Income Taxes - Unrecognized Tax Benefits (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020
Unrecognized tax benefits
Unrecognized tax benefits, beginning of year	$ 11,318	$ 6,773
Tax positions taken during the current year - Increases	3,973	4,521
Tax positions taken during a prior year - Increases	262	962
Tax positions taken during a prior year - Decreases	(1,064)
Decreases for settlements during the period	(74)	(235)
Reductions for lapses of applicable statute of limitations	(307)	(703)
Unrecognized tax benefits, end of year	14,108	11,318
Amount of unrecognized tax benefit, if recognized, that would affect the effective tax rate	14,108	11,318
Interest accrued on unrecognized tax benefit	0	46
Penalties accrued on unrecognized tax benefit	$ 0	$ 0

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 taken in prior period tax returns.

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Amount of statutory penalties accrued for a tax position claimed or expected to be claimed by the entity, in its tax return.

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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 interest expense accrued for an underpayment of income taxes.

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