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Other Accrued Expenses and Other Current Liabilities (Tables) | 12 Months Ended
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Dec. 31, 2016
Payables and Accruals [Abstract] |
Schedule of Accounts Payable and Accrued Liabilities [Table Text Block] |
|  | December 31, |
|  | 2015 |  | 2016 |
|  | (in thousands) |
Accrued mask, mold fees and other expenses for RD |  | $ | 9,217 |  |  | 7,503 |
Payable for purchases of equipment |  |  | 2,950 |  |  | 1,615 |
Accrued software maintenance |  |  | 1,750 |  |  | 891 |
Accrued payroll and related expenses |  |  | 7,780 |  |  | 6,958 |
Accrued professional service fee |  |  | 1,066 |  |  | 923 |
Sales received in advance |  |  | 3,655 |  |  | 1,193 |
Accrued warranty costs |  |  | 227 |  |  | 48 |
Accrued insurance, welfare expenses, etc. |  |  | 9,385 |  |  | 10,590 |
|  | $ | 36,030 |  |  | 29,721 |
Schedule of Product Warranty Liability [Table Text Block] | The movement in accrued warranty costs for the years ended December 31, 2014, 2015 and 2016 is as follows:
|  | Balance at |  | Additions |  |  |  | Balance at |
|  | beginning |  | charged to |  | Amounts |  | end of |
Period |  | of year |  | expense |  | utilized |  | year |
|  | (in thousands) |
Year 2014 |  | $ | 121 |  |  | 355 |  |  | (373) |  |  | 103 |
Year 2015 |  | $ | 103 |  |  | 1,121 |  |  | (997) |  |  | 227 |
Year 2016 |  | $ | 227 |  |  | 11 |  |  | (190) |  |  | 48 |

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- Definition Tabular disclosure of the (a) carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business (accounts payable); (b) other payables; and (c) accrued liabilities. Examples include taxes, interest, rent and utilities. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer). An alternative caption includes accrued expenses. + References No definition available. + Details
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- Definition Tabular disclosure of the changes in the guarantor's aggregate product warranty liability, including the beginning balance of the aggregate product warranty liability, the aggregate reductions in that liability for payments made (in cash or in kind) under the warranty, the aggregate changes in the liability for accruals related to product warranties issued during the reporting period, the aggregate changes in the liability for accruals related to preexisting warranties (including adjustments related to changes in estimates), and the ending balance of the aggregate product warranty liability. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=68068213&loc=d3e12565-110249 + Details
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