Inventories (Tables)

12 Months Ended

Dec. 31, 2016

Inventory Disclosure [Abstract]

Schedule of Inventories

Inventories at December 31 consisted of the following (in thousands):

	2016		2015
Raw material	$	41,758	$	47,117
Work-in-process	12,268		16,238
Finished goods	35,586		43,703
Total inventories	$	89,612	$	107,058

Summary of Activity within the Reserve for Excess, Obsolete, and Slow Moving Inventory

The following table summarizes activity recorded within the reserve for excess, obsolete and slow moving inventory for the years ended December 31 (in thousands):

	2016			2015		2014
Beginning balance	$	7,428		$	5,575	$	5,570
Excess, obsolete and slow moving inventory expense	(239		)	1,539		731
Scrapped inventory and other adjustments	(3,388		)	314		(726		)
Ending balance	$	3,801		$	7,428	$	5,575