Fair Value of Financial Instruments (Tables)

12 Months Ended

Dec. 31, 2021

Fair Value of Financial Instruments [Abstract]

Assets and Liabilities Measured at Fair Value

The following table presents assets measured at fair value at December 31, 2021:

	Quoted Prices in Active Markets for Identical Assets		Significant Other Observable Inputs		Significant Unobservable Inputs
(in thousands)	(Level 1)		(Level 2)		(Level 3)		Total
Money market funds	$	15	$	-	$	-	$	15
Total assets	$	15	$	-	$	-	$	15

The following table presents assets measured at fair value at December 31, 2020:

	Quoted Prices in Active Markets for Identical Assets		Significant Other Observable Inputs		Significant Unobservable Inputs
(in thousands)	(Level 1)		(Level 2)		(Level 3)		Total
Money market funds	$	435	$	-	$	-	$	435
Total assets	$	435	$	-	$	-	$	435