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Schedule II - Valuation and Qualifying Accounts | 12 Months Ended
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Dec. 31, 2012
Schedule of Valuation and Qualifying Accounts Disclosure [Text Block] | Schedule II – Valuation and Qualifying Accounts (in thousands)
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Description |  | Balance at Beginning of Period |  |  | Charged to Costs and Expenses |  |  | Charged to Other Accounts |  |  | Deductions |  |  | Balance at End of Period |
Year Ended December 31, 2010 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Allowance for doubtful accounts |  | $ | 665 |  |  | $ | 3,031 |  |  | $ | - |  |  | $ | (2,386 | ) |  | $ | 1,310 |
Tax valuation reserve |  | $ | 605 |  |  | $ | (193 | ) |  | $ | - |  |  | $ | - |  |  | $ | 412 |
Year Ended December 31, 2011 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Allowance for doubtful accounts |  | $ | 1,310 |  |  | $ | 1,125 |  |  | $ | 213 |  |  | $ | (921 | ) |  | $ | 1,727 |
Tax valuation reserve |  | $ | 412 |  |  | $ | - |  |  | $ | - |  |  | $ | (11 | ) |  | $ | 401 |
Year Ended December 31, 2012 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Allowance for doubtful accounts |  | $ | 1,727 |  |  | $ | 322 |  |  | $ | - |  |  | $ | (452 | ) |  | $ | 1,597 |
Tax valuation reserve |  | $ | 401 |  |  | $ | 799 |  |  | $ | - |  |  | $ | - |  |  | $ | 1,200 |

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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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Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
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Period Type: | duration