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Restatement of the Condensed Consolidated Financial Statements - Additional Information (Detail) (USD $) | 3 Months Ended | 9 Months Ended | 6 Months Ended | 12 Months Ended | 9 Months Ended | 12 Months Ended
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Sep. 30, 2012 | Sep. 30, 2013 | Sep. 30, 2012 | Jun. 30, 2012 Inventory Reserves [Member] | Dec. 31, 2012 Inventory Reserves [Member] | Sep. 30, 2013 Distributor Revenue [Member] Distributors | Dec. 31, 2012 Distributor Revenue [Member] Distributor
Increase (Decrease) in net sales | $ 6,900,000 |  | $ 20,100,000 |  |  |  |
Increase (Decrease) in net income | 2,500,000 |  | 10,300,000 |  |  |  |
Number of distributer terminated |  |  |  |  |  |  | 2
Sales return |  |  |  |  |  |  | 3,300,000
Distributors that did not meet the fixed or determinable or collectability revenue recognition criteria |  |  |  |  |  | 4 |
Increase (Decrease) in accounts receivable |  | (27,758,000) | 14,169,000 |  |  |  | (41,300,000)
Increase (Decease) in inventory |  | 11,596,000 | (325,000) |  | (14,800,000) |  | 11,000,000
Increase (Decrease) in inventory reserve |  |  |  | $ 1,200,000 |  |  |

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- Definition The increase (decrease) during the reporting period in amount due within one year (or one business cycle) from customers for the credit sale of goods and services. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 28 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3602-108585 + Details
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- Definition The increase (decrease) during the reporting period in the aggregate value of all inventory held by the reporting entity, associated with underlying transactions that are classified as operating activities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 28 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3602-108585 + Details
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- Definition The increase (decrease) in sales and transfer prices and in production (lifting) costs related to future production. The effects of changes in prices and costs are computed before the effects of changes in quantities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 35 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=8451039&loc=d3e62500-109447 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 19 -Paragraph 59BB -Subparagraph a -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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