Accounting Policies (Tables)

3 Months Ended

Mar. 31, 2020

Accounting Policies [Abstract]

Percentage of Net Product Sales and Accounts Receivable Balance

Our products are distributed in the U.S. through a limited number of specialty distributors and full line wholesalers (collectively, “Customers”) that resell our products to healthcare providers and hospitals, the end users. The following table includes the percentage of net product sales and accounts receivable balances for our three major Customers, each of which comprised 10% or more of our net product sales:

	Net Product Sales			Accounts Receivable
	Three Months Ended March 31, 2020			As of March 31, 2020
Customer A		40.7	%		46.9	%
Customer B		36.7	%		41.4	%
Customer C		21.0	%		11.0	%
Total		98.4	%		99.3	%

Summary of Activity to Product Returns, Distributor Fees and Discounts, Rebates and Administrative Fees

The following table provides a summary of activity with respect to our product returns, distributor fees and discounts, rebates and administrative fees, which are included in other accrued liabilities on the condensed consolidated balance sheets (in thousands):

	Product Returns			Distributor Fees			Discounts, Rebates and Administrative Fees			Total
Balance at December 31, 2019	$	2,351		$	3,999		$	21,589		$	27,939
Provision		152			4,219			25,645			30,016
Payments/credits		(79	)		(4,221	)		(29,910	)		(34,210	)
Balance at March 31, 2020	$	2,424		$	3,997		$	17,324		$	23,745

Common Stock Equivalents Excluded From Computation of Net Loss Per Share

Because we have incurred a net loss for both periods presented in the unaudited condensed consolidated statements of operations and comprehensive loss, the following common stock equivalents were not included in the computation of net loss per share because their effect would be anti-dilutive (in thousands):

	March 31,
	2020		2019
Stock options outstanding		16,510		14,281
Warrants outstanding		220		640
Shares of common stock underlying Convertible Notes    outstanding		9,095		8,600