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Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 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 December 31, 2019 and 2018:

In thousands		December 31, 2019				December 31, 2018
Gross trade accounts receivable		$	149,567			$	86,133
Trade allowances			(29,261	)			(19,495	)
Chargebacks			(3,876	)			(115	)
Accounts receivable, net		$	116,430			$	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 years ended December 31, 2019, 2018, and 2017 are as follows:

In thousands		2019				2018				2017
Net loss—basic and diluted		$	(22,645	)		$	(116,445	)		$	(67,865	)
Weighted average shares outstanding—basic and diluted			342,538				297,237				270,652
Net loss per share—basic and diluted		$	(0.07	)		$	(0.39	)		$	(0.25	)

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

For the years ended December 31, 2019, 2018 and 2017, the following potentially dilutive securities were not included in the computation of net loss per share because the effect would be anti-dilutive:

In thousands		2019				2018				2017
Stock options			15,619				19,263				24,108
Restricted stock and restricted stock units			6,921				9,633				12,006
Exchangeable senior notes (if converted)			—				—				7,716
Preferred stock (if converted)			28,932				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 December 31, 2019 and 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:

		December 31, 2019
In thousands		Total				Level 1				Level 2				Level 3
Asset:
Cash equivalents—money markets		$	10,078			$	10,078			$	—			$	—

		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 December 31, 2019 and 2018 are as follows:

		December 31, 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		$	49,702							$	33,602
Long-term debt from royalty-bearing instrument			—								46,108
Total long-term debt from royalty-bearing instrument		$	49,702			$	50,400			$	79,710			$	78,600

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Tabular disclosure of financial instruments measured at fair value, including those classified in shareholders' equity measured on a recurring or nonrecurring basis. Disclosures include, but are not limited to, fair value measurements recorded and the reasons for the measurements, level within the fair value hierarchy in which the fair value measurements are categorized and transfers between levels 1 and 2. Nonrecurring fair value measurements are those that are required or permitted in the statement of financial position in particular circumstances.

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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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Tabular disclosure of securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) in the future that were not included in the computation of diluted EPS because to do so would increase EPS amounts or decrease loss per share amounts for the period presented, by antidilutive securities.

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Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations.

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