Radian (RDN) 10-Q 8 Nov 18 2018 Q3 Quarterly report Financial data

Document and Entity Information

Document and Entity Information Document - shares	9 Months Ended
	Sep. 30, 2018	Nov. 05, 2018
Document Information [Line Items]
Entity Registrant Name	Radian Group Inc.
Entity Central Index Key	890,926
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Document Type	10-Q
Document Period End Date	Sep. 30, 2018
Document Fiscal Year Focus	2,018
Document Fiscal Period Focus	Q3
Amendment Flag	false
Entity Common Stock, Shares Outstanding		213,333,428
Entity Current Reporting Status	Yes
Entity Emerging Growth Company	false
Entity Small Business	false

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets (Unaudited) Statement - USD ($) $ in Thousands		Sep. 30, 2018	Dec. 31, 2017
ASSETS
Fixed-maturities available for sale—at fair value (amortized cost $3,838,823 and $3,426,217)		$ 3,763,710	$ 3,458,719
Trading Securities—at fair value		493,956	606,401
Equity Securities-at fair value		121,865
Equity securities available for sale—at fair value (at December 31, 2017, classified as available for sale with related cost of $163,106)			162,830
Short-term investments—at fair value (includes $31,799 and $19,357 of reinvested cash collateral held under securities lending agreements)		645,119	415,658
Other invested assets—at fair value (amortized cost at December 31, 2017)		3,585	334
Total investments		5,028,235	4,643,942
Cash		104,413	80,569
Restricted cash		9,925	15,675
Accounts and notes receivable		108,003	72,558
Property, Plant and Equipment, Net	[1]	38,060	38,291
Deferred income taxes, net (Note 9)		134,201	229,567
Goodwill and other acquired intangible assets, net (Note 6)		55,707	64,212
Prepaid reinsurance premium		413,728	386,509
Other assets (Note 8)		415,272	407,849
Total assets		6,269,484	5,900,881
Liabilities and Stockholders’ Equity
Unearned premiums		747,921	723,938
Reserve for losses and loss adjustment expense (“LAE”) (Note 10)		412,460	507,588
Senior notes (Note 11)		1,029,511	1,027,074
Reinsurance funds withheld		352,952	288,398
Other liabilities (Note 12)		379,362	353,845
Total liabilities		2,922,206	2,900,843
Commitments and contingencies (Note 13)
Stockholders’ equity
Common stock: par value $0.001 per share; 485,000,000 shares authorized at September 30, 2018 and December 31, 2017; 230,978,401 and 233,416,989 shares issued at September 30, 2018 and December 31, 2017, respectively; 213,333,428 and 215,814,188 shares outstanding at September 30, 2018 and December 31, 2017, respectively		231	233
Treasury stock, at cost: 17,644,973 and 17,602,801 shares at September 30, 2018 and December 31, 2017, respectively		(894,635)	(893,888)
Additional paid-in capital		2,720,626	2,754,275
Retained earnings		1,580,296	1,116,333
Accumulated other comprehensive income (loss) (Note 15)		(59,240)	23,085
Total stockholders’ equity		3,347,278	3,000,038
Total liabilities and stockholders’ equity		6,269,484	5,900,881
Deferred policy acquisition costs		16,922	16,987
Accrued Investment Income Receivable		$ 34,430	$ 31,389
[1]	Property and equipment at cost, less accumulated depreciation of $61.0 million and $57.6 million at September 30, 2018 and December 31, 2017 , respectively. Depreciation expense was $2.1 million and $1.9 million for the three-month periods ended September 30, 2018 and 2017 , respectively, and $5.9 million and $4.9 million for the nine-month periods ended September 30, 2018 and 2017

Balance Sheet Parenthetical (Pa

Balance Sheet Parenthetical (Parentheticals) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Fixed-maturities available for sale—at amortized cost	$ 3,838,823	$ 3,426,217
Equity securities available for sale—at cost		163,106
Reinvested cash collateral held under securities lending agreements	$ 31,800	$ 19,357
Common Stock, Number of Shares, Par Value and Other Disclosures [Abstract]
Common Stock, Par or Stated Value Per Share	$ 0.001	$ 0.001
Common Stock, Shares Authorized	485,000,000	485,000,000
Common Stock, Shares, Issued	230,978,401	233,416,989
Common Stock, Shares, Outstanding	213,333,428	215,814,188
Treasury Stock, Shares	17,644,973	17,602,801

Condensed Consolidated Statemen

Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Revenues:
Net premiums earned—insurance	$ 258,431	$ 236,702	$ 752,325	$ 687,598
Services revenue	36,566	39,571	106,558	115,400
Net investment income	38,995	32,540	110,424	93,643
Net gains (losses) on investments and other financial instruments	(4,480)	2,480	(30,771)	4,960
Other income	1,174	760	2,997	2,118
Total revenues	330,686	312,053	941,533	903,719
Expenses:
Provision for losses	20,881	35,841	77,501	99,976
Policy acquisition costs	5,667	5,554	18,780	18,406
Cost of services	25,854	27,240	73,185	81,250
Other operating expenses	70,125	64,195	203,552	201,322
Restructuring and other exit costs (Note 1)	4,464	12,038	5,940	12,038
Interest expense	15,535	15,715	45,906	47,832
Loss on induced conversion and debt extinguishment	0	45,766	0	51,469
Impairment of goodwill (Note 6)	0	0	0	184,374
Amortization and impairment of other acquired intangible assets	3,472	2,890	8,968	25,042
Total expenses	145,998	209,239	433,832	721,709
Consolidated pretax income (loss)	184,688	102,814	507,701	182,010
Income tax provision	41,891	37,672	41,469	67,738
Net income	$ 142,797	$ 65,142	$ 466,232	$ 114,272
Earnings Per Share, Basic [Abstract]
Basic net income (loss) per share	$ 0.67	$ 0.30	$ 2.17	$ 0.53
Earnings Per Share, Diluted [Abstract]
Diluted net income (loss) per share	$ 0.66	$ 0.30	$ 2.13	$ 0.52
Weighted-average number of common shares outstanding—basic	213,309	215,279	214,499	215,194
Weighted-average number of common and common equivalent shares outstanding—diluted	217,902	219,391	218,783	220,230

Condensed Consolidated Statem_2

Condensed Consolidated Statements of Comprehensive Income (Loss) (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Net income	$ 142,797	$ 65,142	$ 466,232	$ 114,272
Unrealized gains (losses) on investments:
Unrealized holding gains (losses) arising during the period	(5,341)	6,239	(93,788)	33,845
Less: Reclassification adjustment for net gains (losses) included in net income	(4,044)	111	(8,512)	(2,687)
Net unrealized gains (losses) on investments	(1,297)	6,128	(85,276)	36,532
Foreign Currency Translation Adjustments
Unrealized foreign currency translation adjustments	0	28	3	136
Other comprehensive income (loss), net of tax	(1,297)	6,156	(85,273)	36,668
Comprehensive income	$ 141,500	$ 71,298	$ 380,959	$ 150,940

Condensed Consolidated Statem_3

Condensed Consolidated Statements of Changes in Common Stockholders' Equity (Unaudited) - USD ($) $ in Thousands	Total	Parent	Common Stock	Treasury Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	ASU 2016-09Additional Paid-in Capital	ASU 2016-09Retained Earnings	ASU 2016-01Retained Earnings	ASU 2016-01Accumulated Other Comprehensive Income (Loss)	ASU 2018-02Retained Earnings	ASU 2018-02Accumulated Other Comprehensive Income (Loss)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cumulative effect of adopting accounting standard update								$ 756	$ (491)	$ 0	$ 0	$ 0	$ 0
Balance, beginning of period at Dec. 31, 2016			$ 232	$ (893,332)	$ 2,779,891	$ 997,890	$ (12,395)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock under incentive and benefit plans			1
Shares repurchased under share repurchase program (Note 14)			0		(6)
Repurchases of common stock under incentive plans				(422)
Issuance of common stock under incentive and benefit plans					4,761
Share-based compensation					10,290
Impact of extinguishment of convertible senior notes					(52,408)
Termination of capped calls					4,109
Net income	$ 114,272					114,272
Dividends declared						(1,614)
Net unrealized gains (losses) on investments, net of tax	36,532						36,532
Net foreign currency translation adjustment, net of tax	136						136
Balance, end of period at Sep. 30, 2017		$ 2,988,202	233	(893,754)	2,747,393	1,110,057	24,273
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cumulative effect of adopting accounting standard update								$ 0	$ 0	$ 2,061	$ 224	$ (2,724)	$ 2,724
Balance, beginning of period at Dec. 31, 2017	3,000,038		233	(893,888)	2,754,275	1,116,333	23,085
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock under incentive and benefit plans			1
Shares repurchased under share repurchase program (Note 14)			(3)		(50,050)
Repurchases of common stock under incentive plans				(747)
Issuance of common stock under incentive and benefit plans					2,593
Share-based compensation					13,808
Impact of extinguishment of convertible senior notes					0
Termination of capped calls					0
Net income	466,232					466,232
Dividends declared						(1,606)
Net unrealized gains (losses) on investments, net of tax	(85,276)						(85,276)
Net foreign currency translation adjustment, net of tax	3						3
Balance, end of period at Sep. 30, 2018	$ 3,347,278	$ 3,347,278	$ 231	$ (894,635)	$ 2,720,626	$ 1,580,296	$ (59,240)

