XML 30 R18.htm IDEA: XBRL DOCUMENT

Certain Financial Statement Caption Information (Tables)

3 Months Ended

Mar. 31, 2021

Certain Financial Statement Caption Information [Abstract]

Schedule of Company's Short-Term Investments

The following table summarizes the Company’s short-term investments (in thousands):


		Maturity		Amortized				Unrealized				Unrealized				Estimated
		(in years)		Cost				Gains				Losses				Fair Value
March 31, 2021
U.S. treasury securities		1 or less		$	50,165			$	5			$	-			$	50,170
U.S. treasury securities		>1 and <5			2,558				-				(1	)			2,557
Certificates of deposit		1 or less			490				1				-				491
Total				$	53,213			$	6			$	(1	)		$	53,218
December 31, 2020
U.S. treasury securities		1 or less		$	56,218			$	6			$	(4	)		$	56,220
Certificates of deposit		1 or less			1,955				6				-				1,961
Total				$	58,173			$	12			$	(4	)		$	58,181

Schedule of Accrued Expenses

Accrued expenses consisted of the following (in thousands):


	March 31,				December 31,
	2021				2020
Accrued payroll and other employee benefits	$	1,104			$	1,870
Clinical studies		1,081				493
Other accruals		235				307
Preclinical studies		102				72
Accrued interest		71				71
Total accrued expenses	$	2,593			$	2,813