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Summary of Significant Accounting Policies (Narrative) (Details) - USD ($) $ in Thousands		12 Months Ended
	Dec. 14, 2018	Dec. 31, 2018
Percentage holding required to account investments under non-marketable equity investments		20.00%
Percentage of dividend	20.00%
Maximum [Member]
Range of total assets and liabilities expected to be added to balance sheet from adoption of ASU No. 2016-02 - Leases		$ 11,000
Minimum [Member]
Range of total assets and liabilities expected to be added to balance sheet from adoption of ASU No. 2016-02 - Leases		$ 9,000
Building [Member] | Maximum [Member]
Estimated useful lives		40 years
Leasehold Improvements [Member] | Minimum [Member]
Estimated useful lives		10 years
Software, Equipment, Furniture and Fixtures [Member] | Maximum [Member]
Estimated useful lives		7 years
Software, Equipment, Furniture and Fixtures [Member] | Minimum [Member]
Estimated useful lives		3 years

X

- Definition

Range of total assets and liabilities expected to be added to balance sheet from adoption of ASU No. 2016-02 - Leases.

+ References

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+ Details

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- Definition

The percentage holding required to account investments under non-marketable equity investments.

+ References

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- Definition

The percentage rate used to calculate dividend payments on preferred stock.

+ References

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- Definition

Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

+ References

No definition available.

+ Details

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