Property, Plant and Equipment

12 Months Ended

Dec. 31, 2021

Property, Plant and Equipment [Abstract]

4. Property, Plant and Equipment

Property, plant and equipment consist of the following (in thousands):

	DECEMBER 31,			DECEMBER 31,
	2021			2020
Land	$	1		$	1
Buildings		6,562			6,562
Computer equipment and software		581			564
Furniture, fixtures and office equipment		393			416
Machinery and equipment		16,829			16,047
Leasehold improvements		2,410			2,410
Construction in progress		891			367
Gross property, plant and equipment		27,667			26,367
Less accumulated depreciation and amortization		(14,991	)		(13,802	)
Property, plant and equipment, net	$	12,676		$	12,565

The Company recognized depreciation and amortization expense of $1,189,000 and $1,210,000 during the years ended December 31, 2021 and 2020, respectively. Of the total depreciation and amortization expense, $1,011,000 and $1,024,000, respectively as of December 31, 2021 and 2020, are included in cost of product revenues in connection with property, plant, and equipment at the Company’s manufacturing plant. The total depreciation and amortization for disposed assets during the year ended December 31, 2021 and 2020 was $0 and $23,000, respectively.

MARRONE BIO INNOVATIONS INC 10-K/A