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Loss Reserves - Narrative (Details) $ in Thousands | 12 Months Ended
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Dec. 31, 2016 USD ($) loan | Dec. 31, 2015 USD ($) loan | Dec. 31, 2014 USD ($) loan
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |  |  |
Losses for unpaid claims and adjustment expense | $ 689,258 | $ 823,058 | $ 1,121,508
Other items removed from inventory | loan | 1,273 | 1,121 | 193
Premium refund liability, expected claim payments | $ 85,000 | $ 102,000 |
Percent of inventory in default for more than 36 consecutive months | 47.00% | 50.00% | 53.00%
Pool insurance notice inventory (in number of loans) | loan | 1,883 | 2,739 | 3,797
Premium refund liability, expected future rescissions | $ 5,000 | $ 7,000 |
Payments for Settlements |  |  |
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |  |  |
Losses for unpaid claims and adjustment expense | 53,000 | 10,000 |
Payments for Settlements | Freddie Mac |  |  |
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |  |  |
Losses for unpaid claims and adjustment expense | $ 42,000 | $ 42,000 | $ 42,000
Decrease in estimated claim rate on primary defaults |  |  |
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |  |  |
Percentage of prior year default inventory resolved (in hundredths) | 63.00% | 60.00% | 58.00%

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- Definition The percentage of the prior year default inventory resolved, which is used in the calculation of the change in the severity and claim rates. + References No definition available. + Details
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- Definition The number of loans included in the pool insurance notice inventory as of the end of the reporting period. + References No definition available. + Details
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- Definition The carrying amount for the estimate of premiums to be refunded on expected claim payments. + References No definition available. + Details
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- Definition The carrying amount for the estimate of premiums to be refunded on expected future rescissions. + References No definition available. + Details
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- Definition Other deductions from the primary default inventory, including items removed for settlements + References No definition available. + Details
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- Definition Primary Default Inventory Twelve Months Or More, Percent Of Primary Default Inventory In Default For Twelve Months Or More In Default For More Than Thirty Six Consecutive Months + References No definition available. + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Amount of payments to settle claims incurred in prior periods and related claims settlement costs. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 40 -Section 50 -Paragraph 3 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6482485&loc=d3e14764-158437 + Details
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- Details
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- Details
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