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Available-For-Sale Marketable Securities (Available-For-Sale Marketable Securities) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Schedule of Available-For-Sale Securities [Line Items]
Amortized cost	$ 50,789	$ 49,329
Gross unrealized gains	408	786
Gross unrealized losses	(121)	(4)
Available-for-sale securities Fair value	51,076	50,111
Government Debentures - Fixed And Floating Interest Rate [Member]
Schedule of Available-For-Sale Securities [Line Items]
Amortized cost	5,849	12,428
Gross unrealized gains	70	192
Gross unrealized losses
Available-for-sale securities Fair value	5,919	12,620
Corporate Debenture - Fix And Floating Interest Rate [Member]
Schedule of Available-For-Sale Securities [Line Items]
Amortized cost	44,940	36,901
Gross unrealized gains	338	594
Gross unrealized losses	(121)	(4)
Available-for-sale securities Fair value	$ 45,157	$ 37,491

X

- Definition

Amount of accumulated pre-tax unrealized gains before deducting pre-tax unlrealized gain on investments in available-for-sale securities impacting investments.

+ References

No definition available.

+ Details

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X

- Definition

Amount of accumulated pre-tax unrealized loss before deducting pre-tax unlrealized gain on investments in available-for-sale securities impacting investments.

+ References

No definition available.

+ Details

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X

- Definition

Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 320

-SubTopic 10

-Section 25

-Paragraph 1

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=28360136&loc=d3e22054-111558



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 320

-SubTopic 10

-Section 50

-Paragraph 5

-Subparagraph (aa)

-URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27232-111563



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 320

-SubTopic 10

-Section 45

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6871852&loc=d3e26610-111562

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X

- Definition

This item represents the cost of debt and equity securities, which are categorized neither as held-to-maturity nor trading, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.2)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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