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Loss Reserves (Details) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2018 USD ($) loan | Dec. 31, 2017 USD ($) loan | Mar. 31, 2017 USD ($) loan
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |  |  |
Percentage of prior year delinquent inventory resolved (as a percent) | 31.00% |  | 29.00%
Prior years | $ | $ 81,983 |  | $ 127,224
Premium refund liability, expected claim payments | $ | 56,000 | $ 61,000 |
Prior years | $ | $ (35,220) |  | $ (52,797)
Default notices for loans in IADAs (in loans) |  | 9,294 |
Primary Delinquent Inventory [Roll Forward] |  |  |
Delinquent inventory at the beginning of period (in loans) | 46,556 |  | 50,282
New notices (in loans) | 14,623 |  | 14,939
Cures (in loans) | (18,073) |  | (17,128)
Paids (including those charged to a deductible or captive) (in loans) | (1,571) |  | (2,635)
Rescissions and denials (in loans) | (68) |  | (95)
Other items removed from inventory (in loans) | (224) |  | (14)
Delinquent inventory at end of period (in loans) | 41,243 | 46,556 | 45,349
Settlements for commutations of coverage, pools of nonperforming loans |  |  |
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |  |  |
Prior years | $ | $ 7,000 |  |
Decrease in estimated claim rate on primary defaults |  |  |
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |  |  |
Prior years | $ | (47,000) |  | $ (54,000)
Increase in estimated severity on primary defaults |  |  |
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |  |  |
Prior years | $ | 16,000 |  | 4,000
Change in estimates related to pool reserves, LAE reserves and reinsurance |  |  |
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items] |  |  |
Prior years | $ | $ (4,000) |  | $ (3,000)

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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 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 number of loans in the primary default inventory. + References No definition available. + Details
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- Definition Deductions from the primary default inventory resulting from loans in default being brought current. + References No definition available. + Details
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- Definition Additions to the primary default inventory resulting from new notices of defaulted loans. + References No definition available. + Details
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- Definition The number of new notices reported in locations that FEMA has declared as Individual Assistance Disaster Areas (IADAs). + References No definition available. + Details
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- Definition Deductions from the primary default inventory resulting from claims being paid, including those charged to a deductible or captive. + References No definition available. + Details
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- Definition Deductions from the primary default inventory resulting from rescissions and denials. + References No definition available. + Details
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- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + References No definition available. + Details
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