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Summary Of Significant Accounting Policies (Allowance for Doubtful Accounts) (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011
Allowance for Doubtful Accounts Receivable [Roll Forward]
Balance, beginning of the year	$ 203	$ 0
Additions to allowance	25	0
Balance, quarter ended	$ 228	$ 0

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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