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Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2020

Accounting Policies [Abstract]

Schedule of Deferred Revenue Related to Revenue Recognized for Collaborations and Services

The activity related to deferred revenue and the related revenue recognized for collaborations and services is as follows (in thousands):

		December 31,
		2020				2019
Deferred revenue:
Beginning balance		$	40,847			$	47,565
Upfront and milestone payments			25,000				25,000
Pass through payments			1,910				6,016
Revenue — collaborations and services			(32,820	)			(37,734	)
Ending balance		$	34,937			$	40,847

Schedule of Reconciliation of Cash, Cash Equivalents, and Restricted Cash

The following table provides a reconciliation of cash, cash equivalents, and restricted cash reported on the consolidated balance sheets that sum to amounts reported on the consolidated statement of cash flows (in thousands):

		December 31,
		2020				2019
Cash and cash equivalents		$	67,005			$	29,906
Restricted cash			158				316
Total cash, cash equivalents, and restricted cash		$	67,163			$	30,222

Schedule of Accounts Receivable, Net

Accounts receivable, net consists of the following (in thousands):

		December 31,
		2020				2019
Accounts Receivable, gross		$	8,090			$	6,925
Wholesaler distribution fees and prompt pay discounts			(1,205	)			(1,767	)
Reserve for returns			(2,667	)			(1,645	)
Accounts receivable, net		$	4,218			$	3,513

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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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