Accounts Receivable (Impact Of Allowance For Doubtful Accounts On The Gross Trade Accounts Receivable Balances) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Accounts Receivable [Abstract]
Balance at beginning of period	$ (1)	$ (3)	$ (4)
Anchen opening balance	(100)
Additions - charge to expense		(5)	8
Adjustments and/or deductions	1	7	(7)
Balance at end of period	$ (100)	$ (1)	$ (3)