Income Taxes (Unrecognized Tax Benefits) (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
Mar. 31, 2019	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Unrecognized tax benefits beginning balance	$ 6,406	$ 6,406	$ 5,112	$ 4,071
Gross increase for tax positions of prior years		0	279	66
Gross decrease for tax positions of prior years		(12)	(227)	0
Gross increase for tax positions of current year	$ 1,399	1,384		1,101
Lapse of statute of limitations		0	(157)	(126)
Total unrecognized tax benefits		$ 7,778	$ 6,406	$ 5,112

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

No definition available.

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- Definition

Amount of unrecognized tax benefits.

+ References

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Amount of decrease in unrecognized tax benefits resulting from tax positions taken in prior period tax returns.

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Amount of increase in unrecognized tax benefits resulting from tax positions that have been or will be taken in current period tax return.

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Amount of increase in unrecognized tax benefits resulting from tax positions taken in prior period tax returns.

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