Fair Value of Financial Instruments (Tables)

12 Months Ended

Dec. 31, 2020

Fair Value Disclosures [Abstract]

Schedule of Estimated Fair Values of Financial Instruments Outstanding

The estimated fair values of financial instruments outstanding were (in thousands):

	December 31, 2020
			Unrealized		Unrealized		Fair
	Cost		Gains		Losses		Value
Cash and cash equivalents	$	5,889	$	—	$	—	$	5,889

	December 31, 2019
			Unrealized		Unrealized		Fair
	Cost		Gains		Losses		Value
Cash and cash equivalents	$	6,053	$	—	$	—	$	6,053
Short-term investments		300		—		—		300
	$	6,353	$	—	$	—	$	6,353

Schedule of Fair Value Hierarchy for Financial Assets (Cash Equivalents and Investments)

The following table represents the Company’s fair value hierarchy for its financial assets (cash equivalents and investments) as of December 31, 2020 and 2019 (in thousands):

	December 31, 2020
	Fair Value		Level 1		Level 2		Level 3
Money market funds	$	3,893	$	3,893	$	—	$	—

	December 31, 2019
	Fair Value		Level 1		Level 2		Level 3
Money market funds	$	4,574	$	4,574	$	—	$	—
Corporate notes and commercial paper	$	300	$	—	$	300	$	—