INVESTMENTS IN SERVICER ADVANCES - Summary of Investments in Servicer Advances (Details) - Servicer Advance Joint Venture [Member] - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2015	[1]	Dec. 31, 2014
Investments in and Advances to Affiliates [Line Items]
Amortized Cost Basis		$ 7,400,068		$ 3,186,622
Carrying Value	[2]	$ 7,426,794		$ 3,270,839
Weighted Average Discount Rate		5.60%		5.40%
Weighted Average Yield		5.50%		5.80%
Weighted Average Life (Years)	[3]	4 years 4 months 27 days		4 years 6 days
Change in Fair Value Recorded in Other Income for Year then Ended		$ (57,491)		$ 84,217

[1] Excludes asset-backed securities collateralized by Servicer Advances with an aggregate face amount of $431.0 million and an aggregate carrying value of $430.3 million as of December 31, 2015. See Note 7 for details related to these securities.

[2] Carrying value represents the fair value of the investments in Servicer Advances, including the basic fee component of the related MSRs.

[3] Weighted Average Life represents the weighted average expected timing of the receipt of expected net cash flows for this investment.