Land and Development (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Real Estate Properties [Line Items]
Revenues	$ 195,485	$ 115,054	$ 414,335	$ 384,930
Impairment of assets	1,179	0	2,965	6,491
Land development revenue
Real Estate Properties [Line Items]
Revenues	93,369	20,502	157,936	116,254
Cost of sales expense	$ 87,380	$ 21,358	$ 147,507	114,704
Land and Land Development
Real Estate Properties [Line Items]
Impairment of assets				$ 1,500