Number Of Other Senior Executive Officers Granted Stock

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Number Of Senior Executive Officers Granted Stock

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Period Of Transition To Advisory Service Role Upon Retirement

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Share-Based Compensation Arrangement By Share-Based Payment Award, Equity Instruments Other Than Options, Grants In Period, Net Of Forfeitures

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

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

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

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

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Percentage of vesting of award under share-based payment arrangement.

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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) $ in Millions		12 Months Ended			84 Months Ended
	Oct. 02, 2020 USD ($) shares	Dec. 31, 2020 USD ($) seniorExecutiveOfficer shares	Dec. 31, 2019 USD ($) shares	Dec. 31, 2018 USD ($) shares	Dec. 31, 2020 USD ($) seniorExecutiveOfficer shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation expense to be recognized \| $		$ 4.2			$ 4.2
Weighted average compensation expense recognize period (in years)		2 years 1 month 28 days
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense \| $		$ 0.7	$ 2.4	$ 1.9
Tax benefit realized on compensation expense \| $		$ 0.2	$ 0.5	$ 0.4
2014 Stock Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum number of common stock authorized (in shares)		750,000			750,000
Stock plan expiration period (in years)		10 years
Number of nonstatutory stock options outstanding (in shares)		0			0
2014 Stock Plan \| Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted shares granted (in shares)		230,703	84,882		760,636
Forfeited (in shares)		58,741	33,228		136,896
Grants in period (in shares)					623,740
2014 Stock Plan \| Restricted Stock \| Outside Directors
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted shares granted (in shares)		23,153	11,231	9,264
Awards vesting period (in years)		1 year
LTIP \| Restricted Stock \| Other Executive Officers \| Tranche One
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock award vesting (as a percent)		33.00%
LTIP \| Restricted Stock \| Other Executive Officers \| Tranche Two
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock award vesting (as a percent)		33.00%
LTIP \| Restricted Stock \| Other Executive Officers \| Tranche Three
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock award vesting (as a percent)		34.00%
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)		207,550	73,651	66,733
LTIP \| Time-based and Performance-based Restricted Stocks \| Senior Executive Officers
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted shares granted (in shares)		83,669
Number of senior executive officers granted stock \| seniorExecutiveOfficer		3			3
LTIP \| Time-based and Performance-based Restricted Stocks \| Other Executive Officers
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted shares granted (in shares)		62,753
Compensation expense \| $		$ 1.3
Number of other senior executive officers granted stock \| seniorExecutiveOfficer		2			2
LTIP \| Time-based Restricted Shares \| Senior Management \| Tranche One
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards vesting period (in years)		2 years
Restricted stock award vesting (as a percent)		50.00%
LTIP \| Time-based Restricted Shares \| Senior Management \| Tranche Two
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards vesting period (in years)		1 year
Restricted stock award vesting (as a percent)		50.00%
LTIP \| Performance-based Restricted Shares \| Senior Management
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards vesting period (in years)		3 years
Modified 2014 Stock Plan \| Chief Executive Officer
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Period of transition to advisory service role upon retirement	3 years
Modified 2014 Stock Plan \| Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Forfeited (in shares)	20,916
Compensation expense \| $	$ (0.3)