Cash Equivalents and Investments in Marketable Securities (Tables)

12 Months Ended

Dec. 31, 2019

Cash and Cash Equivalents [Abstract]

Summary of Cash Equivalents and Investments in Marketable Securities

The following table summarizes the Company’s cash equivalents and investments in marketable securities measured at fair value on a recurring basis as of December 31, 2018:

			Fair value Measurements
	Total		Quoted prices in active market Level 1		Significant other observable inputs Level 2		Significant unobservable inputs Level 3
	(in thousands)
Money market funds	$	4,830	$	4,830	$	—	$	—
Commercial paper	1,497		—		1,497		—
Corporate notes and bonds	6,989		—		6,989		—
U.S. treasuries	8,375		8,375		—		—
Total	$	21,691	$	13,205	$	8,486	$	—
Classified as:
Cash equivalents	$	7,829
Marketable securities at fair value	13,862
Total	$	21,691

Unrealized Positions for Available-for-Sale Fixed-Maturity Debt Securities

The following table summarizes the unrealized positions for available-for-sale fixed-maturity debt securities disaggregated by class of instrument as of December 31, 2018:

	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
	(in thousands)
Money market funds	$	4,830	$	—	$	—		$	4,830
Commercial paper	1,497		—		—			1,497
Corporate notes and bonds	6,994		—		(5		)	6,989
U.S. treasuries	8,375		—		—			8,375
Total	$	21,696	$	—	$	(5	)	$	21,691