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Cash and Cash Equivalents and Restricted Cash (Details) $ in Thousands, ¥ in Millions | Dec. 31, 2016 USD ($) | Sep. 29, 2016 CNY (¥) | Dec. 31, 2015 USD ($) | Sep. 04, 2015 USD ($) | Dec. 31, 2014 USD ($) | Dec. 31, 2013 USD ($)
--- | --- | --- | --- | --- | --- | ---
Cash and Cash Equivalents [Line Items] |  |  |  |  |  |
Total cash and cash equivalents | $ 50,611 |  | $ 52,966 |  | $ 112,521 | $ 76,174
Restricted Cash and Investments [Abstract] |  |  |  |  |  |
Long-term restricted cash | 4,600 |  | 0 |  |  |
Guangzhou Factory | Disposal Group, Disposed of by Sale, Not Discontinued Operations |  |  |  |  |  |
Restricted Cash and Investments [Abstract] |  |  |  |  |  |
Long-term restricted cash | 4,600 | ¥ 32 |  |  |  |
Surety Bond |  |  |  |  |  |
Restricted Cash and Investments [Abstract] |  |  |  |  |  |
Restricted cash |  |  |  | $ 4,600 |  |
United States |  |  |  |  |  |
Cash and Cash Equivalents [Line Items] |  |  |  |  |  |
Total cash and cash equivalents | 3,277 |  | 8,458 |  |  |
People's Republic of China (PRC) |  |  |  |  |  |
Cash and Cash Equivalents [Line Items] |  |  |  |  |  |
Total cash and cash equivalents | 22,142 |  | 28,681 |  |  |
Asia (excluding the PRC) |  |  |  |  |  |
Cash and Cash Equivalents [Line Items] |  |  |  |  |  |
Total cash and cash equivalents | 5,260 |  | 5,346 |  |  |
Europe |  |  |  |  |  |
Cash and Cash Equivalents [Line Items] |  |  |  |  |  |
Total cash and cash equivalents | 19,630 |  | 8,093 |  |  |
South America |  |  |  |  |  |
Cash and Cash Equivalents [Line Items] |  |  |  |  |  |
Total cash and cash equivalents | $ 302 |  | $ 2,388 |  |  |

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- Definition Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Cash -URI http://asc.fasb.org/extlink&oid=6506951 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 45 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=28358313&loc=d3e6676-107765 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3044-108585 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Cash Equivalents -URI http://asc.fasb.org/extlink&oid=6507016 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.1) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition The carrying amounts of cash and cash equivalent items which are restricted as to withdrawal or usage. Restrictions may include legally restricted deposits held as compensating balances against borrowing arrangements, contracts entered into with others, or entity statements of intention with regard to particular deposits; however, time deposits and short-term certificates of deposit are not generally included in legally restricted deposits. Excludes compensating balance arrangements that are not agreements which legally restrict the use of cash amounts shown on the balance sheet. This element is for unclassified presentations; for classified presentations there is a separate and distinct element. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.1) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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