Significant Accounting Policies - Additional Information (Details) (USD $)	3 Months Ended		12 Months Ended
	Sep. 30, 2014	Jun. 30, 2014	Dec. 31, 2014	Dec. 31, 2013
Accounting Policies [Abstract]
Number Of Days To Settle Third Party Payment Processing Transactions			3 days
Cash In Process of Settlement			$ 88,600,000	$ 79,600,000
Minimum Period After Which Residential Loans Are Placed On Nonaccrual Status			90 days
Gain (Loss) on Transfers of Reverse Loans			0
Percentage Of Maximum Claim Amount Threshold For Repurchase			98.00%
Escrow Deposit			3,500,000,000	3,000,000,000
Minimum Initial Cash Investment Percentage Required For Revenue from the Sales of Real Estate to be recognized.			5.00%
Asset Management Performance Fees Collected	$ 2,500,000	$ 34,200,000	$ 36,800,000