Condensed Consolidated Statem_4

Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Net Cash Provided by (Used in) Operating Activities [Abstract]
Net Cash Provided by (Used in) Operating Activities	$ 491,929	$ 218,425
Cash flows from investing activities:
Proceeds from Sales of Fixed-Maturity Investments Available-for-sale	577,034	737,054
Proceeds from Sales of Trading Securities	35,182	176,448
Proceeds from Sales of Equity Securities	92,702	23,423
Proceeds from Redemption of Fixed-Maturity Investments Available for sale	337,857	377,219
Proceeds from Redemptions of Trading securities	53,437	70,161
Purchases of Fixed-Maturity Investments Available-for-sale	(1,307,335)	(1,491,083)
Purchases of Equity Securities	(59,625)	(195,297)
Sales, Redemptions and (Purchases) of Short-term Investments, Net	(216,778)	251,509
Sales, Redemptions and (Purchases) of Other assets and other invested assets, net	2,111	596
Purchases of property and equipment, net	(20,323)	(25,173)
Acquisitions, net of cash acquired	(662)	(86)
Net cash provided by (used in) investing activities	(506,400)	(75,229)
Cash flows from financing activities:
Dividends paid	(1,606)	(1,614)
Issuance of senior notes, net	0	443,250
Purchases and redemptions of senior notes	0	(591,918)
Proceeds from termination of capped calls	0	4,109
Issuance of common stock	1,128	3,283
Purchase of common shares	(50,053)	(6)
Credit facility commitment fees paid	(643)	0
Change in secured borrowings (Note 12)	41,414	36,782
Proceeds from secured borrowings (with terms greater than 3 months)	45,458	0
Payments of secured borrowings (with terms greater than 3 months)	(3,000)	0
Repayment of other borrowings	(133)	(207)
Net cash provided by (used in) financing activities	32,565	(106,321)
Effect of exchange rate changes on cash and restricted cash	0	116
Increase (decrease) in cash and restricted cash	18,094	36,991
Cash and restricted cash, beginning of period	96,244	61,814
Cash and restricted cash, end of period	$ 114,338	$ 98,805

