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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Accounts Receivable (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2013 | Sep. 30, 2012 | Sep. 30, 2013 | Sep. 30, 2012
Allowance for Doubtful Accounts Receivable [Roll Forward] |  |  |  |
Beginning balance | $ 2,362 | $ 1,236 | $ 2,171 | $ 1,088
Provision | 2,769 | 679 | 4,966 | 1,649
Write Offs | (1,086) | (339) | (3,092) | (1,161)
Ending balance | $ 4,045 | $ 1,576 | $ 4,045 | $ 1,576
Accounts receivable, general payment terms | 30 days |  | 30 days |
Accounts receivable, international extended payment terms greater than | 90 days |  | 90 days |

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- Definition For an unclassified balance sheet, a valuation allowance for receivables due a company that are expected to be uncollectible. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=7512638&loc=d3e5074-111524 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 4 -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.10) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
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- Definition Amount of direct write-downs of receivables charged against the allowance for doubtful accounts. + References No definition available. + Details
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