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Receivable Provisions Net of Recoveries (Details) (USD $) In Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Receivable Provisions, Net of Recoveries [Abstract]
Accounts receivable provisions, net of recoveries	$ 151	$ 16	$ 270	$ 10
Financing receivables, net of recoveries		337	89	356
Receivable provisions, net of recoveries	$ 151	$ 353	$ 359	$ 366

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).

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- Definition

The sum of the periodic provision charged to earnings, based on an assessment of uncollectibility from the counterparty on account of loan, lease or other credit losses, to reduce these accounts to the amount that approximates their net realizable value.

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