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Match Funded Advances - Schedule of Activity in Match Funded Advances (Details) - Residential Mortgage [Member] - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Match Funded Advances [Roll Forward]      
Beginning balance $ 2,409,442 $ 2,552,383 $ 3,049,244
Acquisitions [1] 0 85,521 3,589,773
Transfers from advances [2] 0 10,156 142,286
Sales of advances (308,990) 0 (3,639,205)
Collections of pledged advances, net of new advances and other (393,684) (238,618) (589,715)
Ending balance $ 1,706,768 $ 2,409,442 $ 2,552,383
[1] Servicing advances acquired through business acquisitions and asset acquisitions in connection with the acquisition of MSRs, that were pledged to advance facilities at the date of acquisition.
[2] New servicing advances initially classified as Advances at the date of payment and subsequently pledged to advance financing facilities.