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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, 2013

Jun. 30, 2012

Accounting Policies [Abstract]

Allowance for doubtful accounts [Table Text Block]

Balance sheet details are as follows, (in thousands):



	June 30, 2012		June 30, 2013
Balance, beginning of the year	$	203	$	240
Additions to allowance	25		3
Write-offs	—		(213		)
Recoveries	—		(8		)
Balance, quarter ended	$	228	$	22

Allowance for Doubtful Accounts Receivable [Roll Forward]

Balance, beginning of the year

$ 240

$ 203

Provision for Doubtful Accounts

Allowance for Doubtful Accounts Receivable, Charge-offs

(213)

Valuation Allowances and Reserves, Recoveries

Balance, quarter ended

$ 22

$ 228

- 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).

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