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SCHEDULE II - VALUATION RESERVES | 12 Months Ended
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Dec. 31, 2012
Valuation and Qualifying Accounts [Abstract] |
SCHEDULE II – VALUATION RESERVES |
Description | Balance at beginning of year |  | Additions to costs and expenses |  | Deductions |  | Balance at end of year
Year ended December 31, 2012 |  |  |  |  |  |  |
Reserve deducted in the balance sheet from the assets to which it applies |  |  |  |  |  |  |
Allowance for doubtful accounts | $ | 4,204,000 |  |  | $ | 1,240,000 |  |  | $ | (314,000 | ) |  | $ | 5,130,000 |
Year ended December 31, 2011 |  |  |  |  |  |  |  |  |  |  |
Reserve deducted in the balance sheet from the assets to which it applies |  |  |  |  |  |  |  |  |  |  |
Allowance for doubtful accounts | $ | 3,889,000 |  |  | $ | 408,000 |  |  | $ | (93,000 | ) |  | $ | 4,204,000 |
Year ended December 31, 2010 |  |  |  |  |  |  |  |  |  |  |
Reserve deducted in the balance sheet from the assets to which it applies |  |  |  |  |  |  |  |  |  |  |
Allowance for doubtful accounts | $ | 3,958,000 |  |  | $ | 255,000 |  |  | $ | (324,000 | ) |  | $ | 3,889,000 |

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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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