Income Taxes - Components of Income Tax Contingencies (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Beginning unrecognized tax benefit	$ 0	$ 0	$ 0
Additions for tax positions of prior years	616	0	0
Reductions for tax positions of prior years	0	0	0
Lapse of statute of limitations	(122)	0	0
Decrease due to settlement with taxing authorities	0	0	0
Ending unrecognized tax benefit	$ 494	$ 0	$ 0

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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 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 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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