Product and Geographic Information (Tables)

12 Months Ended

Dec. 31, 2017

Segment Reporting [Abstract]

Breakdown of Product Net Sales

The following table provides a breakdown of product net sales from continuing operations for the years indicated (in thousands):

	Year ended December 31,
	2017		2016		2015
Commercial	$	15,217	$	14,809	$	14,156
Military maritime	4,629		16,189		50,128
R&D services	—		—		119
Total net sales	$	19,846	$	30,998	$	64,403

Geographic Summary of Net Sales

A geographic summary of net sales from continuing operations is as follows (in thousands):

	For the year ended December 31,
	2017		2016		2015
United States	$	19,446	$	29,840	$	64,251
International	400		1,158		152
Total net sales	$	19,846	$	30,998	$	64,403