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Finacial Statement Schedule | 12 Months Ended
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Dec. 31, 2011
Valuation and Qualifying Accounts Disclosure [Line Items] |
Schedule of Valuation and Qualifying Accounts Disclosure [Text Block] | (2) Financial Statement Schedule. — Schedule II - Valuation and qualifying accounts Years Ended December 31, 2011, 2010 and 2009 (In thousands)
Description |  | Balance at Beginning of Year |  | Additions Charged to Costs and Expenses (a) |  | Deduction (b) |  | Balance at End of Year
ALLOWANCE FOR UNCOLLECTIBLE ACCOUNTS: |  |  |  |  |  |  |  |  |  |  |  |
2009 |  | $ | (505 | ) |  | $ | (214 | ) |  | $ | 178 |  |  | $ | (541 | )
2010 |  | (541 | ) |  | (193 | ) |  | 141 |  |  | (593 | )
2011 |  | (593 | ) |  | (12 | ) |  | 141 |  |  | (464 | )
(a) We record a bad debt provision based upon historical experience and a review of individual customer balances. (b) When an individual customer balance becomes impaired and is deemed uncollectible a deduction is made against the allowance for uncollectible accounts. Years Ended December 31, 2011, 2010 and 2009 (In thousands)
Description |  | Balance at Beginning of Year |  | Additions Charged to Costs and Expenses (c) |  | Deduction |  | Balance at End of Year
TAX VALUATION ALLOWANCE: |  |  |  |  |  |  |  |  |  |  |  |
2009 |  | — |  |  | — |  |  | — |  |  | — |
2010 |  | — |  |  | — |  |  | — |  |  | — |
2011 |  | — |  |  | (361 | ) |  | — |  |  | (361 | )
(c) We record a valuation allowance against a deferred tax asset when it is determined that it is more likely than not that the deferred tax asset will not be realized.

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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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