XML 30 R89.htm IDEA: XBRL DOCUMENT v2.4.0.8
Components of Carrying Value (Which Equals Fair Value) of Residential Available for Sale Securities (Detail) (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2014
Dec. 31, 2013
Schedule of Available-for-sale Securities [Line Items]    
Carrying Value $ 1,286,235 $ 1,558,306
Senior Securities
    
Schedule of Available-for-sale Securities [Line Items]    
Carrying Value 545,036 855,692
Senior Securities | Prime
    
Schedule of Available-for-sale Securities [Line Items]    
Carrying Value 358,813 662,306
Senior Securities | Non-prime
    
Schedule of Available-for-sale Securities [Line Items]    
Carrying Value 186,223 193,386
Re-REMIC
    
Schedule of Available-for-sale Securities [Line Items]    
Carrying Value 176,117 176,376
Subordinate Securities
    
Schedule of Available-for-sale Securities [Line Items]    
Carrying Value 565,082 526,238
Subordinate Securities | Prime
    
Schedule of Available-for-sale Securities [Line Items]    
Carrying Value 564,932 526,095
Subordinate Securities | Non-prime
    
Schedule of Available-for-sale Securities [Line Items]    
Carrying Value 150 143
Residential
    
Schedule of Available-for-sale Securities [Line Items]    
Principal balance 1,466,234 1,808,992
Credit reserve (73,875) (116,870)
Unamortized discount, net (299,105) (298,469)
Amortized cost 1,093,254 1,393,653
Amortized cost 1,093,254 1,393,653
Gross unrealized gains 195,988 187,786
Gross unrealized losses (3,007) (23,133)
Carrying Value 1,286,235 1,558,306
Residential | Senior Securities | Prime
    
Schedule of Available-for-sale Securities [Line Items]    
Principal balance 362,902 670,051
Credit reserve (4,082) (10,144)
Unamortized discount, net (41,314) (44,133)
Amortized cost 317,506 615,774
Amortized cost 317,506 615,774
Gross unrealized gains 42,113 47,980
Gross unrealized losses (805) (1,448)
Carrying Value 358,814 662,306
Residential | Senior Securities | Non-prime
    
Schedule of Available-for-sale Securities [Line Items]    
Principal balance 202,812 218,603
Credit reserve (9,894) (13,840)
Unamortized discount, net (33,676) (36,882)
Amortized cost 159,242 167,881
Amortized cost 159,242 167,881
Gross unrealized gains 27,004 25,654
Gross unrealized losses (24) (149)
Carrying Value 186,222 193,386
Residential | Re-REMIC
    
Schedule of Available-for-sale Securities [Line Items]    
Principal balance 206,212 214,046
Credit reserve (16,553) (30,429)
Unamortized discount, net (80,986) (80,188)
Amortized cost 108,673 103,429
Amortized cost 108,673 103,429
Gross unrealized gains 67,444 72,947
Carrying Value 176,117 176,376
Residential | Subordinate Securities
    
Schedule of Available-for-sale Securities [Line Items]    
Principal balance 694,308 706,292
Credit reserve (43,346) (62,457)
Unamortized discount, net (143,129) (137,266)
Amortized cost 507,833 506,569
Amortized cost 507,833 506,569
Gross unrealized gains 59,427 41,205
Gross unrealized losses (2,178) (21,536)
Carrying Value $ 565,082 $ 526,238