Income Taxes - Summary of Income Tax Contingencies (Details) - USD ($) $ in Thousands	12 Months Ended
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, opening balance	$ 2,947	$ 2,749	$ 2,549
Gross increases (decreases) in tax positions taken in a prior year		35	80
Gross decreases in tax positions taken in a prior year	(244)
Gross increases in tax positions taken in the current year	229	586	403
Lapse of applicable statute of limitations	(771)	(423)	(283)
Unrecognized tax benefits, ending balance	$ 2,161	$ 2,947	$ 2,749

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.

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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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