Note 1 - Condensed Consolidated

Note 1 - Condensed Consolidated Financial Statements - Business Overview, Recent Developments and Significant Accounting Policies	9 Months Ended
	Sep. 30, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Organization, Consolidation and Presentation of Financial Statements Disclosure and Significant Accounting Policies [Text Block]	Condensed Consolidated Financial Statements—Business Overview, Recent Developments and Significant Accounting Policies Business Overview We are a diversified mortgage and real estate services business, providing both credit-related insurance coverage and other credit risk management solutions, as well as a broad array of mortgage and real estate services. We have two reportable business segments—Mortgage Insurance and Services. Mortgage Insurance Our Mortgage Insurance segment provides credit-related insurance coverage, principally through private mortgage insurance, as well as other credit risk management solutions, to mortgage lending institutions and mortgage investors. We provide our mortgage insurance products and services mainly through our wholly-owned subsidiary, Radian Guaranty. Private mortgage insurance plays an important role in the U.S. housing finance system because it promotes affordable home ownership and helps protect mortgage lenders, investors and other beneficiaries by mitigating default-related losses on residential mortgage loans. Generally, these loans are made to home buyers who make down payments of less than 20% of the purchase price for their home or, in the case of refinancings, have less than 20% equity in their homes. Private mortgage insurance also facilitates the sale of these low down payment loans in the secondary mortgage market, most of which are currently sold to the GSEs. Our total direct primary mortgage insurance RIF was $55.6 billion as of September 30, 2018 . The GSEs and state insurance regulators impose various capital and financial requirements on our insurance subsidiaries. These include Risk-to-capital, other risk-based capital measures and surplus requirements, as well as the PMIERs financial requirements discussed below. Failure to comply with these capital and financial requirements may limit the amount of insurance that our insurance subsidiaries may write or prohibit our insurance subsidiaries from writing insurance altogether. The GSEs and state insurance regulators also possess significant discretion with respect to our insurance subsidiaries and all aspects of their businesses. See Note 16 for additional regulatory information. PMIERs. In order to be eligible to insure loans purchased by the GSEs, mortgage insurers such as Radian Guaranty must meet the GSEs’ eligibility requirements, or PMIERs. At September 30, 2018 , Radian Guaranty is an approved mortgage insurer under the PMIERs and is in compliance with the PMIERs financial requirements. The PMIERs are comprehensive, covering virtually all aspects of the business and operations of a private mortgage insurer, including internal risk management and quality controls, the relationship between the GSEs and the approved insurer as well as the approved insurer’s financial condition. In addition, the GSEs have a broad range of consent rights under the PMIERs, and require private mortgage insurers to obtain the prior consent of the GSEs before taking certain actions, which may include paying dividends, entering into various intercompany agreements, and commuting or reinsuring risk, among others. If Radian Guaranty is unable to satisfy the requirements set forth in the PMIERs, the GSEs could restrict it from conducting certain types of business with them or take actions that may include not purchasing loans insured by Radian Guaranty. The PMIERs financial requirements require that a mortgage insurer’s Available Assets meet or exceed its Minimum Required Assets. The GSEs may amend the PMIERs at any time, and they have broad discretion to interpret the requirements, which could impact the calculation of Radian Guaranty’s Available Assets and/or Minimum Required Assets. On September 27, 2018, the GSEs issued PMIERs 2.0, which will become effective on March 31, 2019. Radian expects that it will be able to fully comply with PMIERs 2.0 and maintain an excess of Available Assets over Minimum Required Assets as of the effective date. Services Our Services segment is primarily a fee-for-service business that offers a broad array of services to market participants across the mortgage and real estate value chain. These services comprise mortgage services, real estate services and title services, including technology-based and turn-key solutions, that provide information and other resources and services used to originate, evaluate, acquire, securitize, service and monitor residential real estate and loans secured by residential real estate. We provide these services to, among others, mortgage lenders, financial institutions, mortgage and real estate investors and government entities. Our mortgage services include transaction management services such as loan review, RMBS securitization and distressed asset reviews, servicer and loan surveillance and underwriting. We offer a comprehensive suite of real estate services that includes software solutions and platforms, as well as digitally delivered services, including: REO asset management; review and valuation services related to single family rental properties; real estate valuation services and real estate brokerage services. Our title services include title search, title insurance, settlement and closing services. 2018 Developments Capital and Liquidity Actions. On August 9, 2017, Radian Group’s board of directors authorized the Company to repurchase up to $50 million of its common stock. The Company completed this program during the first half of 2018 by purchasing 3,022,856 shares at an average price of $16.56 per share, including commissions. On August 16, 2018, Radian Group’s board of directors approved a new share repurchase program that authorizes the Company to repurchase up to $100 million of its common stock in the open market or in privately negotiated transactions until expiration of the program on July 31, 2019. As of September 30, 2018, the full purchase authority of up to $100 million remained available under this program. See Note 14 for additional information. Restructuring and Other Exit Costs. As a result of the Company’s continued implementation of its 2017 plan to restructure the Services business, in the three months ended September 30, 2018, pretax restructuring charges of $0.9 million were recognized, which include: (i) $0.4 million in cash expenses and (ii) $0.5 million of asset impairment charges. For the nine months ended September 30, 2018, pretax restructuring charges of $2.4 million were recognized, including: (i) $1.9 million of cash expenses; (ii) $0.6 million asset impairment charges; and (iii) an adjustment to the previously recognized loss related to the sale of our EuroRisk business. We expect to incur additional pretax charges of approximately $0.2 million under this restructuring plan, all of which represent cash payments. These remaining charges are expected to be recognized by December 31, 2018. Total estimated restructuring charges for 2018 of approximately $2.6 million are expected to consist of: (i) asset impairment charges of approximately $0.5 million ; (ii) employee severance and benefit costs of approximately $0.8 million ; and (iii) facility and lease termination costs of approximately $1.3 million . See Notes 1 and 7 of Notes to Consolidated Financial Statements in our 2017 Form 10-K for additional information, including the events that led to the restructuring plan. We review assets for impairment in accordance with the accounting guidance for long-lived assets. As part of this assessment, during the three months ended September 30, 2018, we incurred $3.6 million of other exit costs associated with impairment of internal-use software that was in addition to the asset impairment charges recognized as part of the restructuring charges associated with our services business. IRS Matter. Radian finalized a settlement with the IRS which resolved the issues and concluded all disputes related to the IRS Matter. In the three-month period ended June 30, 2018, we recorded tax benefits of $73.6 million , which includes both the impact of the settlement with the IRS as well as the reversal of certain previously accrued state and local tax liabilities. Under the terms of the settlement, Radian will submit to the IRS approximately $31 million of its $89 million “qualified deposits” with the U.S. Treasury, and the remaining balance will be returned to Radian. See Note 9 for additional information. Significant Accounting Policies Basis of Presentation Our condensed consolidated financial statements are prepared in accordance with GAAP and include the accounts of Radian Group Inc. and its subsidiaries. All intercompany accounts and transactions, and intercompany profits and losses, have been eliminated. We have condensed or omitted certain information and footnote disclosures normally included in consolidated financial statements prepared in accordance with GAAP pursuant to the instructions set forth in Article 10 of Regulation S-X of the SEC. We refer to Radian Group Inc. together with its consolidated subsidiaries as “Radian,” the “Company,” “we,” “us” or “our,” unless the context requires otherwise. We generally refer to Radian Group Inc. alone, without its consolidated subsidiaries, as “Radian Group.” Unless otherwise defined in this report, certain terms and acronyms used throughout this report are defined in the Glossary of Abbreviations and Acronyms included as part of this report. The financial information presented for interim periods is unaudited; however, such information reflects all adjustments that are, in the opinion of management, necessary for the fair statement of the financial position, results of operations, comprehensive income and cash flows for the interim periods presented. Such adjustments are of a normal recurring nature. The year-end condensed balance sheet data was derived from our audited financial statements, but does not include all disclosures required by GAAP. These interim financial statements should be read in conjunction with the audited financial statements and notes thereto included in our 2017 Form 10-K. The results of operations for interim periods are not necessarily indicative of results to be expected for the full year or for any other period. Certain prior period amounts have been reclassified to conform to current period presentation. Use of Estimates The preparation of financial statements in conformity with GAAP requires us to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of our contingent assets and liabilities at the dates of the financial statements, as well as the reported amounts of revenues and expenses during the reporting periods. While the amounts included in our condensed consolidated financial statements include our best estimates and assumptions, actual results may vary materially. Other Significant Accounting Policies See Note 2 of Notes to Consolidated Financial Statements in our 2017 Form 10-K for information regarding other significant accounting policies. There have been no significant changes in our significant accounting policies from those discussed in our 2017 Form 10-K, other than described below, including in “ —Revenue Recognition” and “—Recent Accounting Pronouncements—Accounting Standards Adopted During 2018. ” Revenue Recognition The FASB issued an update to the accounting standard regarding revenue recognition, Revenue from Contracts with Customers , which establishes principles for reporting information about the nature, amount, timing and uncertainty of revenue and cash flows arising from our contracts with customers to provide services. We adopted this update effective January 1, 2018, using the modified retrospective approach. The principle of this update requires an entity to recognize revenue representing the transfer of services to customers in an amount that reflects the consideration that it expects to be entitled to receive in exchange for those services, recognized as the performance obligations are satisfied. The majority of our revenue-generating transactions are not subject to the new standard as this update did not change revenue recognition principles related to our investments and insurance products, which together represented the majority of our total revenue for the nine months ending September 30, 2018 and are subject to other GAAP guidance discussed elsewhere within our disclosures. This update is primarily applicable to revenues from our Services segment. See “—Business Overview— Services ” for information about the services we offer. The table below represents the disaggregation of Services revenues by revenue type: Three Months Ended Nine Months Ended (In thousands) 2018 2017 2018 2017 Services segment revenue Mortgage Services $ 14,663 $ 17,005 $ 44,998 $ 53,158 Real Estate Services 20,920 17,386 58,124 49,863 Title Services 2,198 6,671 6,933 18,105 Total (1) $ 37,781 $ 41,062 $ 110,055 $ 121,126 ______________________ (1) Includes inter-segment revenues of $0.8 million and $2.7 million for the three and nine months ended September 30, 2018 and $1.5 million and $5.7 million for the three and nine months ended September 30, 2017 , respectively. For the three and nine months ended September 30, 2018 , amounts exclude $3.1 million and $5.5 million , respectively, of Services segment net premiums earned—insurance and net investment income, as both are excluded from the scope of the revenue recognition standard. See Note 3 for segment information. Our Services segment revenues are recognized over time and measured each period based on the progress to date as services are performed and made available to customers. Our contracts with customers, including payment terms, are generally short-term in nature; therefore, any impact related to timing is immaterial. Revenue recognized related to services made available to customers and billed is reflected in accounts receivables. Revenue recognized related to services performed and not yet billed is recorded in unbilled receivables and reflected in other assets. We have no material bad-debt expense. The following represents balances related to Services contracts as of the dates indicated: (In thousands) September 30, 2018 December 31, 2017 Accounts Receivable - Services Contracts $ 12,544 $ 17,391 Unbilled Receivables - Services Contracts 19,580 22,257 Deferred Revenues - Services Contracts 4,131 3,235 Revenue expected to be recognized in any future period related to remaining performance obligations, such as contracts where revenue is recognized as invoiced and contracts with variable consideration related to undelivered performance obligations, is not material. Fee-for-Service Contracts Generally, our contracts with our clients do not include minimum volume commitments and can be terminated at any time by our clients. Although some of our contracts and assignments are recurring in nature, and include repetitive monthly assignments, a significant portion of our engagements are transactional in nature and may be performed in connection with securitizations, loan sales, loan purchases or other transactions. Due to the transactional nature of our business, our Services segment revenues may fluctuate from period to period as transactions are commenced or completed. We do not recognize revenue or expense related to amounts advanced by us and subsequently reimbursed by clients for maintenance or repairs because we do not take control of the service prior to the client taking control. We record an expense if an advance is made that is not in accordance with a client contract and the client is not obligated to reimburse us. Due to the nature of the services provided, our Services arrangements with customers may include any of the following three basic types of contracts: Fixed-Price Contracts. We use fixed-price contracts in our real estate valuation and component services, our loan review, underwriting and due diligence services as well as our title and closing services. We also use fixed-price contracts in our surveillance business for our servicer oversight services and RMBS surveillance services, and in our asset management business activities. Under fixed-price contracts we agree to perform the specified services and deliverables for a pre-determined per-unit or per-file price or day rate. Each service qualifies as a separate performance obligation and revenue is recognized as the service performed is made available to the client. Time-and-Expense Contracts. The Services segment also derives a portion of its revenue from professional service activities under time-and-expense contracts. In these types of contracts, we are paid a fixed hourly rate, and we are reimbursed for billable out-of-pocket expenses as work is performed. These contracts are used in our loan review, underwriting and due diligence services. Services revenue consisting of billed time fees and pass-through expenses is recorded over time and based on the progress to date as services are performed and made available to customers. Services revenue may also include expenses billed to clients, which includes travel and other out-of-pocket expenses, and other reimbursable expenses. Percentage-of-Sale Contracts. Under percentage-of-sale contracts, we are paid a contractual percentage of the sale proceeds upon the sale of each property. These contracts are only used for a portion of our REO management services and our real estate brokerage services. In addition, through the use of our proprietary technology, property leads are sent to select clients. Revenue attributable to services provided under a percentage-of-sale contract is recognized over time and measured based on the progress to date and typically coincides with the client’s successful closing on the property. The revenue recognized for these transactions is based on a percentage of the sale. In certain instances, fees are received at the time that an asset is assigned to Radian for management. These fees are recorded as deferred revenue and are recognized over time based on progress to date and the availability to customers. Recent Accounting Pronouncements Accounting Standards Adopted During 2018. In May 2014, the FASB issued an update to the accounting standard regarding revenue recognition. In July 2015, the FASB delayed the effective date for this updated standard for public companies to interim and annual periods beginning after December 15, 2017, and subsequently issued various clarifying updates. Our adoption of this standard, effective January 1, 2018, had no impact on our financial statements. The disclosures required by this update are included above in “— Revenue Recognition. ” In January 2016, the FASB issued an update that makes certain changes to the standard for the accounting of financial instruments. Among other things, the update requires: (i) equity investments to be measured at fair value with changes in fair value recognized in net income; (ii) the use of the exit price notion when measuring the fair value of financial instruments for disclosure purposes; (iii) separate presentation of financial assets and financial liabilities by measurement category and form of financial asset; and (iv) separate presentation in other comprehensive income of the portion of the total change in the fair value of a liability resulting from a change in the instrument-specific credit risk (also referred to as “own credit”) when the organization has elected to measure the liability at fair value in accordance with the fair value option for financial instruments. The update also eliminates the requirement to disclose the methods and significant assumptions used to estimate the fair value that is required to be disclosed for financial instruments measured at amortized cost on the balance sheet. This update is effective for public companies for fiscal years beginning after December 15, 2017, including interim periods within those fiscal years. In February 2018, the FASB issued technical corrections related to this update, which addresses common questions regarding the application and adoption of the new guidance and the subsequent amendments. As a result of adopting these updates, equity securities are no longer classified as available for sale securities and changes in fair value are recognized through earnings. Consequently, we recorded a cumulative effect adjustment to retained earnings from accumulated other comprehensive income representing unrealized losses related to equity securities in the amount of $0.2 million , net of tax. In addition, we elected to utilize net asset value as a practical expedient to measure certain other investments, which resulted in an increase to other invested assets with an offset to retained earnings in the amount of $2.3 million , net of tax . Our adoption of both these updates effective January 1, 2018 resulted in a net increase to retained earnings of $2.1 million . See Notes 4 and 5 for additional information. In February 2018, the FASB issued an update to the accounting standard regarding income statement reporting of comprehensive income and reclassification of certain tax effects from accumulated other comprehensive income. The amendments in this update allow a reclassification from accumulated other comprehensive income to retained earnings for stranded tax effects resulting from the TCJA. The provisions of this update are effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. Early adoption is permitted, including adoption in an interim period, for reporting periods for which financial statements have not been available for issuance. We elected to early adopt this update effective January 1, 2018. As a result we recorded a reclassification adjustment from other comprehensive income to retained earnings in the amount of $2.7 million . See Note 9 for additional information regarding the TCJA. Accounting Standards Not Yet Adopted. In February 2016, the FASB issued an update that replaces the existing accounting and disclosure requirements for leases of property, plant and equipment. The update requires lessees to recognize, as of the lease commencement date, assets and liabilities for all leases with lease terms of more than 12 months, which is a change from the current GAAP requirement to recognize only capital leases on the balance sheet. Pursuant to the new standard, the liability initially recognized for the lease obligation is equal to the present value of the lease payments not yet made, discounted over the lease term at the implicit interest rate of the lease, if available, or otherwise at the lessee’s incremental borrowing rate. The lessee is also required to recognize an asset for its right to use the underlying asset for the lease term, based on the liability subject to certain adjustments, such as for initial direct costs. Leases are required to be classified as either operating or finance, with expense on operating leases recorded as a single lease cost on a straight-line basis. For finance leases, interest expense on the lease liability is required to be recognized separately from the straight-line amortization of the right-of-use asset. Quantitative disclosures are required for certain items, including the cost of leases, the weighted-average remaining lease term, the weighted-average discount rate and a maturity analysis of lease liabilities. Additional qualitative disclosures are also required regarding the nature of the leases, such as basis, terms and conditions of: (i) variable interest payments; (ii) extension and termination options; and (iii) residual value guarantees. This update, and the clarifying update issued in July 2018, is effective for public companies for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. Early adoption is permitted. The new standard must be adopted by applying the new guidance as of the beginning of the earliest comparative period presented, using a modified retrospective transition approach with certain optional practical expedients. We are currently in the process of identifying our current leases that are subject to the scope of this standard and evaluating the impact on our financial statements and future disclosures as a result of this update. We expect to recognize right-of-use assets and related obligations upon adoption of this update. In July 2018 the FASB issued a further update containing certain targeted improvements to the accounting and disclosure requirements for leases, including an additional (and optional) transition method to recognize the cumulative-effect adjustment as of the beginning of the period of adoption, rather than recognizing the cumulative-effect adjustment as of the beginning of the earliest comparative period presented. We expect to elect the optional transition method to recognize the cumulative-effect adjustment as of the beginning of the period of adoption. In addition, we expect to elect the practical expedients for transitioning existing leases to the new standard as of the effective date. As a result of applying the practical expedients: (i) we are not required to reassess expired or existing contracts to determine if they contain additional leases; (ii) we are not required to reassess the lease classification for expired and existing leases; and (iii) we are not required to reassess initial direct costs for existing leases. We are currently evaluating the impact of adoption of these updates on our financial statements and future disclosures. See Note 13 of Notes to Consolidated Financial Statements in our 2017 Form 10-K for additional information about our leases. In June 2016, the FASB issued an update to the accounting standard regarding the measurement of credit losses on financial instruments. This update requires that financial assets measured at their amortized cost basis be presented at the net amount expected to be collected. Credit losses relating to available-for-sale debt securities are to be recorded through an allowance for credit losses, rather than a write-down of the asset, with the amount of the allowance limited to the amount by which fair value is less than amortized cost. This update is effective for public companies for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. Early adoption is permitted for the fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. This update is not applicable to credit losses associated with our mortgage insurance policies. We are currently evaluating the impact on our financial statements and future disclosures as a result of this update. In March 2017, the FASB issued an update to the accounting standard regarding receivables. The new standard requires certain premiums on purchased callable debt securities to be amortized to the earliest call date. The amortization period for callable debt securities purchased at a discount will not be impacted. The provisions of this update are effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. Early adoption is permitted, including adoption in an interim period. We do not expect the adoption of this update to have a material effect on our financial statements and disclosures. In August 2018, the FASB issued an update to the accounting standard regarding the accounting for long-duration insurance contracts. The new standard: (i) requires that assumptions used to measure the liability for future policy benefits be reviewed at least annually; (ii) defines and simplifies the measurement of market risk benefits; (iii) simplifies the amortization of deferred acquisition costs; and (iv) enhances the required disclosures about long-duration contracts. This update is effective for fiscal years beginning after December 15, 2020, including interim periods within those fiscal years. Early adoption is permitted. We are currently evaluating the potential impact of the adoption of this update. In August 2018, the FASB issued an update to the accounting standard regarding the disclosure requirements for fair value measurement. The amendments in this update remove certain disclosure requirements regarding transfers between assets as well as the valuation process for Level III assets. This update is effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. Early adoption is permitted, including adoption in an interim period. An entity is permitted to early adopt any removed or modified disclosures and delay adoption of the additional disclosures until their required effective date. We are currently evaluating the impact on our financial statements and future disclosures as a result of this update.

