Property, Plant and Equipment

12 Months Ended

Dec. 31, 2020

Property Plant And Equipment [Abstract]

Property, Plant and Equipment

5. Property, Plant and Equipment

	December 31,
(table only in thousands)	2020			2019
Land	$	—		$	147
Building and improvements		7,594			7,400
Machinery and equipment		26,939			26,993
Property, plant and equipment, gross		34,533			34,540
Less accumulated depreciation		(18,305	)		(19,266	)
Property, plant and equipment, net	$	16,228		$	15,274

Depreciation expense was $2.5 million, $2.1 million and $3.5 million for 2020, 2019 and 2018, respectively.