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Carrying value as of the balance sheet date of dividends declared but unpaid on equity securities issued by the entity and outstanding.

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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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- Definition

Amount of cost to be recognized for nonvested award under share-based payment arrangement. Excludes share and unit options.

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- Definition

The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.

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- Definition

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 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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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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No definition available.

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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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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

No definition available.

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The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

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Fair value of share-based awards for which the grantee gained the right by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash.

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The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.

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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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No definition available.

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Number of shares authorized for issuance under share-based payment arrangement.

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Amount of cost expensed and capitalized for award under share-based payment arrangement.

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Stock-Based Compensation Plan (Details) - The 2018 LTIP - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020	May 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized (in shares)	38,525		38,525			150,000
Compensation expense	$ 232,000	$ 170,000	$ 417,000	$ 304,000
Accrued dividends	$ 55,600		$ 55,600		$ 50,800
Restricted stock units awards
Number of Shares
Unit awards, beginning balance (in shares)			27,490
Granted (in shares)			26,369
Vested (in shares)			(14,244)
Forfeited (in shares)			(764)
Unit awards, ending balance (in shares)	38,851		38,851
Weighted Average Grant Date Fair Value per Share
Unit awards, beginning balance (in dollars per share)			$ 28.64
Granted (in dollars per share)			29.70
Vested (in dollars per share)			30.20
Forfeited (in dollars per share)			28.71
Unit awards, ending balance (in dollars per share)	$ 28.79		$ 28.79
Aggregate grant date fair value awards issues			$ 800,000
Unrecognized compensation cost	$ 700,000		$ 700,000
Period for recognition for remaining compensation cost			1 year 6 months
Restricted stock units awards \| Minimum
Weighted Average Grant Date Fair Value per Share
Granted (in dollars per share)			$ 29.70
Restricted stock units awards \| Maximum
Weighted Average Grant Date Fair Value per Share
Granted (in dollars per share)			$ 30.00
Performance share unit awards
Number of Shares
Unit awards, beginning balance (in shares)			16,241
Granted (in shares)			12,205
Vested (in shares)			(2,461)
Forfeited (in shares)			0
Unit awards, ending balance (in shares)	25,985		25,985
Weighted Average Grant Date Fair Value per Share
Unit awards, beginning balance (in dollars per share)			$ 27.67
Granted (in dollars per share)			29.70
Vested (in dollars per share)			43.00
Forfeited (in dollars per share)			0
Unit awards, ending balance (in dollars per share)	$ 27.17		$ 27.17
Aggregate grant date fair value awards issues			$ 400,000
Performance factor			100000.00%
Unrecognized compensation cost	$ 500,000		$ 500,000
Period for recognition for remaining compensation cost			2 years 6 months