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Summary of Significant Accounting Policies Allowance for Uncollectible Accounts Receivable (Details) (USD $)
In Thousands, unless otherwise specified |
12 Months Ended | ||
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Dec. 31, 2011
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Dec. 31, 2010
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Dec. 31, 2009
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| Schedule of Change in Allowance for Uncollectible Accounts Receivable | |||
| Beginning balance, allowance for uncollectible accounts receivable | $ 2,494 | $ 2,045 | $ 4,106 |
| Provision, charged to expense | 518 | 2 | 199 |
| Provision, direct reduction to revenue and other accounts | 104 | 602 | 595 |
| Deductions to provision | (2,515) | (155) | (2,855) |
| Ending balance, allowance for uncollectible accounts receivable | $ 601 | $ 2,494 | $ 2,045 |
| X | ||||||||||
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- Definition
Direct write-downs of receivables changed against the allowance for doubtful accounts. No definition available.
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- Definition
Charge net with revenue for receivables that are expected to be uncollectible. No definition available.
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- Definition
A valuation allowance for trade and other receivables due to an Entity within one year (or the normal operating cycle, whichever is longer) that are expected to be uncollectible. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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- Definition
Amount of the current period expense charged against operations, the offset which is generally to the allowance for doubtful accounts for the purpose of reducing receivables, including notes receivable, to an amount that approximates their net realizable value (the amount expected to be collected). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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