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Income Taxes (Significant Valuation Allowances) (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Tax Credit Carryforward [Line Items]
Valuation allowance	$ 14,455	$ 12,434
United States
Tax Credit Carryforward [Line Items]
Valuation allowance	12,300	10,100
Domestic Tax Authority | United States
Tax Credit Carryforward [Line Items]
Valuation allowance	4,240	3,040
State and Local Jurisdiction | United States
Tax Credit Carryforward [Line Items]
Valuation allowance	8,057	7,092
Capital Loss Carryforward | Israel
Tax Credit Carryforward [Line Items]
Valuation allowance	$ 1,457	$ 1,622

X

- Definition

Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32537-109319

+ Details

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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.

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