Income Taxes (Other Unrecognized Tax Benefits Disclosures) (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2018	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate	$ 5,283	$ 4,107
Interest, net of tax benefit, accrued in the Consolidated Balance Sheets	1,027	572
Penalties, accrued in the Consolidated Balance Sheets	43	38
Interest expense recognized in the Consolidated Statements of Operations	523	506
Penalties expense (benefit) recognized in the Consolidated Statements of Operations	$ 5	$ (67)

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- Definition

Amount of statutory penalties accrued for a tax position claimed or expected to be claimed by the entity, in its tax return.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 15
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32718-109319

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- Definition

Amount of expense for penalties related to a tax position claimed or expected to be claimed in the tax return.

+ References

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- Definition

Amount of interest expense accrued for an underpayment of income taxes.

+ References

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- Definition

Amount of interest expense for an underpayment of income taxes.

+ References

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- Definition

The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 15A
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=84230637&loc=SL6600010-109319

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