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Accounts Receivable and Sales Concentrations (Tables) | 12 Months Ended
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Dec. 31, 2012
Accounts Receivable and Sales Concentrations/Long Term Note Receivable [Abstract] |
Summary of accounts receivables |
|  | December 31, |
|  | 2012 |  |  | 2011 |
Trade |  | $ | 51,939 |  |  | $ | 67,145 |
Less—allowance for doubtful accounts |  |  | 311 |  |  |  | 438 |
Accounts receivable, net |  | $ | 51,628 |  |  | $ | 66,707 |
Summary of Activity in the allowance for doubtful accounts |
Description |  | Balance at Beginning of Year |  |  | Additions |  |  | Write- offs |  |  | Currency Impacts |  |  | Balance at End of Year |
December 31, 2012 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Allowance for doubtful accounts |  | $ | 438 |  |  | $ | 98 |  |  | $ | (224 | ) |  | $ | (1 | ) |  | $ | 311 |
December 31, 2011 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Allowance for doubtful accounts |  | $ | 478 |  |  | $ | 140 |  |  | $ | (178 | ) |  | $ | (2 | ) |  | $ | 438 |
December 31, 2010 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Allowance for doubtful accounts |  | $ | 473 |  |  | $ | 97 |  |  | $ | (81 | ) |  | $ | (11 | ) |  | $ | 478 |

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- Definition Tabular disclosure of financing receivables (examples of financing receivables include loans, trade accounts receivable and notes receivable) and activity in the allowance for credit losses account. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -URI http://asc.fasb.org/extlink&oid=7512638&loc=SL6953423-111524 + 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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