Payables and Accrued Liabilities - Schedule of Accrued Exit Liability By Action (Details) - USD ($) $ in Thousands	1 Months Ended	11 Months Ended
	Feb. 09, 2018	Dec. 31, 2018
Restructuring Reserve, [Roll Forward]
Balance at beginning of the period	$ 16,495	$ 15,925
Charges	931	13,082
Cash payments or other settlements	(1,501)	(11,270)
Balance at end of the period	15,925	17,737
Total cumulative charges incurred		73,691
Total expected costs to be incurred		75,325
Servicing [Member]
Restructuring Reserve, [Roll Forward]
Balance at beginning of the period	14,665	14,534
Charges	811	5,232
Cash payments or other settlements	(942)	(6,366)
Balance at end of the period	14,534	13,400
Total cumulative charges incurred		41,633
Total expected costs to be incurred		42,941
Originations [Member]
Restructuring Reserve, [Roll Forward]
Balance at beginning of the period	168	128
Charges	46	5,721
Cash payments or other settlements	(86)	(1,868)
Balance at end of the period	128	3,981
Total cumulative charges incurred		12,282
Total expected costs to be incurred		12,282
Reverse Mortgage [Member]
Restructuring Reserve, [Roll Forward]
Balance at beginning of the period	501	432
Charges	29	422
Cash payments or other settlements	(98)	(832)
Balance at end of the period	432	22
Total cumulative charges incurred		8,896
Total expected costs to be incurred		8,896
Corporate and Other [Member]
Restructuring Reserve, [Roll Forward]
Balance at beginning of the period	1,161	831
Charges	45	1,707
Cash payments or other settlements	(375)	(2,204)
Balance at end of the period	831	334
Total cumulative charges incurred		10,880
Total expected costs to be incurred		11,206
2016 and Prior Actions [Member]
Restructuring Reserve, [Roll Forward]
Balance at beginning of the period	540	472
Charges	(2)	(73)
Cash payments or other settlements	(66)	(369)
Balance at end of the period	472	30
Total cumulative charges incurred		37,345
Total expected costs to be incurred		37,345
2016 and Prior Actions [Member] | Servicing [Member]
Restructuring Reserve, [Roll Forward]
Balance at beginning of the period	348	289
Charges	(5)	(66)
Cash payments or other settlements	(54)	(215)
Balance at end of the period	289	8
Total cumulative charges incurred		18,001
Total expected costs to be incurred		18,001
2016 and Prior Actions [Member] | Originations [Member]
Restructuring Reserve, [Roll Forward]
Balance at beginning of the period	77	68
Charges	3	(41)
Cash payments or other settlements	(12)	(27)
Balance at end of the period	68	0
Total cumulative charges incurred		5,590
Total expected costs to be incurred		5,590
2016 and Prior Actions [Member] | Reverse Mortgage [Member]
Restructuring Reserve, [Roll Forward]
Balance at beginning of the period	18	18
Charges	0	34
Cash payments or other settlements	0	(30)
Balance at end of the period	18	22
Total cumulative charges incurred		7,175
Total expected costs to be incurred		7,175
2016 and Prior Actions [Member] | Corporate and Other [Member]
Restructuring Reserve, [Roll Forward]
Balance at beginning of the period	97	97
Charges	0	0
Cash payments or other settlements	0	(97)
Balance at end of the period	97	0
Total cumulative charges incurred		6,579
Total expected costs to be incurred		6,579
2017 Actions [Member]
Restructuring Reserve, [Roll Forward]
Balance at beginning of the period	15,955	14,837
Charges	306	1,418
Cash payments or other settlements	(1,424)	(5,020)
Balance at end of the period	14,837	11,235
Total cumulative charges incurred		23,982
Total expected costs to be incurred		23,982
2017 Actions [Member] | Servicing [Member]
Restructuring Reserve, [Roll Forward]
Balance at beginning of the period	14,317	13,718
Charges	289	1,591
Cash payments or other settlements	(888)	(4,109)
Balance at end of the period	13,718	11,200
Total cumulative charges incurred		19,398
Total expected costs to be incurred		19,398
2017 Actions [Member] | Originations [Member]
Restructuring Reserve, [Roll Forward]
Balance at beginning of the period	91	44
Charges	16	(8)
Cash payments or other settlements	(63)	(36)
Balance at end of the period	44	0
Total cumulative charges incurred		895
Total expected costs to be incurred		895
2017 Actions [Member] | Reverse Mortgage [Member]
Restructuring Reserve, [Roll Forward]
Balance at beginning of the period	483	387
Charges	2	(84)
Cash payments or other settlements	(98)	(303)
Balance at end of the period	387	0
Total cumulative charges incurred		1,222
Total expected costs to be incurred		1,222
2017 Actions [Member] | Corporate and Other [Member]
Restructuring Reserve, [Roll Forward]
Balance at beginning of the period	1,064	688
Charges	(1)	(81)
Cash payments or other settlements	(375)	(572)
Balance at end of the period	688	35
Total cumulative charges incurred		2,467
Total expected costs to be incurred		2,467
2018 Actions [Member]
Restructuring Reserve, [Roll Forward]
Balance at beginning of the period	0	616
Charges	627	11,737
Cash payments or other settlements	(11)	(5,881)
Balance at end of the period	616	6,472
Total cumulative charges incurred		12,364
Total expected costs to be incurred		13,998
2018 Actions [Member] | Servicing [Member]
Restructuring Reserve, [Roll Forward]
Balance at beginning of the period	0	527
Charges	527	3,707
Cash payments or other settlements	0	(2,042)
Balance at end of the period	527	2,192
Total cumulative charges incurred		4,234
Total expected costs to be incurred		5,542
2018 Actions [Member] | Originations [Member]
Restructuring Reserve, [Roll Forward]
Balance at beginning of the period	0	16
Charges	27	5,770
Cash payments or other settlements	(11)	(1,805)
Balance at end of the period	16	3,981
Total cumulative charges incurred		5,797
Total expected costs to be incurred		5,797
2018 Actions [Member] | Reverse Mortgage [Member]
Restructuring Reserve, [Roll Forward]
Balance at beginning of the period	0	27
Charges	27	472
Cash payments or other settlements	0	(499)
Balance at end of the period	27	0
Total cumulative charges incurred		499
Total expected costs to be incurred		499
2018 Actions [Member] | Corporate and Other [Member]
Restructuring Reserve, [Roll Forward]
Balance at beginning of the period	0	46
Charges	46	1,788
Cash payments or other settlements	0	(1,535)
Balance at end of the period	$ 46	299
Total cumulative charges incurred		1,834
Total expected costs to be incurred		$ 2,160