Property, Plant and Equipment

12 Months Ended

Dec. 31, 2021

Property Plant And Equipment [Abstract]

Property, Plant and Equipment

6. Property, plant and equipment:

Property, plant and equipment consisted of the following:

	December 31,
	2021			2020
Research equipment	$	8,424		$	8,683
Office furniture and equipment		832			994
Computer equipment		1,539			2,641
Leasehold improvements		7,021			6,390
Less: accumulated depreciation and amortization		(13,350	)		(15,154	)
Net book value	$	4,466		$	3,554