Segment Information and Foreign Operations (Tables)

6 Months Ended

Jun. 30, 2018

Segment Information and Foreign Operations

Revenues reported by product type

The following table represents revenue amounts (in thousands) by product type:

	Three Months Ended				Six Months Ended
	June 30,				June 30,
	2018		2017		2018		2017
Product Type:
Substrates	$	21,603	$	19,109	$	40,967	$	35,718
Raw Materials and Others		5,517		4,448		10,572		8,455
Total	$	27,120	$	23,557	$	51,539	$	44,173

Revenue reported for products shipped to customers in the corresponding geographic region

The following table represents revenue amounts (in thousands) reported for products shipped to customers in the corresponding geographic region:

	Three Months Ended				Six Months Ended
	June 30,				June 30,
	2018		2017		2018		2017
Geographical region:
China	$	8,820	$	6,324	$	16,003	$	10,746
Europe (primarily Germany)		6,685		5,848		13,078		11,446
Taiwan		4,280		4,195		9,329		7,513
Asia Pacific (excluding China, Taiwan and Japan)		2,571		2,645		4,065		4,716
Japan		2,524		2,862		4,979		6,002
North America (primarily the United States)		2,240		1,683		4,085		3,750
Total	$	27,120	$	23,557	$	51,539	$	44,173

Long-lived assets by geographic region

Long-lived assets consist primarily of property, plant and equipment, and are attributed to the geographic location in which they are located. Long-lived assets, net of depreciation, by geographic region were as follows (in thousands):

	As of
	June 30,		December 31,
	2018		2017
Long-lived assets by geographic region, net of depreciation:
North America	$	853	$	1,410
China		64,321		45,120
	$	65,174	$	46,530