Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2012

Fair Value Measurements [Abstract]

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

				Fair Value Measurements at
				Reporting Date Using
				Quoted Prices in		Significant
				Active Markets		Other		Significant
				for Identical		Observable		Unobservable
		December 31,		Assets		Inputs		Inputs
		2012		(Level 1)		(Level 2)		(Level 3)
		In thousands
Assets
Domestic money market funds	$	58,620	$	58,620	$	-	$	-
Non domestic bank certificates of deposit		26,045		26,045		-		-
Cash equivalents at fair value		84,665		84,665		-		-
Total Assets	$	84,665	$	84,665	$	-	$	-

				Fair Value Measurements at
				Reporting Date Using
				Quoted Prices in		Significant
				Active Markets		Other		Significant
				for Identical		Observable		Unobservable
		December 31,		Assets		Inputs		Inputs
		2011		(Level 1)		(Level 2)		(Level 3)
		In thousands
Assets
Domestic money market funds	$	42,273	$	42,273	$	-	$	-
Non domestic bank certificates of deposit		22,520		22,520		-		-
Cash equivalents at fair value		64,793		64,793		-		-
Total Assets	$	64,793	$	64,793	$	-	$	-
Liabilities
IDSI acquisition short-term note	$	(945)	$	-	$	(945)	$	-
Total current maturities of other long-term debt		(945)		-		(945)		-
Total Liabilities	$	(945)	$	-	$	(945)	$	-