Note 2 - Net Income Per Share

Note 2 - Net Income Per Share	9 Months Ended
	Sep. 30, 2018
Earnings Per Share [Abstract]
Net Income Per Share	Net Income Per Share Basic net income per share is computed by dividing net income by the weighted-average number of common shares outstanding, while diluted net income per share is computed by dividing net income attributable to common shareholders by the sum of the weighted-average number of common shares outstanding and the weighted-average number of dilutive potential common shares. Dilutive potential common shares relate to our share-based compensation arrangements and our outstanding convertible senior notes, if any. The calculation of basic and diluted net income per share was as follows: Three Months Ended Nine Months Ended (In thousands, except per-share amounts) 2018 2017 2018 2017 Net income—basic $ 142,797 $ 65,142 $ 466,232 $ 114,272 Adjustment for dilutive Convertible Senior Notes due 2019, net of tax (1) — — — (215 ) Net income—diluted $ 142,797 $ 65,142 $ 466,232 $ 114,057 Average common shares outstanding—basic 213,309 215,279 214,499 215,194 Dilutive effect of Convertible Senior Notes due 2017 — 16 — 398 Dilutive effect of Convertible Senior Notes due 2019 — — — 611 Dilutive effect of share-based compensation arrangements (2) 4,593 4,096 4,284 4,027 Adjusted average common shares outstanding—diluted 217,902 219,391 218,783 220,230 Net income per share: Basic $ 0.67 $ 0.30 $ 2.17 $ 0.53 Diluted $ 0.66 $ 0.30 $ 2.13 $ 0.52 ______________________ (1) As applicable, includes coupon interest, amortization of discount and fees, and other changes in income that would result from the assumed conversion. Included in the nine months ended September 30, 2017 is a benefit related to our adjustment of estimated accrued expense to actual amounts, resulting from the January 2017 settlement of our obligations on the remaining Convertible Senior Notes due 2019. (2) The following number of shares of our common stock equivalents issued under our share-based compensation arrangements were not included in the calculation of diluted net income (loss) per share because they were anti-dilutive: Three Months Ended Nine Months Ended (In thousands) 2018 2017 2018 2017 Shares of common stock equivalents 338 676 338 440

Note 3 - Segment Reporting

Note 3 - Segment Reporting	9 Months Ended
	Sep. 30, 2018
Segment Reporting [Abstract]
Segment Reporting	Segment Reporting We have two strategic business units that we manage separately—Mortgage Insurance and Services. Adjusted pretax operating income (loss) for each segment represents segment results on a standalone basis; therefore, inter-segment eliminations and reclassifications required for consolidated GAAP presentation have not been reflected. We allocate to our Mortgage Insurance segment: (i) corporate expenses based on its forecasted annual percentage of total revenue, which approximates the estimated percentage of time spent on the Mortgage Insurance segment; (ii) all interest expense (except for interest expense related to an intercompany note with terms consistent with the original issued amount of $300 million from the Senior Notes due 2019 that were used to fund our purchase of Clayton, all of which is allocated to our Services segment); and (iii) all corporate cash and investments. We allocate to our Services segment: (i) corporate expenses based on its forecasted annual percentage of total revenue, which approximates the estimated percentage of time spent on the Services segment and (ii) the allocated interest expense related to the intercompany note as described above. No material corporate cash or investments are allocated to the Services segment. Inter-segment activities are recorded at market rates for segment reporting and eliminated in consolidation. Contract underwriting activities are reported within our Services segment. We include underwriting-related expenses for mortgage insurance, based on a pro-rata volume of mortgage applications excluding third-party contract underwriting services, in our Mortgage Insurance segment’s other operating expenses before corporate allocations. We include underwriting-related expenses for third-party contract underwriting services, based on a pro-rata volume of mortgage applications, in our Services segment’s cost of services and other operating expenses before corporate allocations, as applicable. Adjusted Pretax Operating Income (Loss) Our senior management, including our Chief Executive Officer (Radian’s chief operating decision maker), uses adjusted pretax operating income (loss) as our primary measure to evaluate the fundamental financial performance of each of Radian’s business segments and to allocate resources to the segments. Adjusted pretax operating income (loss) is defined as pretax income (loss) from continuing operations excluding the effects of net gains (losses) on investments and other financial instruments, loss on induced conversion and debt extinguishment, acquisition-related expenses, amortization or impairment of goodwill and other acquired intangible assets, and net impairment losses recognized in earnings and losses from the sale of lines of business. Although adjusted pretax operating income excludes certain items that have occurred in the past and are expected to occur in the future, the excluded items represent those that are: (i) not viewed as part of the operating performance of our primary activities or (ii) not expected to result in an economic impact equal to the amount reflected in pretax income. These adjustments, along with the reasons for their treatment, are described below. (1) Net gains (losses) on investments and other financial instruments. The recognition of realized investment gains or losses can vary significantly across periods as the activity is highly discretionary based on the timing of individual securities sales due to such factors as market opportunities, our tax and capital profile and overall market cycles. Unrealized investment gains and losses arise primarily from changes in the market value of our investments that are classified as trading or equity securities. These valuation adjustments may not necessarily result in realized economic gains or losses. Trends in the profitability of our fundamental operating activities can be more clearly identified without the fluctuations of these realized and unrealized gains or losses. We do not view them to be indicative of our fundamental operating activities. Therefore, these items are excluded from our calculation of adjusted pretax operating income (loss). (2) Loss on induced conversion and debt extinguishment. Gains or losses on early extinguishment of debt and losses incurred to purchase our convertible debt prior to maturity are discretionary activities that are undertaken in order to take advantage of market opportunities to strengthen our financial and capital positions; therefore, we do not view these activities as part of our operating performance. Such transactions do not reflect expected future operations and do not provide meaningful insight regarding our current or past operating trends. Therefore, these items are excluded from our calculation of adjusted pretax operating income (loss). (3) Acquisition-related expenses. Acquisition-related expenses represent the costs incurred to effect an acquisition of a business (i.e., a business combination). Because we pursue acquisitions on a strategic and selective basis and not in the ordinary course of our business, we do not view acquisition-related expenses as a consequence of a primary business activity. Therefore, we do not consider these expenses to be part of our operating performance and they are excluded from our calculation of adjusted pretax operating income (loss). (4) Amortization or impairment of goodwill and other acquired intangible assets. Amortization of acquired intangible assets represents the periodic expense required to amortize the cost of acquired intangible assets over their estimated useful lives. Acquired intangible assets with an indefinite useful life are also periodically reviewed for potential impairment, and impairment adjustments are made whenever appropriate. These charges are not viewed as part of the operating performance of our primary activities and therefore are excluded from our calculation of adjusted pretax operating income (loss). (5) Net impairment losses recognized in earnings and losses from the sale of lines of business . The recognition of net impairment losses on investments and the impairment of other long-lived assets does not result in a cash payment and can vary significantly in both amount and frequency, depending on market credit cycles and other factors. Losses from the sale of lines of business are highly discretionary as a result of strategic restructuring decisions, and generally do not occur in the normal course of our business. We do not view these losses to be indicative of our fundamental operating activities. Therefore, whenever these losses occur, we exclude them from our calculation of adjusted pretax operating income (loss). Summarized operating results for our segments for the periods indicated, are as follows: Three Months Ended Nine Months Ended (In thousands) 2018 2017 2018 2017 Mortgage Insurance Net premiums written—insurance (1) $ 253,827 $ 247,810 $ 743,765 $ 713,782 (Increase) decrease in unearned premiums 1,655 (11,108 ) 3,235 (26,184 ) Net premiums earned—insurance 255,482 236,702 747,000 687,598 Net investment income 38,824 32,540 110,227 93,643 Other income 725 760 2,153 2,118 Total (2) 295,031 270,002 859,380 783,359 Provision for losses 20,715 35,980 77,468 100,926 Policy acquisition costs 5,667 5,554 18,780 18,406 Other operating expenses before corporate allocations 33,152 36,941 98,302 114,169 Total (3) 59,534 78,475 194,550 233,501 Adjusted pretax operating income before corporate allocations 235,497 191,527 664,830 549,858 Allocation of corporate operating expenses 19,794 11,737 58,507 41,817 Allocation of interest expense 11,083 11,282 32,552 34,539 Adjusted pretax operating income $ 204,620 $ 168,508 $ 573,771 $ 473,502 ______________________ (1) Net of ceded premiums written under the QSR Program and the Single Premium QSR Program. See Note 7 for additional information. (2) Excludes net losses on investments and other financial instruments of $4.5 million and $30.8 million for the three and nine months ended September 30, 2018 , and net gains on investments and other financial instruments of $2.5 million and $5.0 million for the three and nine months ended September 30, 2017 , not included in adjusted pretax operating income. (3) Includes inter-segment expenses as follows: Three Months Ended Nine Months Ended (In thousands) 2018 2017 2018 2017 Inter-segment expenses $ 766 $ 1,491 $ 2,653 $ 5,726 Three Months Ended Nine Months Ended (In thousands) 2018 2017 2018 2017 Services Net premiums earned—insurance (1) $ 2,949 $ — $ 5,325 $ — Services revenue (2) 37,332 41,062 109,211 121,126 Net investment income (1) 171 — 197 — Other income (1) 449 — 844 — Total (2) 40,901 41,062 115,577 121,126 Provision for losses (1) 242 — 295 — Cost of services 26,001 27,544 73,628 82,196 Other operating expenses before corporate allocations 14,772 12,781 39,531 38,188 Restructuring and other exit costs (3) 407 5,463 1,987 5,463 Total 41,422 45,788 115,441 125,847 Adjusted pretax operating income (loss) before corporate allocations (521 ) (4,726 ) 136 (4,721 ) Allocation of corporate operating expenses 2,948 3,730 8,742 10,852 Allocation of interest expense 4,452 4,433 13,354 13,293 Adjusted pretax operating income (loss) $ (7,921 ) $ (12,889 ) $ (21,960 ) $ (28,866 ) ______________________ (1) Results from inclusion of the operations of EnTitle Direct, a national title insurance and settlement services company, acquired in March 2018. (2) Includes inter-segment revenues as follows: Three Months Ended Nine Months Ended (In thousands) 2018 2017 2018 2017 Inter-segment revenues $ 766 $ 1,491 $ 2,653 $ 5,726 (3) Does not include impairment of long-lived assets and loss from the sale of a business line, which are not components of adjusted pretax operating income. Selected balance sheet information for our segments, as of the periods indicated, is as follows: At September 30, 2018 (In thousands) Mortgage Insurance Services Total Total assets $ 6,095,101 $ 174,383 $ 6,269,484 At December 31, 2017 (In thousands) Mortgage Insurance Services Total Total assets $ 5,733,918 $ 166,963 $ 5,900,881 The reconciliation of adjusted pretax operating income to consolidated pretax income is as follows: Three Months Ended Nine Months Ended (In thousands) 2018 2017 2018 2017 Adjusted pretax operating income (loss): Mortgage Insurance (1) $ 204,620 $ 168,508 $ 573,771 $ 473,502 Services (1) (7,921 ) (12,889 ) (21,960 ) (28,866 ) Total adjusted pretax operating income 196,699 155,619 551,811 444,636 Net gains (losses) on investments and other financial instruments (4,480 ) 2,480 (30,771 ) 4,960 Loss on induced conversion and debt extinguishment — (45,766 ) — (51,469 ) Acquisition-related expenses (2) (2 ) (54 ) (418 ) (126 ) Impairment of goodwill — — — (184,374 ) Amortization and impairment of other acquired intangible assets (3,472 ) (2,890 ) (8,968 ) (25,042 ) Impairment of other long-lived assets and loss from the sale of a business line (3) (4,057 ) (6,575 ) (3,953 ) (6,575 ) Consolidated pretax income $ 184,688 $ 102,814 $ 507,701 $ 182,010 ______________________ (1) Includes inter-segment expenses and revenues as listed in the notes to the preceding tables. (2) Acquisition-related expenses represent expenses incurred to effect the acquisition of a business, net of adjustments to accruals previously recorded for acquisition expenses. (3) Included within restructuring and other exit costs. See Note 1.

