Inventories (Tables)

3 Months Ended

Mar. 31, 2016

Inventory Disclosure [Abstract]

Inventories

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

	March 31, 2016		December 31, 2015
Raw materials and construction materials	$	22,664	$	23,239
Work in process	14,339		14,306
	$	37,003	$	37,545