Restricted Stock Award Vesting After Year Three, Percent

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- Definition

Restricted Stock Award Vesting After Year Two, Percent

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- Definition

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

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- Definition

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

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- Definition

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

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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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- Definition

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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- Definition

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

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- Definition

Number of options outstanding, including both vested and non-vested options.

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- Definition

Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Incentive and Restricted Stock Plan and Dividend Reinvestment Plan - Additional Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation expense to be recognized	$ 3.6
Weighted average compensation expense recognize period	1 year 9 months 7 days
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense	$ 2.4	$ 1.9	$ 3.0
Tax benefit realized on compensation expense	$ 0.5	$ 0.4	$ 1.1
2014 Stock Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum number of common stock authorized (in shares)	750,000
Stock plan expiration period	10 years
Number of nonstatutory stock options outstanding (in shares)	0
2014 Stock Plan \| Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted shares granted (in shares)	84,882	75,997
2014 Stock Plan \| Restricted Stock \| Employees and Directors
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted shares granted (in shares)	529,933
2014 Stock Plan \| Restricted Stock \| Outside Directors
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted shares granted (in shares)	11,231	9,264	12,728
Awards vesting period	1 year
LTIP \| Time-based and Performance-based Restricted Stocks \| Senior Management
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted shares granted (in shares)	73,651	66,733	77,387
LTIP \| Time-based Restricted Shares \| Senior Management
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock award vesting after year two, percent	50.00%
Restricted stock award vesting after year three, percent	50.00%
LTIP \| Performance-based Restricted Shares \| Senior Management
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards vesting period	3 years