Business Segments Business Segments (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Segment Reporting Information [Line Items]
Revenue	$ 1,000,530	$ 860,811
Operating Income	134,586	122,905
Interest expense		671
Interest income	(1,389)
Equity in loss (income) from joint venture arrangements	(7)	(16)
Income before income taxes	135,982	122,250
Northern Homebuilding [Member]
Segment Reporting Information [Line Items]
Revenue	382,730	353,786
Operating Income	39,160	40,216
Interest expense	(46)	0
Southern Homebuilding [Member]
Segment Reporting Information [Line Items]
Revenue	592,519	482,914
Operating Income	97,612	84,293
Interest income	(2)	(2)
Financial Service
Segment Reporting Information [Line Items]
Revenue	25,281	24,111
Operating Income	14,968	13,933
Interest expense	2,327	878
Corporate and Other [Member]
Segment Reporting Information [Line Items]
Selling, general and administrative expenses	(17,154)	(15,537)
Interest Income	$ (3,668)	$ (205)