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Marketable Securities (Tables)

12 Months Ended

Dec. 31, 2012

Marketable Securities [Abstract]

Held-To-Maturity Securities

						Gross				Gross
						unrealized				unrealized
		Aggregate				holding				holding				Aggregate
		cost basis**				gains				(losses)				fair value*
		US$ thousands
At December 31, 2011
Held to maturity:
Corporate debt securities and
government debt securities
Current			9,108				5				(100	)			9,013
Non-Current			23,911				-				(452	)			23,459
			33,019				5				(552	)			32,472
At December 31, 2012
Held to maturity:
Corporate debt securities and
government debt securities
Current			12,702				23				(56	)			12,669
Non-Current			28,775				193				(126	)			28,842
			41,477				216				(182	)			41,511

*         Fair value is being determined using quoted market prices in active markets (Level 1).

** Including accrued interest in the amount of $325K and $425K as of December 31, 2011 and 2012 respectively.

Schedule Of Debt Securities By Major Interest Type

		December 31, 2011
						Net unrealized
		Amortized cost				holding gains/(losses)				Fair value
		US$ thousands
Up to 2%			25,225				(415	)			24,810
2.038% - 2.874%			7,794				(132	)			7,662
			33,019				(547	)			32,472

		December 31, 2012
						Net unrealized
		Amortized cost				holding gains/(losses)				Fair value
		US$ thousands
Up to 2%			33,145				(84	)			33,061
2.038% - 2.951%			8,332				118				8,450
			41,477				34				41,511

Schedule Of Reconciliation Of Marketable Securities [Table Text Block]

		US$ thousands
Balance at January 1, 2012			33,019
Purchases of marketable securities			17,992
Discount of marketable securities			(579	)
Proceeds from maturity of marketable securities			(8,955	)
Balance at December 31, 2012			41,477

Summary Of Investment Securities In An Unrealized Loss Position

		Less than 12 months								12 months or more								Total
Held to maturity		Unrealized Losses				Fair value				Unrealized Losses				Fair value				Unrealized Losses				Fair value
Corporate debt securities
and government debt
securities			(106	)			6,803				(76	)			10,701				(182	)			17,504

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Tabular disclosure of all investments in certain debt and equity securities for which the entity has the positive intent and ability to hold until maturity.

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