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Investments (Details Textual) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2012 Contract	Jun. 30, 2011 Contract	Jun. 30, 2012 Contract	Jun. 30, 2011 Contract
Investments (Textual) [Abstract]
Gross realized gains and losses from equity option contracts		$ 22,000		$ 73,000
Net Proceeds from Equity Option Contracts		$ 22,000		$ 73,000
Option Contract at Balance Sheet Date		0		0
Number of Option Contract held during the year	0		0

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- Definition

Number of derivative instrument held during year.

+ References

No definition available.

+ Details

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- Definition

This item represents, as of the balance sheet date; the difference between the gross gains and losses in accumulated other comprehensive income, a separate component of shareholders' equity, for any derivatives that hedged the forecasted acquisition of available-for-sale securities.

+ References

No definition available.

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- Definition

The number of derivative instruments of a particular group held by the entity.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 1A

-Subparagraph (d)

-URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5579245-113959



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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 1B

-URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5580258-113959

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- Definition

The cash inflow provided by derivative instruments during the period, which are classified as investing activities, excluding those designated as hedging instruments.

+ References

No definition available.

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