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Stock-Based Compensation - Restricted Shares (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share based award vesting period	5 years
Shares
Nonvested at the beginning of the period (in shares)	25,000	79,560	81,608
Granted (in shares)	98,921	94,654	117,279
Vested (in shares)	(123,921)	(138,635)	(119,327)
Forfeited or unearned (in shares)	0	(10,579)	0
Nonvested at the end of the period (in shares)	0	25,000	79,560
Weighted-Average Grant-Date Fair Value
Nonvested at the beginning of the period, weighted-average grant-date fair value (in usd per share)	$ 7.23	$ 8.08	$ 8.35
Granted, weighted-average grant-date fair value (in usd per share)	7.56	9.03	8.34
Vested, weighted-average grant-date fair value (in usd per share)	7.49	8.91	8.52
Forfeited or unearned, weighted-average grant-date fair value (in usd per share)	0	8.99	0
Nonvested at the end of the period, weighted-average grant-date fair value (in usd per share)	$ 0	$ 7.23	$ 8.08
Restricted stock | Class A Non-Voting
Weighted-Average Grant-Date Fair Value
Share-based compensation expense	$ 825,000	$ 906,000	$ 942,000
Unearned compensation cost	$ 0

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- Definition

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

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Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

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Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event.

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The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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Per share or unit weighted-average fair value of nonvested award under share-based payment arrangement. Excludes share and unit options.

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