OTHER INCOME, ASSETS AND LIABILITIES - Schedule of Accretion and Other Amortization (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Accretion and other amortization:
Accretion of servicer advance interest income	$ 316,512	$ 156,749
Accretion of excess mortgage servicing rights income	49,546	76,231
Accretion of net discount on securities and loans	187,039	109,228
Amortization of deferred financing costs	(6,800)	(9,320)
Amortization of discount on notes and bonds payable	(911)	(973)
Accretion of loan discount and premium amortization, net	$ 545,386	$ 331,915