Summary Of Significant Accounting Policies (Allowance for Doubtful Accounts) (Details) (USD $)
In Thousands, unless otherwise specified

9 Months Ended

Sep. 30, 2013

Sep. 30, 2012

Accounting Policies [Abstract]

Allowance for doubtful accounts [Table Text Block]

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

	September 30, 2012		September 30, 2013
Balance, beginning of the year	$	203	$	240
Additions to allowance	12		4
Write-offs	—		(212		)
Recoveries	—		(1		)
Balance, quarter ended	$	215	$	31

Allowance for Doubtful Accounts Receivable [Roll Forward]

Balance, beginning of the year

$ 240

$ 203

Provision for Doubtful Accounts

4

12

Allowance for Doubtful Accounts Receivable, Charge-offs

(212)

0

Valuation Allowances and Reserves, Recoveries

1

0

Balance, quarter ended

$ 31

$ 215