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Summary of Significant Accounting Policies (Tables) | 12 Months Ended
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Dec. 31, 2017
Accounting Policies [Abstract] |
Intangible Assets and Goodwill | The changes in the carrying amounts of finite-life intangible assets and goodwill for the years ended December 31, 2017 and 2016 are as follows (in thousands):
|  | December 31, 2017 |  |  | December 31, 2016 |
Intangibles, net: |  |  |  |  |  |  |  |
Beginning balance |  | $ | 8,447 |  |  | $ | 9,031 |
Increase |  |  | — |  |  |  | — |
Amortization |  |  | (1,240 | ) |  |  | (584 | )
Ending balance |  |  | 7,207 |  |  |  | 8,447 |
Goodwill, net: |  |  |  |  |  |  |  |
Beginning balance |  |  | 3,922 |  |  |  | 3,922 |
Increase (decrease) |  |  | — |  |  |  | — |
Ending balance |  |  | 3,922 |  |  |  | 3,922 |
Total goodwill and other intangibles, net |  | $ | 11,129 |  |  | $ | 12,369 |
Product Revenues, Classified by Geographic Location | Product revenues, classified by geographic location, are as follows (in thousands):
|  | Years ended December 31, |
|  | 2017 |  |  | 2016 |
|  | Product Revenues |  |  | % of Total |  |  | Product Revenues |  |  | % of Total |
Americas |  | $ | 345 |  |  |  | 13 | % |  | $ | 936 |  |  |  | 20 | %
Japan |  |  | 1,924 |  |  |  | 71 | % |  |  | 3,279 |  |  |  | 71 | %
EMEA |  |  | 344 |  |  |  | 13 | % |  |  | 379 |  |  |  | 8 | %
Asia Pacific |  |  | 76 |  |  |  | 3 | % |  |  | 62 |  |  |  | 1 | %
Total product revenues |  | $ | 2,689 |  |  |  | 100 | % |  | $ | 4,656 |  |  |  | 100 | %

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- Definition Tabular disclosure of revenue from external customers by geographic areas attributed to the entity's country of domicile and to foreign countries from which the entity derives revenue. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 41 -Subparagraph a -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e9038-108599 + Details
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- Definition Tabular disclosure of goodwill and intangible assets, which may be broken down by segment or major class. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 + Details
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