Note 4 - Fair Value of Financia

Note 4 - Fair Value of Financial Instruments	9 Months Ended
	Sep. 30, 2018
Fair Value Disclosures [Abstract]
Fair Value of Financial Instruments	Fair Value of Financial Instruments Available for sale securities, trading securities, equity securities and certain other assets are recorded at fair value. All changes in the fair value of trading securities, equity securities and certain other assets are included in our condensed consolidated statements of operations. All changes in the fair value of available for sale securities are recorded in accumulated other comprehensive income. As a result of our implementation of the update to the standard for the accounting of financial instruments, we elected to measure certain other investments using the net asset value as a practical expedient. See Note 1 “—Significant Accounting Policies— Recent Accounting Pronouncements — Accounting Standards Adopted During 2018 ” for additional information. There were no other changes to our fair value methodologies during the nine months ended September 30, 2018 . In accordance with GAAP, we established a three-level valuation hierarchy for disclosure of fair value measurements based on the transparency of inputs to the valuation of an asset or liability as of the measurement date. The hierarchy gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (Level I measurements) and the lowest priority to unobservable inputs (Level III measurements). The level in the fair value hierarchy within which the fair value measurement falls is determined based on the lowest level input that is significant to the measurement in its entirety. The three levels of the fair value hierarchy are defined below: Level I — Unadjusted quoted prices for identical assets or liabilities in active markets that are accessible at the measurement date for identical, unrestricted assets or liabilities; Level II — Prices or valuations based on observable inputs other than quoted prices in active markets for identical assets and liabilities; and Level III — Prices or valuations that require inputs that are both significant to the fair value measurement and unobservable. Level III inputs are used to measure fair value only to the extent that observable inputs are not available. The level of market activity used to determine the fair value hierarchy is based on the availability of observable inputs market participants would use to price an asset or a liability, including market value price observations. We provide a qualitative description of the valuation techniques and inputs used for recurring and non-recurring fair value measurements in our audited financial statements and notes thereto included in our 2017 Form 10-K. These unaudited condensed consolidated financial statements should be read in conjunction with the audited financial statements and notes thereto included in our 2017 Form 10-K. The following is a list of assets that are measured at fair value by hierarchy level as of September 30, 2018 : (In thousands) Level I Level II Total Assets at Fair Value Investment Portfolio: U.S. government and agency securities $ 234,507 $ 21,545 $ 256,052 State and municipal obligations — 345,029 345,029 Money market instruments 156,396 — 156,396 Corporate bonds and notes — 2,480,097 2,480,097 RMBS — 272,125 272,125 CMBS — 576,829 576,829 Other ABS — 674,509 674,509 Equity securities 145,198 3,514 148,712 Other investments (1) — 149,265 149,265 Total Investments at Fair Value (2) 536,101 4,522,913 5,059,014 (3) Total Assets at Fair Value $ 536,101 $ 4,522,913 $ 5,059,014 (3) ______________________ (1) Comprising short-term certificates of deposit and commercial paper. (2) Does not include certain other invested assets ( $3.6 million ), primarily invested in limited partnership investments valued using the net asset value as a practical expedient. Includes cash collateral held under securities lending agreements ( $31.8 million ) reinvested in money market instruments. (3) Includes $34.4 million of securities loaned to third-party Borrowers under securities lending agreements, classified as other assets in our consolidated balance sheets. See Note 5 for more information. The following is a list of assets that are measured at fair value by hierarchy level as of December 31, 2017 : (In thousands) Level I Level II Total Assets at Fair Value Investment Portfolio: U.S. government and agency securities $ 124,969 $ 8,023 $ 132,992 State and municipal obligations — 386,111 386,111 Money market instruments 213,357 — 213,357 Corporate bonds and notes — 2,304,017 2,304,017 RMBS — 216,749 216,749 CMBS — 503,955 503,955 Other ABS — 676,158 676,158 Foreign government and agency securities — 36,448 36,448 Equity securities 175,205 860 176,065 Other investments (1) — 25,720 25,720 Total Investments at Fair Value (2) 513,531 4,158,041 4,671,572 (3) Total Assets at Fair Value $ 513,531 $ 4,158,041 $ 4,671,572 (3) ______________________ (1) Comprising short-term certificates of deposit and commercial paper. (2) Does not include certain other invested assets ( $0.3 million ), primarily invested in limited partnerships, accounted for as cost-method investments and not measured at fair value. Includes cash collateral held under securities lending agreements ( $19.4 million ) reinvested in money market instruments. (3) Includes $28.0 million of securities loaned to third-party Borrowers under securities lending agreements, classified as other assets in our consolidated balance sheets. See Note 5 for more information. There were no Level III assets measured at fair value at September 30, 2018 or December 31, 2017 , and no Level III liabilities. There were no investment transfers between Level I, Level II or Level III for the three and nine months ended September 30, 2018 and 2017 . Other Fair Value Disclosure The carrying value and estimated fair value of other selected assets and liabilities not carried at fair value in our condensed consolidated balance sheets were as follows as of the dates indicated: September 30, 2018 December 31, 2017 (In thousands) Carrying Amount Estimated Fair Value Carrying Amount Estimated Fair Value Assets: Other invested assets (1) $ — $ — $ 334 $ 3,226 Liabilities: Senior notes 1,029,511 1,053,528 1,027,074 1,093,934 ______________________ (1)

