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Notes and Accounts Receivable (Tables) | 12 Months Ended
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Dec. 31, 2014
Summary of Notes and Accounts Receivable |
|  | December 31 |
|  | 2013 |  |  | 2014 |
|  | US$ |  |  | US$ |
Notes receivable |  |  | 251 |  |  |  | 192 |
Trade accounts receivable |  |  | 33,296 |  |  |  | 31,256 |
|  |  | 33,547 |  |  |  | 31,448 |
Allowance for doubtful accounts |  |  | (1,275 | ) |  |  | (1,167 | )
Allowance for sales returns and discounts |  |  | (1,059 | ) |  |  | (1,427 | )
|  |  | 31,213 |  |  |  | 28,854 |
Changes in Allowances | The changes in the allowances are summarized as follows:
|  | Year Ended December 31 |
|  | 2012 |  |  | 2013 |  |  | 2014 |
|  | US$ |  |  | US$ |  |  | US$ |
Allowances for doubtful accounts |  |  |  |  |  |  |  |  |  |  |  |
Balance, beginning of year |  |  | 2,648 |  |  |  | 1,634 |  |  |  | 1,275 |
Additions (reversals) charged to expense, net |  |  | (663 | ) |  |  | (359 | ) |  |  | (108 | )
Write-offs |  |  | (351 | ) |  |  | — |  |  |  | — |
Balance, end of year |  |  | 1,634 |  |  |  | 1,275 |  |  |  | 1,167 |
|  | Year Ended December 31 |
|  | 2012 |  |  | 2013 |  |  | 2014 |
|  | US$ |  |  | US$ |  |  | US$ |
Allowances for sales returns and discounts |  |  |  |  |  |  |  |  |  |  |  |
Balance, beginning of year |  |  | 2,709 |  |  |  | 1,919 |  |  |  | 1,059 |
Additions |  |  | 297 |  |  |  | 1,320 |  |  |  | 1,600 |
Write-offs |  |  | (1,087 | ) |  |  | (2,180 | ) |  |  | (1,232 | )
Balance, end of year |  |  | 1,919 |  |  |  | 1,059 |  |  |  | 1,427 |

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- Definition Schedule of allowance for doubtful accounts, and sales returns and discounts. + References No definition available. + Details
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- Definition Tabular disclosure of the various types of trade accounts and notes receivable and for each the gross carrying value, allowance, and net carrying value as of the balance sheet date. Presentation is categorized by current, noncurrent and unclassified receivables. + 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 210.5-02.3,4) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 3, 4 -Article 5 + Details
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