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Marketable Equity Securities - Marketable Equity Securities and Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Investments [Abstract]
Marketable equity securities at fair value	$ 188	$ 2,308
Cost	91	1,870
Accumulated other comprehensive (loss) income for unrealized holding gains	$ 97	438
Deferred taxes on accumulated other comprehensive income for unrealized holding gains		(1,558)
Accumulated other comprehensive income (loss)	$ 97	$ (1,120)

X

- Definition

Accumulated appreciation or loss, net of tax, in value of the total of available-for-sale securities at the end of an accounting period.

+ References

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



-Publisher FASB



-Name Accounting Standards Codification



-Topic 220



-SubTopic 10



-Section 45



-Paragraph 14A



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- Definition

Amount before tax of unrealized gain (loss) in accumulated other comprehensive income (AOCI) on investments in debt and equity securities classified as available-for-sale.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from unrealized losses in other comprehensive income.

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



-Publisher FASB



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Cost of the investment.

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- Definition

Fair value portion of investment securities, including, but not limited to, marketable securities, derivative financial instruments, and investments accounted for under the equity method.

+ References

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



-Publisher FASB



-Name Accounting Standards Codification



-Glossary Trading Securities



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-Name Regulation S-X (SX)



-Number 210



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