Note 5 - Investments

Note 5 - Investments	9 Months Ended
	Sep. 30, 2018
Investments [Abstract]
Investments	Investments Available for Sale Securities Our available for sale securities within our investment portfolio consisted of the following as of the dates indicated: September 30, 2018 (In thousands) Amortized Cost Fair Value Gross Unrealized Gains Gross Unrealized Losses Fixed-maturities available for sale: U.S. government and agency securities $ 75,369 $ 72,645 (1) $ — $ 2,724 State and municipal obligations 140,877 139,986 1,859 2,750 Corporate bonds and notes 2,158,991 2,108,779 4,262 54,474 RMBS 258,152 250,056 (2) 4 8,100 CMBS 536,982 525,858 363 11,487 Other ABS 675,686 673,418 967 3,235 Total securities available for sale $ 3,846,057 $ 3,770,742 (3) $ 7,455 $ 82,770 ______________________ (1) Includes securities with a fair value of $10.5 million serving as collateral for FHLB advances. (2) Includes securities with a fair value of $66.1 million serving as collateral for FHLB advances. (3) Includes $7.0 million of fixed-maturity securities loaned to third-party Borrowers under securities lending agreements, classified as other assets in our condensed consolidated balance sheets, as further described below. December 31, 2017 (In thousands) Amortized Cost Fair Value Gross Unrealized Gains Gross Unrealized Losses Fixed-maturities available for sale: U.S. government and agency securities $ 69,667 $ 69,396 $ 96 $ 367 State and municipal obligations 156,587 161,722 5,834 699 Corporate bonds and notes 1,869,318 1,894,886 33,620 8,052 RMBS 189,455 187,229 636 2,862 CMBS 451,595 453,394 3,409 1,610 Other ABS 672,715 674,548 2,655 822 Foreign government and agency securities 31,417 32,207 823 33 Total fixed-maturities available for sale 3,440,754 3,473,382 (1) 47,073 14,445 Equity securities available for sale (2) 176,349 176,065 (1) 1,705 1,989 Total debt and equity securities available for sale $ 3,617,103 $ 3,649,447 $ 48,778 $ 16,434 ______________________ (1) Includes $14.7 million of fixed maturity securities and $13.2 million of equity securities loaned to third-party Borrowers under securities lending agreements, classified as other assets in our condensed consolidated balance sheets, as further described below. (2) Primarily consists of investments in fixed-income and equity exchange-traded funds and publicly-traded business development company equities. For the nine months ended September 30, 2018 , we did not transfer any securities from the available for sale or trading categories. Gross Unrealized Losses and Fair Value of Available for Sale Securities For securities deemed “available for sale” and that are in an unrealized loss position, the following tables show the gross unrealized losses and fair values, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position, as of the dates indicated. Included in the amounts as of September 30, 2018 and December 31, 2017 are loaned securities under securities lending agreements that are classified as other assets in our condensed consolidated balance sheets, as further described below. September 30, 2018 ( $ in thousands ) Description of Securities Less Than 12 Months 12 Months or Greater Total # of securities Fair Value Unrealized Losses # of securities Fair Value Unrealized Losses # of securities Fair Value Unrealized Losses U.S. government and agency securities 9 $ 39,342 $ 1,944 5 $ 11,758 $ 780 14 $ 51,100 $ 2,724 State and municipal obligations 25 76,914 2,166 6 13,172 584 31 90,086 2,750 Corporate bonds and notes 383 1,619,774 43,840 35 157,323 10,634 418 1,777,097 54,474 RMBS 23 169,259 3,271 28 80,158 4,829 51 249,417 8,100 CMBS 78 423,684 10,098 11 26,830 1,389 89 450,514 11,487 Other ABS 118 461,978 3,002 16 24,890 233 134 486,868 3,235 Total 636 $ 2,790,951 $ 64,321 101 $ 314,131 $ 18,449 737 $ 3,105,082 $ 82,770 December 31, 2017 ( $ in thousands ) Description of Securities Less Than 12 Months 12 Months or Greater Total # of securities Fair Value Unrealized Losses # of securities Fair Value Unrealized Losses # of securities Fair Value Unrealized Losses U.S. government and agency securities 6 $ 23,309 $ 129 3 $ 9,799 $ 238 9 $ 33,108 $ 367 State and municipal obligations 21 65,898 699 — — — 21 65,898 699 Corporate bonds and notes 152 672,318 4,601 32 139,105 3,451 184 811,423 8,052 RMBS 8 19,943 204 26 101,812 2,658 34 121,755 2,862 CMBS 35 139,353 1,395 4 3,518 215 39 142,871 1,610 Other ABS 92 260,864 777 7 8,297 45 99 269,161 822 Foreign government and agency securities 5 7,397 33 — — — 5 7,397 33 Equity securities 13 149,785 1,989 — — — 13 149,785 1,989 Total 332 $ 1,338,867 $ 9,827 72 $ 262,531 $ 6,607 404 $ 1,601,398 $ 16,434 Although we held securities in an unrealized loss position as of September 30, 2018 , we did not consider those securities to be other-than-temporarily impaired as of such date. For all investment categories, the unrealized losses of 12 months or greater duration as of September 30, 2018 were generally caused by interest rate or credit spread movements since the purchase date, and as such, we expect to recover the amortized cost basis of these securities. As of September 30, 2018 , we did not have the intent to sell any debt securities in an unrealized loss position, and we determined that it is more likely than not that we will not be required to sell the securities before recovery of their cost basis, which may be at maturity; therefore, we did not consider these investments to be other-than-temporarily impaired at September 30, 2018 . Other-than-temporary Impairment Activity. To the extent we determine that a security is deemed to have had an other-than-temporary impairment, an impairment loss is recognized. During the nine months ended September 30, 2018 , we recorded other-than-temporary impairment losses in earnings of $1.7 million due to our intent to sell certain: (i) corporate bonds and notes and (ii) state and municipal obligations, each with an amortized cost basis greater than their fair value. While we recognized other-than-temporary impairment losses related to our intent to sell securities, there were no credit-related impairment losses recognized in earnings during the nine months ended September 30, 2018 . During the nine months ended September 30, 2017 , we recorded other-than-temporary impairment losses in earnings of $1.0 million , including $0.5 million related to a convertible note of a non-public company issuer included in debt securities and $0.5 million related to a privately-placed equity security, because we concluded that we would not recover the amortized cost basis of these securities due to credit deterioration. There were no other-than-temporary impairment losses recognized in accumulated other comprehensive income (loss) during the nine months ended September 30, 2018 or the year ended December 31, 2017 . Trading Securities The trading securities within our investment portfolio, which are recorded at fair value, consisted of the following as of the dates indicated: (In thousands) September 30, December 31, Trading securities: State and municipal obligations $ 185,494 $ 214,841 Corporate bonds and notes 235,422 307,271 RMBS 22,069 29,520 CMBS 50,971 50,561 Foreign government and agency securities — 4,241 Total $ 493,956 $ 606,434 (1) ______________________ (1) At December 31, 2017, includes a de minimis amount of loaned securities under securities lending agreements that are classified as other assets in our consolidated balance sheets, as further described below. Securities Lending Agreements During the third quarter of 2017, we commenced participation in a securities lending program whereby we loan certain securities in our investment portfolio to Borrowers for short periods of time. These securities lending agreements are collateralized financing arrangements whereby we transfer securities to third parties through an intermediary in exchange for cash or other securities. In all of our securities lending agreements, the securities we transfer to Borrowers (loaned securities) may be transferred or loaned by the Borrowers; however, we maintain effective control over all loaned securities, including: (i) retaining ownership of the securities; (ii) receiving the related investment or other income; and (iii) having the right to request the return of the loaned securities at any time. Although we report such securities at fair value within other assets in our condensed consolidated balance sheets, the detailed information regarding investments provided in this Note includes these securities. Under our securities lending agreements, the Borrower is required to provide to us collateral, consisting of cash or securities, in amounts generally equal to or exceeding (i) 102% of the value of the loaned securities ( 105% in the case of foreign securities) or (ii) another agreed-upon percentage not less than 100% of the market value of the loaned securities. Any cash collateral we receive may be invested in liquid assets. The Borrower generally may return the loaned securities to us at any time, which would require us to return the collateral within the standard settlement period for the loaned securities on the principal exchange or market in which the securities are traded. We manage this liquidity risk associated with cash collateral by maintaining the cash collateral in a short-term money-market fund with daily availability. The credit risk under these programs is reduced by the amounts of collateral received. On a daily basis, the value of the underlying securities that we have loaned to the Borrowers is compared to the value of cash and securities collateral we received from the Borrowers, and additional cash or securities are requested or returned, as applicable. In addition, we are indemnified against counterparty credit risk by the intermediary. Key balances related to our securities lending agreements consisted of the following as of the dates indicated: (In thousands) September 30, December 31, Loaned securities (1) : U.S. government and agency securities $ 90 $ — Corporate bonds and notes 7,427 13,862 Foreign government and agency securities — 867 Equity securities 26,847 13,235 Total loaned securities, at fair value $ 34,364 $ 27,964 Total loaned securities, at amortized cost $ 34,651 $ 27,846 Securities collateral on deposit from Borrowers (2) 3,367 9,342 Reinvested cash collateral, at estimated fair value (3) 31,799 19,357 ______________________ (1) Our securities loaned under securities lending agreements are reported at fair value within other assets in our condensed consolidated balance sheets. All of our securities lending agreements are classified as overnight and revolving. None of the amounts are subject to offsetting. (2) Securities collateral on deposit with us from Borrowers may not be transferred or re-pledged unless the Borrower is in default, and is therefore not reflected in our condensed consolidated financial statements. (3) All cash collateral received has been reinvested in accordance with the securities lending agreements and is included in short-term investments in our condensed consolidated balance sheets. Amounts payable on the return of cash collateral under securities lending agreements are included within other liabilities in our condensed consolidated balance sheets. Net Gains (Losses) on Investments and Other Financial Instruments Net gains (losses) on investments and other financial instruments consisted of: Three Months Ended Nine Months Ended (In thousands) 2018 2017 2018 2017 Net realized gains (losses): Fixed-maturities available for sale (1) $ (4,219 ) $ 137 $ (9,030 ) $ (3,552 ) Equity securities (69 ) 33 571 418 Trading securities (260 ) (223 ) (910 ) (6,266 ) Short-term investments 7 14 — (18 ) Other invested assets 83 — 346 — Other gains (losses) 11 7 46 25 Net realized gains (losses) on investments (4,447 ) (32 ) (8,977 ) (9,393 ) Other-than-temporary impairment losses (900 ) — (1,744 ) (1,000 ) Net unrealized gains (losses) on investment securities (2) 1,405 2,353 (17,132 ) 14,517 Total net gains (losses) on investments (3,942 ) 2,321 (27,853 ) 4,124 Net gains (losses) on other financial instruments (538 ) 159 (2,918 ) 836 Net gains (losses) on investments and other financial instruments $ (4,480 ) $ 2,480 $ (30,771 ) $ 4,960 ______________________ (1) Components of net realized gains (losses) on fixed-maturities available for sale include: Three Months Ended Nine Months Ended (In thousands) 2018 2017 2018 2017 Gross investment gains from sales and redemptions $ 814 $ 419 $ 1,831 $ 5,150 Gross investment losses from sales and redemptions (5,033 ) (282 ) (10,861 ) (8,702 ) (2) These amounts include unrealized gains (losses) on investment securities other than securities available for sale. For the three and nine months ended September 30, 2017 , the unrealized gains (losses) on investments exclude the net change in unrealized gains and losses on equity securities. Prior to the implementation of the update to the standard for the accounting of financial instruments effective January 1, 2018, the unrealized gains (losses) associated with equity securities were classified in accumulated other comprehensive income. Net Unrealized Gains (Losses) on Investment Securities The net changes in unrealized gains (losses) from trading securities and equity securities still held at period end were as follows for the periods indicated: Three Months Ended Nine Months Ended (In thousands) 2018 2017 2018 2017 Net changes in unrealized gains (losses) (1) : Equity securities $ 2,971 $ — $ 2,238 $ — Trading securities (2) (2,622 ) 2,694 (18,506 ) 10,011 Net changes in unrealized gains (losses) on investment securities $ 349 $ 2,694 $ (16,268 ) $ 10,011 ______________________ (1) Related only to securities still held at period end. All amounts shown are included in net gains (losses) on investments and other financial instruments. Prior to the implementation of the update to the standard for the accounting of financial instruments effective January 1, 2018, the unrealized losses associated with equity securities were classified in accumulated other comprehensive income. (2) Includes a de minimis amount of net changes in unrealized gains (losses) related to short-term securities. Contractual Maturities The contractual maturities of fixed-maturity investments available for sale were as follows: September 30, 2018 Available for Sale (In thousands) Amortized Cost Fair Value Due in one year or less (1) $ 51,228 $ 51,101 Due after one year through five years (1) 823,314 809,555 Due after five years through 10 years (1) 1,099,144 1,065,556 Due after 10 years (1) 401,551 395,198 RMBS (2) 258,152 250,056 CMBS (2) 536,982 525,858 Other ABS (2) 675,686 673,418 Total (3) $ 3,846,057 $ 3,770,742 ______________________ (1) Actual maturities may differ as a result of calls before scheduled maturity. (2) RMBS, CMBS and Other ABS are shown separately, as they are not due at a single maturity date. (3) Includes securities loaned under securities lending agreements. Other At September 30, 2018 , Radian had an aggregate amount of $76.6 million of U.S. government and agency securities and RMBS, classified as fixed-maturities available for sale within our investment securities portfolio, serving as collateral for our FHLB advances. There were no FHLB advances outstanding at December 31, 2017 . See Note 12 for additional information. Securities on deposit with various state insurance commissioners amounted to $15.4 million and $11.8 million at September 30, 2018 and December 31, 2017

