Inventories (Tables)

9 Months Ended

Sep. 30, 2018

Inventory Disclosure [Abstract]

Schedule of Inventory

Inventories as of September 30, 2018 and December 31, 2017 are summarized in the following table:

	September 30, 2018		December 31, 2017
Finished goods	$	55,988	$	55,846
Contract assets	27,796		25,320
Work-in-process	8,364		4,059
Raw materials	22,653		17,505
Total inventories at current costs	114,801		102,730
Less LIFO reserve	(7,601)		(5,187)
	$	107,200	$	97,543