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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 | Valuation and Qualifying Accounts Years Ended December 31, 2011, 2010 and 2009 (In thousands)
Description |  | Balance at Beginning of Year |  |  | Additions Charged (Credited) to Costs and Expenses |  |  | Deductions |  |  |  | Balance at End of Year |
Year ended December 31, 2011 |  |  |  |  |  |  |  |  |  |  |  |  |
Allowance for doubtful accounts |  | $ | 122 |  |  | $ | (17 | ) |  | $ | (47 | ) | (a) |  | $ | 58 |
Inventory reserve |  |  | 159 |  |  |  | 64 |  |  |  | (91 | ) | (a) |  |  | 132 |
Year ended December 31, 2010 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Allowance for doubtful accounts |  | $ | 357 |  |  | $ | (235 | ) |  | $ | - |  |  |  | $ | 122 |
Inventory reserve |  |  | 799 |  |  |  | 279 |  |  |  | (919 | ) | (a) |  |  | 159 |
Year ended December 31, 2009 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Allowance for doubtful accounts |  | $ | 50 |  |  | $ | 313 |  |  | $ | (6 | ) | (a) |  | $ | 357 |
Inventory reserve |  |  | 94 |  |  |  | 924 |  |  |  | (219 | ) | (a) |  |  | 799 |
(a) represents write-offs.

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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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