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Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2019

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,
		2019				2018
Deferred revenue:
Beginning balance		$	47,565			$	750
Upfront and milestone payments			25,000				55,000
Pass through payments			6,016				2,398
Revenue — collaborations and services			(37,734	)			(10,583	)
Ending balance		$	40,847			$	47,565

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,
		2019				2018
Cash and cash equivalents		$	29,906			$	71,157
Restricted cash			316				527
Total cash, cash equivalents, and restricted cash		$	30,222			$	71,684

Schedule of Accounts Receivable, Net

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

		December 31,
		2019				2018
Accounts Receivable, gross		$	6,925			$	5,198
Wholesaler distribution fees and prompt pay discounts			(1,767	)			(868	)
Reserve for returns			(1,645	)			(313	)
Accounts receivable, net		$	3,513			$	4,017

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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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