Income Taxes Income Tax Contingency (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Unrecognized tax benefits at January 1,	$ 7,471	$ 10,124	$ 8,557
Tax positions, current period	495	543	3,472
Tax positions, prior period	(361)	(304)
Tax positions, prior period			180
Settlements with taxing authorities	(18)	(2,207)	(1,154)
Lapse of applicable statute of limitations	(286)	(685)	(931)
Unrecognized tax benefits at December 31,	$ 7,301	$ 7,471	$ 10,124

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Amount of unrecognized tax benefits.

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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 decrease in unrecognized tax benefits resulting from settlements with taxing authorities.

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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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Amount of decrease in unrecognized tax benefits resulting from lapses of applicable statutes of limitations.

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