6. GEOGRAPHIC AND CUSTOMER INFORMATION

The geographical distribution of long-lived assets, consisting of property, plant and equipment and net sales to geographical areas as of and for the years ended December 31, 2017 and 2016 is set forth below:

Long-lived Assets, Net



		December 31,		December 31,
		2017		2016
United States	$	5,407	$	4,640
Singapore		1,254		1,413
Other – primarily United Kingdom and Indonesia		514		553
Consolidated	$	7,175	$	6,606

Long-lived assets consist of property and equipment. Excluded from long-lived assets are investments in partnerships, patents, license agreements, intangible assets and goodwill. The Company capitalizes long-lived assets pertaining to the production of specialized parts. These assets are periodically reviewed to assure the net realizable value from the estimated future production based on forecasted cash flows exceeds the carrying value of the assets.

Net Sales to Geographical Areas


		Year Ended December 31
Net Sales to Geographical Areas		2017		2016	2015

United States	$	70,746	$	47,460	$ 49,687
Europe		9,249		11,019	6,634
Asia		7,477		8,187	10,901
All other countries		838		1,343	1,305
Consolidated	$	88,310	$	68,009	$ 68,527

Geographic net sales are allocated based on the location of the customer.

Customer Information

One customer accounted for 48 percent, 40 percent and 43 percent of the Company’s consolidated net sales in 2017, 2016 and 2015, respectively. During 2017, 2016 and 2015, the top five customers accounted for approximately 63 percent, 59 percent and 61 percent of the Company’s consolidated net sales, respectively.

At December 31, 2017, two customers accounted for a combined 33 percent of the Company’s consolidated accounts receivable. Two customers accounted for a combined 31 percent of the Company’s consolidated accounts receivable at December 31, 2016.