Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2021

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,
	2021		2020
Cash and cash equivalents	$	124,184	$	67,005
Restricted cash		—		158
Total cash, cash equivalents, and restricted cash	$	124,184	$	67,163

Schedule of Contractual Maturities of Held to Maturity Investments

The contractual maturities of our held to maturity investments as of December 31, 2021 and 2020 are summarized below (in thousands):

	December 31, 2021				December 31, 2020
	Amortized Cost Basis		Aggregate Fair Value		Amortized Cost Basis		Aggregate Fair Value
Due in one year or less⁽¹⁾	$	103,733	$	103,669	$	59,495	$	59,495
Due after one year through five years		56,619		56,433		—		—
Total	$	160,352	$	160,102	$	59,495	$	59,495

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(1)	The investments due in one year or less include cash equivalents of $23.8 million as of December 31, 2021 and $59.5 million as of December 31, 2020.

Schedule of Accounts Receivable, Net

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

	December 31,
	2021			2020
Accounts receivable – commercial
Accounts receivable, gross	$	7,939		$	8,090
Wholesaler distribution fees and prompt pay discounts		(1,696	)		(1,205	)
Reserve for returns		(2,797	)		(2,667	)
Total accounts receivable – commercial, net		3,446			4,218
Accounts receivable – collaborations and services
Accounts receivable, gross		2,060			—
Allowance for credit losses		(767	)		—
Total accounts receivable – collaborations and services, net		1,293			4,218
Accounts receivable – other		255			—
Total accounts receivable, net	$	4,994		$	4,218