Income Taxes (Narrative) (Details) - USD ($)	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Taxes [Abstract]
Statutory rate	21.00%	21.00%	35.00%
Increase in income tax provison from revaluation of net deferred tax assets		$ 534,000
Gross unrecognized tax benefits	$ 2,237,000	320,000	$ 459,000
Income tax related interest and penalties included in tax expense	$ 298,000	$ 14,000	$ 17,000

Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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The sum of the amounts of estimated penalties and interest recognized in the period arising from income tax examinations.

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Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations, attributable to increase (decrease) in the income tax rates.

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Amount of unrecognized tax benefits.

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