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Fair Value of Financial Instruments - Changes in Level 3 Assets and Liabilities Measured at Fair Value on Recurring Basis (Details) $ in Thousands | 6 Months Ended
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Jun. 30, 2018 USD ($)
ABS Issued |
Liabilities |
Beginning balance | $ 1,164,585
Acquisitions | 925,845
Sales | 0
Principal paydowns | (181,782)
Gains (losses) in net income, net | 21,014
Unrealized gains in OCI, net | 0
Other settlements, net | 0
Ending balance | 1,929,662
Residential Loans |
Assets |
Beginning balance | 5,114,317
Acquisitions | 3,766,510
Sales | (3,002,879)
Principal paydowns | (365,392)
Gains (losses) in net income, net | (19,665)
Unrealized losses in OCI, net | 0
Other settlements, net | (1,836)
Ending balance | 5,491,055
Trading securities |
Assets |
Beginning balance | 968,844
Acquisitions | 361,535
Sales | (260,119)
Principal paydowns | (11,748)
Gains (losses) in net income, net | (4,217)
Unrealized losses in OCI, net | 0
Other settlements, net | 0
Ending balance | 1,054,295
AFS Securities |
Assets |
Beginning balance | 507,666
Acquisitions | 5,952
Sales | (92,110)
Principal paydowns | (22,226)
Gains (losses) in net income, net | 21,930
Unrealized losses in OCI, net | (21,571)
Other settlements, net | 0
Ending balance | 399,641
MSRs |
Assets |
Beginning balance | 63,598
Acquisitions | 0
Sales | (1,077)
Principal paydowns | 0
Gains (losses) in net income, net | 2,153
Unrealized losses in OCI, net | 0
Other settlements, net | 0
Ending balance | 64,674
Guarantee Asset |
Assets |
Beginning balance | 2,869
Acquisitions | 0
Sales | 0
Principal paydowns | 0
Gains (losses) in net income, net | 67
Unrealized losses in OCI, net | 0
Other settlements, net | 0
Ending balance | 2,936
Derivatives |
Assets |
Beginning balance | 1,714
Acquisitions | 0
Sales | 0
Principal paydowns | 0
Gains (losses) in net income, net | (9,681)
Unrealized losses in OCI, net | 0
Other settlements, net | 6,257
Ending balance | $ (1,710)

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