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Significant Accounting Policies (Tables)

6 Months Ended

Jun. 30, 2019

Accounting Policies [Abstract]

Summary of Impact of Accounts Receivable Reserves on Gross Trade Accounts Receivable Balances

The following table summarizes the impact of accounts receivable reserves on the gross trade accounts receivable balances as of June 30, 2019 and December 31, 2018:

In thousands		June 30, 2019				December 31, 2018
Gross trade accounts receivable		$	116,262			$	86,133
Trade allowances			(18,512	)			(19,495	)
Chargebacks			(2,352	)			(115	)
Accounts receivable, net		$	95,398			$	66,523

Calculation of Net Loss and Number of Shares Used to Compute Basic and Diluted Net Loss per Share

The calculation of net loss and the number of shares used to compute basic and diluted net loss per share for the three and six months ended June 30, 2019 and 2018 are as follows:

		Three months ended June 30,								Six months ended June 30,
In thousands		2019				2018				2019				2018
Net loss—basic and diluted		$	(1,820	)		$	(34,210	)		$	(26,251	)		$	(58,305	)
Weighted average shares outstanding—basic    and diluted			330,863				293,662				329,793				289,458
Net loss per share—basic and diluted		$	(0.01	)		$	(0.12	)		$	(0.08	)		$	(0.20	)

Anti-Dilutive Securities Not Included in the Computation of Net Loss or Earnings per Share

For the three and six months ended June 30, 2019 and 2018, the following potentially dilutive securities were not included in the computation of net loss per share because the effect would be anti-dilutive:

		Three months ended June 30,								Six months ended June 30,
In thousands		2019				2018				2019				2018
Stock options			16,585				25,282				16,585				25,282
Restricted stock and restricted stock units			9,315				12,249				9,315				12,249
Exchangeable senior notes (if converted)			—				7,716				—				7,716
Preferred stock (if converted)			28,932				32,818				28,932				32,818

Assets and Liability Measured at Fair Value on a Recurring Basis

The following tables present information about the Company’s assets and liabilities as of June 30, 2019 and December 31, 2018 that are measured at fair value on a recurring basis and indicate the fair value hierarchy of the valuation techniques the Company utilized to determine such fair value:

		June 30, 2019
In thousands		Total				Level 1				Level 2				Level 3
Asset:
Cash equivalents—money markets		$	9,995			$	9,995			$	—			$	—

		December 31, 2018
In thousands		Total				Level 1				Level 2				Level 3
Asset:
Cash equivalents—money markets		$	9,880			$	9,880			$	—			$	—

Carrying Amounts and Estimated Fair Values of Debt Instruments

The carrying amounts of cash, cash equivalents, accounts payable and accrued liabilities approximate fair value because of their short-term nature. The carrying amounts and the estimated fair values of debt instruments as of June 30, 2019 and December 31, 2018 are as follows:

		June 30, 2019								December 31, 2018
In thousands		Carrying Value				Estimated Fair Value				Carrying Value				Estimated Fair Value
Current portion of long-term debt from royalty-bearing    instrument, net of accrued interest		$	44,852							$	33,602
Long-term debt from royalty-bearing instrument			23,202								46,108
Total long-term debt from royalty-bearing instrument		$	68,054			$	68,200			$	79,710			$	78,600

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Tabular disclosure of the various types of trade accounts and notes receivable and for each the gross carrying value, allowance, and net carrying value as of the balance sheet date. Presentation is categorized by current, noncurrent and unclassified receivables.

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