Equipment and Leasehold Improvements (Tables)

12 Months Ended

Dec. 31, 2020

Property, Plant and Equipment [Abstract]

Schedule of components of equipment and leasehold improvements

Equipment and leasehold improvements consist of the following: 

	As of December 31,
	2020			2019
Machinery and equipment	$	16,758		$	16,126
Office equipment		870			855
Office furniture		110			110
Leasehold improvements		4,850			4,839
Construction in progress		445			163
		23,033			22,093
Less: Accumulated depreciation and amortization		(20,165	)		(19,838	)
	$	2,868		$	2,255