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Equity - Restricted Stock and Performance-based Stock Units (Details) - USD ($)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Restricted stock and performance-based stock units
Restricted stock and performance based stock units activity
Granted (in shares)	232,887	221,542	182,240
Compensation expense
Remaining compensation expense	$ 9,620,000
Restricted stock and performance-based stock units | 2024
Compensation expense
Remaining compensation expense	6,026,000
Restricted stock and performance-based stock units | 2025
Compensation expense
Remaining compensation expense	3,238,000
Restricted stock and performance-based stock units | 2026
Compensation expense
Remaining compensation expense	$ 356,000
Restricted stock
Restricted stock and performance based stock units activity
Outstanding at the beginning of the period (in shares)	229,236	197,422	180,440
Granted (in shares)	146,020	135,210	110,348
Vested (in shares)	(115,551)	(103,396)	(93,366)
Canceled (in shares)	(1,085)
Outstanding at the end of the period (in shares)	258,620	229,236	197,422
Restricted stock | Grant Date Price $37.16 | Three year vesting
Restricted stock and performance based stock units activity
Granted (in shares)	127,960
Granted (in dollars per share)	$ 37.16
Vesting period	3 years
Restricted stock | Grant Date Price $31.54 | Vesting Date May 24,2024
Restricted stock and performance based stock units activity
Granted (in shares)	15,060
Granted (in dollars per share)	$ 31.54
Restricted stock | Grant Date Price 35.45 | Vesting Date July 25, 2024
Restricted stock and performance based stock units activity
Granted (in shares)	3,000
Granted (in dollars per share)	$ 35.45
Restricted stock | Grant Date Price $33.94 | Three year vesting
Restricted stock and performance based stock units activity
Granted (in shares)		122,865
Granted (in dollars per share)		$ 33.94
Vesting period		3 years
Restricted stock | Grant Date Price $38.48 | Vesting Date, May 25, 2023
Restricted stock and performance based stock units activity
Granted (in shares)		12,345
Granted (in dollars per share)		$ 38.48
Restricted stock | Grant Date Price $42.27 | Three year vesting
Restricted stock and performance based stock units activity
Granted (in shares)			95,293
Granted (in dollars per share)			$ 42.27
Vesting period			3 years
Restricted stock | Grant Date Price $39.40 | Vesting Date, May 26, 2022
Restricted stock and performance based stock units activity
Granted (in shares)			12,055
Granted (in dollars per share)			$ 39.40
Restricted stock | Grant Date Price $43.14 | Vesting Date, April 1, 2022
Restricted stock and performance based stock units activity
Granted (in shares)			3,000
Granted (in dollars per share)			$ 43.14
Performance-based stock units
Restricted stock and performance based stock units activity
Outstanding at the beginning of the period (in shares)		0
Granted (in shares)	86,867	86,332	71,892
Vested (in shares)	0	0	(108,720)
Outstanding at the end of the period (in shares)			0
Compensation expense
Compensation expense related to share-based award	$ 8,481,000	$ 7,964,000	$ 7,760,000
Performance-based stock units | Grant Date Price $37.16 | TSR Targets
Restricted stock and performance based stock units activity
Granted (in shares)	86,867
Granted (in dollars per share)	$ 37.16
Vesting period	4 years
Performance-based stock units | Grant Date Price $37.16 | Accelerated TSR Targets
Restricted stock and performance based stock units activity
Vesting period	3 years
Performance-based stock units | Grant Date Price $33.94 | TSR Targets
Restricted stock and performance based stock units activity
Granted (in shares)		86,332
Granted (in dollars per share)		$ 33.94
Performance-based stock units | Grant Date Price $42.27 | TSR Targets
Restricted stock and performance based stock units activity
Granted (in shares)			71,892
Granted (in dollars per share)			$ 42.27

X

- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
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Amount of cost to be recognized for nonvested award under share-based payment arrangement. Excludes share and unit options.

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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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The number of grants made 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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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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The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

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Number of shares under non-option equity instrument agreements that were cancelled as a result of occurrence of a terminating event.

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