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Segment and related information
12 Months Ended
Dec. 31, 2018
Segment and Related Information Disclosure [Abstract]  
Segment Reporting Disclosure [Text Block]

22. Segment and Related Information

Operating segments are determined by products and services provided by each segment, internal organization structure, the manner in which operations are managed, criteria used by the Chief Operating Decision Maker, or CODM, to assess the segment performance, as well as resource allocation and the availability of discrete financial information. The Company has one operating segment and therefore segment results and consolidated results are the same.

Refer to footnote 19 for a summary of revenue by geographic area of origin.

The following tables summarize additional selected financial information of the Company’s continuing operations by geographic location:

Long-lived assets by geographic area consist of the following:
December 31,
20182017
(in thousands)
United States$42,222$3,800
Germany5,0225,793
United Kingdom585966
Rest of the world2,6013,214
Long-lived assets held for sale-6,327
Total long-lived assets (1)$50,430$20,100
(1) Total long-lived assets consists of property, plant and equipment, net and amortizable intangible assets, net.

Net assets by geographic area consist of the following:
December 31,
20182017
(in thousands)
United States$38,921$15,502
Germany17,26118,354
United Kingdom10,47314,376
Rest of the world16,06917,472
Net assets held for sale-15,196
Total net assets$82,724$80,900