Inventories (Tables)

3 Months Ended

Mar. 31, 2020

Inventory Disclosure [Abstract]

Inventories

Inventories in the accompanying Consolidated Balance Sheets consisted of the following amounts (in thousands):

	March 31, 2020		December 31, 2019
Raw materials and construction materials	$	25,749	$	31,365
Work in process	9,638		9,081
Inventories	$	35,387	$	40,446