Summary Of Significant Accounting Policies (Narrative) (Details) - USD ($) $ in Thousands, shares in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
Antidilutive securities excluded from computation of earnings per share (shares)	4.3	7.1	4.5	7.3
Liabilities for land, not owned, under option agreements	$ 98,264		$ 98,264		$ 30,186
Land, Not Owned, Under Option Agreements	98,264		98,264		30,186
Residential mortgage loans available-for-sale fair value	269,544		269,544		339,531
Residential mortgage loans available-for-sale aggregate outstanding principal balance	264,500		264,500		327,400
Net gain (loss) from change in fair value	(900)	$ 800	(800)	$ 1,600
Net gains from the sale of mortgages	17,600	$ 17,500	$ 33,800	$ 30,500
Variability in future cash flows of derivative instruments in days			75 days
Interest rate lock commitments
Derivative, notional amount	259,900		$ 259,900		146,100
Forward contracts
Derivative, notional amount	462,000		462,000		371,000
Whole loan commitments
Derivative, notional amount	$ 26,400		$ 26,400		$ 63,500