Income Taxes - Unrecognized Tax Benefits (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Balances at beginning of the year	$ 1,614	$ 1,614
Additions based on tax position related to current year	0	0
Additions based on tax positions related to prior years	0	0
Reductions based on tax positions related to current year	0	0
Reductions based on tax positions related to prior years	0	0
Settlements with tax authorities	0	0
Lapse of statute of limitations	0	0
Balance at the end of year	$ 1,614	$ 1,614

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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Amount of unrecognized tax benefits.

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

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