Inventories

6 Months Ended

Jun. 30, 2018

Inventory Disclosure [Abstract]

Inventories

Inventories

(In thousands)	June 30, 2018			December 30, 2017
Raw materials and supplies	$	75,307		$	108,397
Work-in-process	57,472			46,158
Finished goods	169,047			180,143
Valuation reserves	(7,286		)	(6,797		)
Inventories	$	294,540		$	327,901

The decrease in inventories was primarily driven by the use of excess inventory built at the end of 2017 due to a casting outage in our brass rod mill that impaired our ability to melt scrap returns.