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Income Taxes (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Tax [Line Items]
Operating loss carryforwards	$ 95,932
Accrued income taxes		$ 63
Prepaid income taxes	4
Interest expense related to unrecognized tax benefits	0	$ 0	$ 79
Income tax examination, estimate of possible loss			$ 4,683
Capital Loss Carryforward [Member]
Income Tax [Line Items]
Tax credit carryforward	$ 132,656

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- Definition

Income Tax [Line Items]

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No definition available.

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- Definition

Carrying amount as of the balance sheet date of the unpaid sum of the known and estimated amounts payable to satisfy all currently due domestic and foreign income tax obligations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
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-Subparagraph (SX 210.5-02.20)
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-Publisher SEC
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Estimated amount of loss resulting from an adverse tax position.

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-Publisher FASB
-Name Accounting Standards Codification
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Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.

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Amount of asset related to consideration paid in advance for income and other taxes that provide economic benefits within a future period of one year or the normal operating cycle, if longer.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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The amount of the tax credit carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.

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Amount of interest expense for an underpayment of income taxes.

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