Related Party Transactions Related Party Transactions - Additional Information (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Related Party Transaction [Line Items]
Investment in WCO	$ 19,403	$ 22,598
Corporate Joint Venture [Member] \| Investment Advisory And Management Services Provided To Walter Capital Opportunity Corp [Member]
Related Party Transaction [Line Items]
Fees earned related to WCO	1,700	1,000	$ 300
Receivable from WCO	900	1,200
Corporate Joint Venture [Member] \| Sub-servicing Performed For WCO [Member]
Related Party Transaction [Line Items]
Fees earned related to WCO	4,400	1,300
Incentive and performance fees, and ancillary and other fees related to servicing assets held by WCO	700	200
Walter Capital Opportunity Corp. [Member]
Related Party Transaction [Line Items]
Investment in WCO	19,400	22,600
Income (loss) relating to investment in WCO	(2,200)	$ 600	$ 200
Dividend	$ 1,000

For an unclassified balance sheet, amount of receivables arising from transactions with related parties.

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