Fair Value Measurements Fair Value Measuements (Tables)

12 Months Ended

Dec. 31, 2011

Fair Value Disclosures [Abstract]

Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]

Our financial assets and liabilities carried at fair value measured on a recurring basis as of December 31, 2011 and 2010, consisted of the following (in thousands):

			Fair Value Measurements Using
	Total Fair		Quoted prices in		Significant other		Significant
	Value at		active markets		observable inputs		Unobservable inputs
Description	December 31, 2011		(Level 1)		(Level 2)		(Level 3)
Marketable securities (1)	$	2,798	$	2,798	$	—	$	—
			Fair Value Measurements Using
	Total Fair		Quoted prices in		Significant other		Significant
	Value at		active markets		observable inputs		Unobservable inputs
Description	December 31, 2010		(Level 1)		(Level 2)		(Level 3)
Interest rate swap (2)	$	1,159	$	—	$	1,159	$	—