Capitalized Interest Capitalized Interest (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Capitalized Interest [Abstract]
Capitalized interest, beginning of period	$ 13,802	$ 15,376
Interest capitalized to inventory	3,250	2,777
Capitalized interest charged to land and housing costs and expenses	(3,108)	(3,528)
Capitalized interest, end of period	13,944	14,625
Interest incurred	$ 7,420	$ 7,117