Equity Compensation Restricted Stock Units (Details) - Restricted Stock Units (RSUs) [Member]	12 Months Ended
Dec. 31, 2021 $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	3 years
2019 Service Year [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted Stock Units outstanding	18,899
RSUs unearned but vested	12,683
RSUs unearned and not yet vested	6,216
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instrument Other than Option, Nonvested, Intrinsic Value \| $ / shares	$ 10.77
Target number of PSUs granted:	27,760
Calculated fair value per PSU \| $ / shares	$ 298,975
share based compensation awards forfeited	(8,861)
2018 Service Year [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted Stock Units outstanding	12,446
RSUs unearned but vested	12,446
RSUs unearned and not yet vested	0
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instrument Other than Option, Nonvested, Intrinsic Value \| $ / shares	$ 16.66
Target number of PSUs granted:	20,720
Calculated fair value per PSU \| $ / shares	$ 345,195
share based compensation awards forfeited	(8,274)
2021 Service Year
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted Stock Units outstanding	18,400
RSUs unearned but vested	0
RSUs unearned and not yet vested	18,400
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instrument Other than Option, Nonvested, Intrinsic Value \| $ / shares	$ 10.69
Target number of PSUs granted:	20,600
Calculated fair value per PSU \| $ / shares	$ 220,214
share based compensation awards forfeited	(2,200)
2020 Service Year
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted Stock Units outstanding	15,500
RSUs unearned but vested	5,188
RSUs unearned and not yet vested	10,312
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instrument Other than Option, Nonvested, Intrinsic Value \| $ / shares	$ 9.47
Target number of PSUs granted:	21,400
Calculated fair value per PSU \| $ / shares	$ 202,658
share based compensation awards forfeited	(5,900)

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

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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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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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