR Notes is comprised of the following:

	March 31, 2015			December 31, 2014
	(unaudited)
	(in thousands)
Amended and Restated Convertible Notes	$	40,897		$	40,897
Loan Agreement		13,307			8,307
Amended and Restated Reimbursement Notes		683			683
Amended and Restated Bridge Notes		1,855			1,855
Unamortized discounts		(7,203	)		(7,196	)
	$	49,539		$	44,546