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Segment Information - Components of Corporate/Other (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2017 | Jun. 30, 2016 | Jun. 30, 2017 | Jun. 30, 2016
Segment Reporting Information [Line Items] |  |  |  |
Interest income | $ 59,224 | $ 66,787 | $ 113,852 | $ 129,115
Interest expense | (24,234) | (22,444) | (45,265) | (46,394)
Net Interest Income | 34,990 | 44,343 | 68,587 | 82,721
Mortgage banking activities, net | 12,046 | 7,728 | 29,650 | 14,946
Investment fair value changes, net | 8,115 | (11,066) | 9,666 | (30,604)
Realized gains, net | 1,372 | 9,884 | 7,075 | 19,422
Total non-interest income, net | 25,297 | 10,888 | 53,052 | 15,342
Direct operating expenses | (18,641) | (20,155) | (36,867) | (50,607)
Net Income | 36,324 | 41,281 | 73,293 | 53,344
Corporate/Other |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Interest income | 4,976 | 4,831 | 9,880 | 10,527
Interest expense | (12,600) | (12,681) | (25,443) | (25,835)
Net Interest Income | (7,624) | (7,850) | (15,563) | (15,308)
Mortgage banking activities, net | 0 | 0 | 0 | (2,062)
Investment fair value changes, net | (1,000) | (287) | (2,808) | (1,923)
Realized gains, net | (752) | 0 | (752) | 292
Total non-interest income, net | (1,752) | (287) | (3,560) | (3,693)
Direct operating expenses | (11,166) | (11,281) | (21,918) | (34,301)
Net Income | (20,542) | (19,418) | (41,041) | (53,302)
Corporate/Other | Legacy Consolidated VIEs |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Interest income | 4,863 | 4,911 | 9,701 | 9,688
Interest expense | (3,692) | (3,271) | (7,208) | (6,568)
Net Interest Income | 1,171 | 1,640 | 2,493 | 3,120
Mortgage banking activities, net |  |  | 0 | 0
Investment fair value changes, net | (987) | (251) | (2,797) | (1,831)
Realized gains, net | 0 | 0 | 0 | 0
Total non-interest income, net | (987) | (251) | (2,797) | (1,831)
Direct operating expenses | 0 | 0 | 0 | 0
Net Income | 184 | 1,389 | (304) | 1,289
Corporate/Other | Other |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Interest income | 113 | (80) | 179 | 839
Interest expense | (8,908) | (9,410) | (18,235) | (19,267)
Net Interest Income | (8,795) | (9,490) | (18,056) | (18,428)
Mortgage banking activities, net |  |  | 0 | (2,062)
Investment fair value changes, net | (13) | (36) | (11) | (92)
Realized gains, net | (752) | 0 | (752) | 292
Total non-interest income, net | (765) | (36) | (763) | (1,862)
Direct operating expenses | (11,166) | (11,281) | (21,918) | (34,301)
Net Income | $ (20,726) | $ (20,807) | $ (40,737) | $ (54,591)

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