Note 6 - Goodwill and Other Acq

Note 6 - Goodwill and Other Acquired Intangible Assets, Net	9 Months Ended
	Sep. 30, 2018
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Other Intangible Assets, Net	Goodwill and Other Acquired Intangible Assets, Net All of our goodwill and other acquired intangible assets relate to our Services segment. The following table shows the changes in the carrying amount of goodwill for the year-to-date periods ended September 30, 2018 and December 31, 2017 : (In thousands) Goodwill Accumulated Impairment Losses Net Balance at December 31, 2016 $ 197,265 $ (2,095 ) $ 195,170 Goodwill acquired 126 — 126 Impairment losses — (184,374 ) (184,374 ) Balance at December 31, 2017 197,391 (186,469 ) 10,922 Goodwill acquired — — — Impairment losses — — — Balance at September 30, 2018 $ 197,391 $ (186,469 ) $ 10,922 Accounting Policy Considerations Goodwill is an asset representing the estimated future economic benefits arising from the assets we have acquired that are not individually identified and separately recognized, and includes the value of the discounted expected future cash flows from these businesses, the workforce, expected synergies with our other affiliates and other unidentifiable intangible assets. Goodwill is deemed to have an indefinite useful life and is subject to review for impairment annually, or more frequently, whenever events and circumstances indicate potential impairment. For purposes of performing our goodwill impairment test, we have concluded that the Services segment constitutes one reporting unit to which all of our recorded goodwill is related. In the third quarter of 2018, we performed a qualitative assessment of goodwill and other acquired intangible assets and considered factors such as: (i) the decline in and timing of revenues during 2018 for the Services segment (as compared to the forecasted amounts for the same period); (ii) the current carrying amount of reporting unit and asset groupings; and (iii) our recent goodwill impairment test and recognition of impairment charges. Based on our qualitative assessment in the third quarter of 2018, we concluded that it is not “more likely than not” that the fair value of the Services reporting unit is less than its carrying amount as of September 30, 2018. In addition, we concluded that the carrying amounts of other acquired intangible assets are supported by projected earnings. We monitor the performance of the Services segment each quarter, including through our annual impairment assessment planned for the fourth quarter of 2018. For additional information on our accounting policies for goodwill and other acquired intangible assets, see Note 2 of Notes to Consolidated Financial Statements in our 2017 Form 10-K. Other Acquired Intangible Assets The following is a summary of the gross and net carrying amounts and accumulated amortization of our other acquired intangible assets as of the periods indicated: September 30, 2018 (In thousands) Original Amount Acquired Accumulated Amortization and Impairment Net Carrying Amount Client relationships (1) $ 82,530 $ (46,569 ) $ 35,961 Technology (2) 15,250 (11,567 ) 3,683 Trade name and trademarks 8,340 (3,649 ) 4,691 Client backlog 6,680 (6,680 ) — Non-competition agreements 185 (175 ) 10 Licenses 463 (23 ) 440 Total $ 113,448 $ (68,663 ) $ 44,785 December 31, 2017 (In thousands) Original Amount Acquired Accumulated Amortization Net Carrying Amount Client relationships (1) $ 82,530 $ (41,596 ) $ 40,934 Technology (2) 15,250 (8,922 ) 6,328 Trade name and trademarks 8,340 (3,003 ) 5,337 Client backlog 6,680 (6,006 ) 674 Non-competition agreements 185 (168 ) 17 Total $ 112,985 $ (59,695 ) $ 53,290 ______________________ (1) Includes a cumulative impairment charge of $14.9 million . (2) Includes a cumulative impairment charge of $0.9 million . The estimated aggregate amortization expense for the remainder of 2018 and thereafter is as follows (in thousands): 2018 $ 3,461 2019 8,146 2020 6,827 2021 5,413 2022 4,881 2023 4,430 Thereafter 11,627 Total $ 44,785 Generally, for tax purposes, substantially all of our goodwill and other acquired intangible assets are deductible and will be amortized over a period of 15 years

Note 7 - Reinsurance

Note 7 - Reinsurance	9 Months Ended
	Sep. 30, 2018
Reinsurance Disclosures [Abstract]
Reinsurance	Reinsurance Radian’s reinsurance programs represent a component of our long-term risk distribution strategy. From time to time, we have entered into reinsurance transactions as part of our strategy to manage our capital position and risk profile, which includes managing Radian Guaranty’s position under the PMIERs financial requirements. The credit that we receive under the PMIERs financial requirements for these transactions is subject to periodic review by the GSEs. The effect of reinsurance on our mortgage insurance net premiums written and earned is as follows: Three Months Ended Nine Months Ended (In thousands) 2018 2017 2018 2017 Net premiums written—insurance: Direct $ 278,118 $ 265,927 $ 819,812 $ 766,219 Ceded (1) (24,291 ) (18,117 ) (76,047 ) (52,437 ) Net premiums written—insurance $ 253,827 $ 247,810 $ 743,765 $ 713,782 Net premiums earned—insurance: Direct $ 271,487 $ 250,541 $ 795,811 $ 729,832 Assumed 6 7 19 21 Ceded (1) (16,011 ) (13,846 ) (48,830 ) (42,255 ) Net premiums earned—insurance $ 255,482 $ 236,702 $ 747,000 $ 687,598 ______________________ (1) Net of profit commission. Single Premium QSR Program In the first quarter of 2016, Radian Guaranty entered into the 2016 Single Premium QSR Agreement with a panel of third-party reinsurers. Effective December 31, 2017, we amended the 2016 Single Premium QSR Agreement to increase the amount of ceded risk on performing loans under the agreement from 35% to 65% for the 2015 through 2017 vintages. As of the effective date, the result of this amendment increased the amount of risk ceded on Single Premium Policies, including for the purposes of calculating any future ceding commissions and profit commissions that Radian Guaranty will earn. It will also increase the future amounts of our ceded premiums and ceded losses. As of January 1, 2018, Radian Guaranty is no longer ceding NIW under this arrangement. RIF ceded under the 2016 Single Premium QSR Agreement was $6.4 billion and $4.3 billion as of September 30, 2018 and 2017 , respectively. In October 2017, we entered into the 2018 Single Premium QSR Agreement with a panel of third-party reinsurers. Under the 2018 Single Premium QSR Agreement, we expect to cede 65% of our Single Premium NIW beginning with the business written in January 2018, subject to certain conditions that may affect the amount ceded, including a limitation on ceded premium written equal to $335 million for policies issued between January 1, 2018 and December 31, 2019. Notwithstanding this limitation, the parties may mutually agree to amend the agreement, including with respect to any limitations on the amounts of insurance that may be ceded. RIF ceded under the 2018 Single Premium QSR Agreement was $1.6 billion as of September 30, 2018 . QSR Program In 2012, Radian Guaranty entered into the QSR Program with a third-party reinsurance provider. Radian Guaranty has ceded the maximum amount permitted under the QSR Program and is no longer ceding NIW under these transactions. RIF ceded under the QSR Program was $1.0 billion and $1.3 billion as of September 30, 2018 and 2017 , respectively. See Note 8 of Notes to Consolidated Financial Statements in our 2017 Form 10-K for more information about our reinsurance transactions. The following tables show the amounts related to the Single Premium QSR Program and the QSR Program for the periods indicated: Single Premium QSR Program Three Months Ended Nine Months Ended (In thousands) 2018 2017 2018 2017 Ceded premiums written (1) $ 20,920 $ 13,248 $ 64,818 $ 36,064 Ceded premiums earned (1) 11,181 6,771 32,718 18,941 Ceding commissions written 8,070 5,156 24,571 14,002 Ceding commissions earned (2) 5,635 3,536 16,546 9,721 Ceded losses 1,060 406 2,973 1,443 QSR Program Three Months Ended Nine Months Ended (In thousands) 2018 2017 2018 2017 Ceded premiums written (1) $ 3,174 $ 4,621 $ 10,621 $ 15,137 Ceded premiums earned (1) 4,632 6,826 15,502 22,064 Ceding commissions written 918 1,323 3,058 4,328 Ceding commissions earned (2) 2,738 2,925 9,182 10,198 Ceded losses 131 257 383 517 ______________________ (1) Net of profit commission. (2)

