Inventories and Other Deferred Costs (Tables)

6 Months Ended

Jun. 30, 2018

Text Block [Abstract]

Summary of Inventories and Other Deferred Costs

Inventories and other deferred costs consist of the following:

	June 30, 2018		December 31, 2017
	(in thousands)
Raw materials	$	3,549	$	3,200
Work-in-process		4,253		3,745
Finished products		12,668		12,278
Other deferred costs		1,199		1,823
Total inventory and other deferred costs	$	21,669	$	21,046