Inventories (Tables)

3 Months Ended

Mar. 31, 2021

Inventory Disclosure [Abstract]

Summary of Inventories

(table only in thousands)	March 31, 2021			December 31, 2020
Raw materials	$	13,591		$	14,262
Work in process		5,208			5,594
Finished goods		643			496
Obsolescence allowance		(3,044	)		(3,009	)
Total inventories	$	16,398		$	17,343