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Regulatory Information | 6 Months Ended
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Jun. 30, 2019
Insurance [Abstract] |
Regulatory Information | Regulatory Information Statutory Requirements Our insurance subsidiaries, NMIC and Re One, file financial statements in conformity with statutory accounting principles (SAP) prescribed or permitted by the Wisconsin OCI, NMIC's principal regulator. Prescribed SAP includes state laws, regulations and general administrative rules, as well as a variety of publications of the National Association of Insurance Commissioners. The Wisconsin OCI recognizes only statutory accounting practices prescribed or permitted by the state of Wisconsin for determining and reporting the financial condition and results of operations of an insurance company and for determining its solvency under Wisconsin insurance laws. NMIC and Re One's combined statutory net income (loss) was as follows:
| For the three months ended June 30, |  | For the six months ended June 30,
| 2019 |  | 2018 |  | 2019 |  | 2018
| (In Thousands)
Statutory net income (loss) | $ | 6,466 |  |  | $ | 2,066 |  |  | $ | 5,539 |  |  | (4,748 | )
NMIC and Re One's combined statutory surplus, contingency reserve and risk-to-capital (RTC) ratios were as follows:
| June 30, 2019 |  | December 31, 2018
| (Dollars In Thousands)
Statutory surplus | $ | 438,397 |  |  | $ | 430,785 |
Contingency reserve | 423,413 |  |  | 332,702 |
RTC Ratio | 15.8:1 |  |  | 13.1:1 |
NMIH is not subject to any limitations on its ability to pay dividends except those generally applicable to corporations that are incorporated in Delaware. Delaware corporate law provides that dividends are only payable out of a corporation's capital surplus or, subject to certain limitations, recent net profits. NMIC and Re One's ability to pay dividends to NMIH is subject to Wisconsin OCI notice or approval. Certain other states in which NMIC is licensed also have statutes or regulations that restrict its ability to pay dividends. Since inception, NMIC and Re One have not paid any dividends to NMIH.

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- Definition The entire disclosure for the types of coverages and products sold, and the assets, obligations, recorded liabilities, revenues and expenses arising therefrom, and the amounts of and methodologies and assumptions used in determining the amounts of such items. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -URI http://asc.fasb.org/topic&trid=2303980 + Details
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