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Land and Development (Acquisitions, Dispositions, Impairments) (Details) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2021 USD ($)	Sep. 30, 2021 USD ($)	Jun. 30, 2021 USD ($)	Mar. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)	Sep. 30, 2020 USD ($)	Jun. 30, 2020 USD ($)	Mar. 31, 2020 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($) item	Dec. 31, 2019 USD ($) item
Real Estate Properties [Line Items]
Equity interest	51.90%								51.90%
Revenues	$ 50,760	$ 143,632	$ 54,254	$ 59,984	$ 92,346	$ 64,221	$ 45,244	$ 122,288	$ 308,630	$ 324,099	$ 273,705
Impairment of assets									678	5,791	10,948
Land development revenue
Real Estate Properties [Line Items]
Revenues									189,103	164,702	119,595
Cost of sales expense									$ 171,961	177,727	109,663
Land and development asset
Real Estate Properties [Line Items]
Impairment of assets										$ 2,700
Impairment of land and development assets, expected sales proceeds											5,300
Impairment of land and development assets, change in business strategy											$ 1,100
Number of land and development assets impaired | item										2	2
SAFE
Real Estate Properties [Line Items]
Real estate transaction price											$ 34,300
Payments to acquire land and develop asset											7,300
Assumption of loan in acquisition transaction											$ 27,000
Other Real Estate Equity Investment Dec 2016
Real Estate Properties [Line Items]
Equity interest											50.00%

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