Significant Accounting Policies (Details 3) - USD ($) $ in Thousands	9 Months Ended
Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
Investment in Marketable Securities
Marketable securities	$ 46,432		$ 39,429
Cost basis	39,700		32,400
Proceeds from sale of marketable securities	432	$ 3,669
Equity marketable securities
Investment in Marketable Securities
Marketable securities	4,115		4,332
Mortgage-backed securities
Investment in Marketable Securities
Marketable securities	42,317		35,097
Fair Value
Investment in Marketable Securities
Marketable securities	$ 46,432		$ 39,429

Proceeds from Sale and Maturity of Marketable Securities, Net of Transaction Costs

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- 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)

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 320

-SubTopic 10

-Section 50

-Paragraph 5

-Subparagraph (aa)

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 320

-SubTopic 10

-Section 45

-Paragraph 1

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+ 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)

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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