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Schedule II Valuation And Qualifying Accounts | 12 Months Ended
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Dec. 31, 2011
Schedule II Valuation And Qualifying Accounts [Abstract] |
Schedule II Valuation And Qualifying Accounts | Schedule II Valuation and Qualifying Accounts
|  | Balance at Beginning of Year |  |  | Additions Charged to Costs or Expenses or Revenue |  |  | Deductions and Write Offs |  |  | Balance At End Of Year |
|  | (In thousands) |
Year ended December 31, 2011 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Allowance for doubtful accounts |  | $ | 617 |  |  | $ | 130 |  |  | $ | (345 | ) |  | $ | 402 |
Product return reserve |  |  | 551 |  |  |  | 4,996 |  |  |  | (4,712 | ) |  |  | 835 |
Year ended December 31, 2010 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Allowance for doubtful accounts |  | $ | 1,008 |  |  | $ | 233 |  |  | $ | (624 | ) |  | $ | 617 |
Product return reserve |  |  | 1,199 |  |  |  | 2,845 |  |  |  | (3,493 | ) |  |  | 551 |
Year ended December 31, 2009 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Allowance for doubtful accounts |  | $ | 943 |  |  | $ | 520 |  |  | $ | (455 | ) |  | $ | 1,008 |
Product return reserve |  |  | 895 |  |  |  | 5,657 |  |  |  | (5,353 | ) |  |  | 1,199 |
Schedules not listed above have been omitted because they are not applicable or are not required or the information required to be set forth therein is included in the consolidated financial statements and notes thereto.

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- Definition The entire disclosure for any allowance and reserve accounts (their beginning and ending balances, as well as a reconciliation by type of activity during the period). Alternatively, disclosure of the required information may be within the footnotes to the financial statements or a supplemental schedule to the financial statements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 09 -Article 12 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6881521&loc=d3e24092-122690 + Details
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