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Assets Held for Sale and Discontinued Operations - Discontinued Operations Related to Net Loss (Income) Related to Noncontrolling Interest (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Assets Held for Sale and Discontinued Operations [Abstract]
Loss (income) from continuing operations	$ 1,296us-gaap_IncomeLossFromContinuingOperationsAttributableToNoncontrollingEntity	$ 870us-gaap_IncomeLossFromContinuingOperationsAttributableToNoncontrollingEntity	$ (385)us-gaap_IncomeLossFromContinuingOperationsAttributableToNoncontrollingEntity
(Income) from discontinued operations	(717)us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToNoncontrollingInterest	(672)us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToNoncontrollingInterest	(739)us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToNoncontrollingInterest
Net loss (income)	$ 579us-gaap_NetIncomeLossAttributableToNoncontrollingInterest	$ 198us-gaap_NetIncomeLossAttributableToNoncontrollingInterest	$ (1,124)us-gaap_NetIncomeLossAttributableToNoncontrollingInterest

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- Definition

Amount of income (loss) from continuing operations attributable to the noncontrolling interest. Also defined as revenue less expenses and taxes from ongoing operations before extraordinary items but after deduction of those portions of income or loss from continuing operations that are allocable to noncontrolling interests.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 810

-SubTopic 10

-Section 45

-Paragraph 19

-URI http://asc.fasb.org/extlink&oid=7656940&loc=SL4569616-111683



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-Section 45

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- Definition

This element represents the overall income (loss) from a disposal group that is classified as a component of the entity, net of income tax, reported as a separate component of income before extraordinary items, which is apportioned to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This item includes the following (net of tax): income (loss) from operations during the phase-out period, gain (loss) on disposal, provision (or any reversals of earlier provisions) for loss on disposal, and adjustments of a prior period gain (loss) on disposal.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 810

-SubTopic 10

-Section 45

-Paragraph 19

-URI http://asc.fasb.org/extlink&oid=7656940&loc=SL4569616-111683



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Amount of Net Income (Loss) attributable to noncontrolling interest.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 810

-SubTopic 10

-Section 50

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-URI http://asc.fasb.org/extlink&oid=18733093&loc=SL4573702-111684



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