Amortization Period Excess of Loss Reinsurance Coverage

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- Definition

Reinsurance, Quota Share Reinsurance Agreement, Terms, Ceding Commission, Percent

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- Definition

Reinsurance, Quota Share Reinsurance Agreement, Terms, Ceding Rate, Percent, Option One

+ References

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- Definition

Reinsurance, Quota Share Reinsurance Agreement, Terms, Ceding Rate, Percent, Option Two

+ References

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- Definition

Reinsurance, Quota Share Reinsurance Agreement, Terms, Contingent Termination Fee

+ References

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- Definition

Reinsurance, Quota Share Reinsurance Agreement, Terms, Early Termination Written Notice Period

+ References

No definition available.

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- Definition

Reinsurance, Quota Share Reinsurance Agreement, Terms, Quota Share, Percent

+ References

No definition available.

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- Definition

Reinsurance, Quota Share Reinsurance Agreement, Terms, Threshold For Private Mortgage Insurer Eligibility Requirements For Termination Election

+ References

No definition available.

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- Definition

Reinsurance Retention Policy, Percent Of Total Trust Assets Invested In Cash Or Direct U.S. Federal Government Obligations

+ References

No definition available.

+ Details

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- Definition

Variable Interest Entity First Layer Retention

+ References

No definition available.

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- Definition

Amount of earned premiums ceded to other entities.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 225
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- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 30
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- Definition

Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

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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

Ratio of non-life losses and loss expenses to non-life net premiums earned.

+ References

No definition available.

+ Details

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- Definition

Amount, after valuation allowance, recoverable under reinsurance contracts for losses reported to the ceding insurer but not yet paid and amounts expected for incurred losses and settlement expenses, which have not yet been reported to the ceding insurer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition

Amount of risk reinsured in excess of stated retention per company policy.

+ References

No definition available.

+ Details

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- Definition

Carrying amount of the assets in the reporting entity's statement of financial position that relate to the reporting entity's variable interest in the Variable Interest Entity (VIE), where the reporting entity is not the VIE's primary beneficiary.

+ References

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Reinsurance - Narrative (Details) - USD ($)	3 Months Ended	12 Months Ended
Reinsurance - Narrative (Details) - USD ($)	Mar. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Effects of Reinsurance [Line Items]
Reinsurance recoverable on loss reserves		$ 33,328,000	$ 48,474,000	$ 50,493,000	$ 44,487,000
Aggregate excess of loss reinsurance coverage		318,600,000
Ceded premiums earned		$ 111,391,000	125,735,000	$ 133,981,000
Amortization period excess of loss reinsurance coverage		10 years
Quota Share Reinsurance Agreement, 2018
Effects of Reinsurance [Line Items]
Contingent termination fee		$ 0
Threshold for private mortgage insurer eligibility requirements for termination election		90.00%
Quota share, percentage		30.00%
Ceding commission, percentage		20.00%
Loss ratio		62.00%
Quota Share Reinsurance Agreement, 2017
Effects of Reinsurance [Line Items]
Contingent termination fee		$ 0
Threshold for private mortgage insurer eligibility requirements for termination election		90.00%
Quota share, percentage		30.00%
Ceding commission, percentage		20.00%
Loss ratio		60.00%
Quota Share Reinsurance Agreement, 2015
Effects of Reinsurance [Line Items]
Contingent termination fee		$ 0
Threshold for private mortgage insurer eligibility requirements for termination election		90.00%
Early termination written notice period		90 days
Quota share, percentage		30.00%
Ceding commission, percentage		20.00%
Loss ratio		60.00%
Quota Share Reinsurance Agreements, Excluding Captives
Effects of Reinsurance [Line Items]
Reinsurance recoverable on loss reserves		$ 33,200,000	$ 39,300,000
Quota Share Reinsurance Agreement, 2019 \| Forecast
Effects of Reinsurance [Line Items]
Contingent termination fee	$ 0
Threshold for private mortgage insurer eligibility requirements for termination election	90.00%
Quota share, percentage	30.00%
Ceding commission, percentage	20.00%
Loss ratio	62.00%
Cede rate, option 1	25.00%
Cede rate, option 2	20.00%
Excess of Loss Reinsurance Agreement, Home Re
Effects of Reinsurance [Line Items]
Ceded premiums earned		$ 2,800,000
Mortgage Guaranty Insurance Corporation
Effects of Reinsurance [Line Items]
Loss ratio		4.00%
First layer of aggregate losses retained		$ 168,700,000
Home Re 2018-1
Effects of Reinsurance [Line Items]
Total VIE Assets		$ 318,636,000
Percent of total trust assets invested in cash or direct U.S. federal government obligations		99.50%
Home Re 2018-1 \| Mortgage Insurance Linked Notes
Effects of Reinsurance [Line Items]
Debt instrument, face amount		$ 318,600,000
Term of mortgage insurance-linked notes		10 years