Debt (Summary Of Additional Information Of Credit facilities) (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Revolving Secured Line Of Credit [Member]
Debt Instrument [Line Items]
Maximum outstanding balance	$ 195,100,000	$ 187,300,000
Average outstanding balance	97,900,000	96,200,000
Warehouse Facility II [Member]
Debt Instrument [Line Items]
Secured financing, maximum amount outstanding	169,100,000	177,200,000
Secured financings, average amount outstanding	81,800,000	99,800,000
Warehouse Facility III [Member]
Debt Instrument [Line Items]
Secured financing, maximum amount outstanding	60,000,000	73,000,000
Secured financings, average amount outstanding	23,300,000	45,500,000
Warehouse Facility IV [Member]
Debt Instrument [Line Items]
Secured financing, maximum amount outstanding	39,600,000	39,600,000
Secured financings, average amount outstanding	$ 11,800,000	$ 37,800,000