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Share-Based Compensation - Summary of Stock Compensation Expense (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Total share-based compensation (benefit) - stock options	$ 0	$ 7
Income tax benefit (expense)	0	2
Unrecognized compensation expense	$ 0	$ 0
Weighted-average amortization period remaining	0 years	0 years
Restricted Shares
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Total share-based compensation - restricted stock	$ 2,966	$ 2,019
Income tax benefit	826	562
Unrecognized compensation expense	$ 7,840	$ 5,566
Weighted-average amortization period remaining	2 years 4 months 24 days	2 years 4 months 24 days

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- Definition

Allocated share based compensation expense (benefit).

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Employee service share based compensation tax benefit expense from compensation expense.

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Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Amount of cost not yet recognized for nonvested award under share-based payment arrangement.

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Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Amount of tax benefit for recognition of expense of award under share-based payment arrangement.

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