Note 8 - Other Assets

Note 8 - Other Assets	9 Months Ended
	Sep. 30, 2018
Other Assets [Abstract]
Other Assets	Other Assets The following table shows the components of other assets as of the dates indicated: (In thousands) September 30, December 31, Deposit with the IRS (Note 9) $ 88,557 $ 88,557 Corporate-owned life insurance 82,800 85,862 Internal-use software (1) 51,191 48,751 Property and equipment (2) 38,060 38,291 Accrued investment income 34,430 31,389 Loaned securities 34,364 27,964 Unbilled receivables 19,580 22,257 Deferred policy acquisition costs 16,922 16,987 Reinsurance recoverables 13,542 8,492 Other 35,826 39,299 Total other assets $ 415,272 $ 407,849 ______________________ (1) Internal-use software at cost, less accumulated amortization of $57.2 million and $48.4 million at September 30, 2018 and December 31, 2017 , respectively. Amortization expense was $2.9 million and $2.7 million for the three-month periods ended September 30, 2018 and 2017 , respectively, and $8.6 million and $7.9 million for the nine-month periods ended September 30, 2018 and 2017 , respectively. (2) Property and equipment at cost, less accumulated depreciation of $61.0 million and $57.6 million at September 30, 2018 and December 31, 2017 , respectively. Depreciation expense was $2.1 million and $1.9 million for the three-month periods ended September 30, 2018 and 2017 , respectively, and $5.9 million and $4.9 million for the nine-month periods ended September 30, 2018 and 2017

Note 9 - Income Taxes

Note 9 - Income Taxes	9 Months Ended
	Sep. 30, 2018
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes For additional information on our income taxes, including our accounting policies and the TCJA, see Notes 1 and 10 of Notes to Consolidated Financial Statements in our 2017 Form 10-K. Because the TCJA was passed late in the fourth quarter of 2017 and ongoing guidance and accounting interpretation is expected throughout 2018, as of December 31, 2017, we made provisional estimates for the effects of the TCJA in accordance with Staff Accounting Bulletin No. 118, “Income Tax Accounting Implications of the Tax Cuts and Jobs Act” (“SAB 118,” issued by the SEC staff in December 2017). These provisional estimates primarily related to NOLs, loss reserves, share-based compensation and state taxes. We expect to complete our analysis of all deferred tax balances by December 2018. As of September 30, 2018 , we have not recorded any measurement period adjustments in accordance with SAB 118 to change our provisional amounts that were recorded as of December 31, 2017. As of September 30, 2018 , we have utilized substantially all of our federal NOL carryforwards. We have approximately $7.0 million of AMT credit carryforwards, which are expected to be fully utilized or refunded in the near term. If our AMT credits are not fully utilized during the 2018 tax year, then some portion of the refundable credit may be subject to sequestration under the provisions of the Balanced Budget and Emergency Deficit Reduction Act of 1985. However, we do not expect the amount potentially subject to sequestration to be material. We are required to establish a valuation allowance against our deferred tax assets when it is more likely than not that all or some portion of our deferred tax assets will not be realized. At each balance sheet date, we assess our need for a valuation allowance and our assessment is based on all available evidence, both positive and negative. This requires management to exercise judgment and make assumptions regarding whether our deferred tax assets will be realized in future periods. In making this assessment as of September 30, 2018 , we determined that certain of our subsidiaries within Radian may continue to generate taxable losses on a separate company basis in the near term and may not be able to fully utilize certain of their state and local NOLs on their state and local tax returns. As of September 30, 2018 , our valuation allowance is $53.1 million , which relates primarily to these separate company state and local NOLs and other state tax timing adjustments. In July 2018, we finalized a settlement with the IRS related to adjustments we had been contesting that resulted from the examination by the IRS of our 2000 through 2007 consolidated federal income tax returns. The IRS was opposing the recognition of certain tax losses and deductions that were generated through our investment in a portfolio of non-economic REMIC residual interests and proposed denying the associated tax benefits of these items. This settlement with the IRS resolved the issues and concluded all disputes related to the IRS Matter. In the three-month period ended June 30, 2018, we recorded tax benefits of $73.6 million , which includes both the impact of the settlement with the IRS as well as the reversal of certain previously accrued state and local tax liabilities. Under the terms of the settlement, we will submit to the IRS approximately $31 million of our $89 million “qualified deposits” with the U.S. Treasury and the remaining balance will be returned to us. Due to the resolution of our long-standing IRS Matter, in the second quarter of 2018 we recognized a reduction in our gross unrecognized tax benefits. This reduction, which excludes deferred uncertain tax positions as well as interest and penalties, was approximately $88.6 million

Note 10 - Losses and Loss Adjus

Note 10 - Losses and Loss Adjustment Expense	9 Months Ended
	Sep. 30, 2018
Insurance Loss Reserves [Abstract]
Losses and Loss Adjustment Expense	Losses and Loss Adjustment Expense Our reserve for losses and LAE, at the end of each period indicated, consisted of: (In thousands) September 30, December 31, Mortgage insurance loss reserves $ 408,980 $ 507,588 Services loss reserves (1) 3,480 — Total reserve for losses and LAE $ 412,460 $ 507,588 ______________________ (1) A majority of this amount is included in the reinsurance recoverables reported in other assets in our condensed consolidated balance sheet, and relates to the acquisition of EnTitle Direct, completed on March 27, 2018. The following table shows our mortgage insurance reserve for losses and LAE by category at the end of each period indicated: (In thousands) September 30, December 31, Reserves for losses by category: Prime $ 231,916 $ 285,022 Alt-A and A minus and below 129,262 170,873 IBNR and other 14,505 16,021 LAE 11,203 13,349 Reinsurance recoverable (1) 9,977 8,315 Total primary reserves 396,863 493,580 Total pool reserves (2) 11,705 13,463 Total First-lien reserves 408,568 507,043 Other (3) 412 545 Total reserve for losses $ 408,980 $ 507,588 ______________________ (1) Represents ceded losses on captive reinsurance transactions, the QSR Program and the Single Premium QSR Program. These amounts are included in the reinsurance recoverables reported in other assets in our condensed consolidated balance sheets. (2) Includes reinsurance recoverable of $20 thousand and $35 thousand as of September 30, 2018 and December 31, 2017 , respectively. (3) Does not include our Second-lien premium deficiency reserve that is included in other liabilities. The following table presents information relating to our mortgage insurance reserve for losses, including our IBNR reserve and LAE but excluding our Second-lien premium deficiency reserve, for the periods indicated: Nine Months Ended (In thousands) 2018 2017 Balance at beginning of period $ 507,588 $ 760,269 Less: Reinsurance recoverables (1) 8,350 6,851 Balance at beginning of period, net of reinsurance recoverables 499,238 753,418 Add: Losses and LAE incurred in respect of default notices reported and unreported in: Current year (2) 100,047 145,798 Prior years (24,075 ) (45,331 ) Total incurred 75,972 100,467 Deduct: Paid claims and LAE related to: Current year (2) 2,316 3,639 Prior years 173,911 301,228 Total paid 176,227 304,867 (3) Balance at end of period, net of reinsurance recoverables 398,983 549,018 Add: Reinsurance recoverables (1) 9,997 7,470 Balance at end of period $ 408,980 $ 556,488 ______________________ (1) Related to ceded losses recoverable, if any, on captive reinsurance transactions, the QSR Program and the Single Premium QSR Program. See Note 7 for additional information. (2) Related to underlying defaulted loans with a most recent default notice dated in the year indicated. For example, if a loan had defaulted in a prior year, but then subsequently cured and later re-defaulted in the current year, that default would be considered a current year default. (3) Includes the payment of $54.8 million made in connection with the scheduled final settlement of the Freddie Mac Agreement in the third quarter of 2017. Reserve Activity 2018 Activity Our mortgage insurance loss reserves at September 30, 2018 declined as compared to December 31, 2017 , primarily as a result of the amount of paid claims continuing to outpace losses incurred related to new default notices reported in the current year. Reserves established for new default notices were the primary driver of our incurred losses for the nine months ended September 30, 2018 , and they were primarily impacted by the number of new primary default notices received in the period and our related gross Default to Claim Rate assumption applied to those new defaults, which was 8.5% as of September 30, 2018 . The provision for losses during the first nine months of 2018 was positively impacted by favorable reserve development on prior year defaults, which was primarily driven by a reduction during the period in certain Default to Claim Rate assumptions for these prior year defaults compared to the assumptions used at December 31, 2017. The reductions in Default to Claim Rate assumptions resulted from observed trends, primarily higher Cures than were previously estimated. Following Hurricanes Harvey and Irma, which occurred in the third quarter of 2017, we observed an increase in new primary defaults from FEMA Designated Areas associated with these hurricanes. We expect most of these hurricane-related defaults to cure by the end of 2018, and at higher cure rates than the rates for our general population of defaults. We therefore assigned a 3% Default to Claim Rate assumption to the new primary defaults from FEMA Designated Areas associated with Hurricanes Harvey and Irma that were reported subsequent to those two natural disasters and through February 2018. These incremental defaults did not have a material impact on our provision for losses in 2017 or 2018. Total claims paid decreased for the nine months ended September 30, 2018 , compared to the same period in 2017 . The decrease in claims paid is consistent with the ongoing decline in the outstanding default inventory. In addition, claims paid for the nine months ended September 30, 2017 were higher because they included payments that were made in connection with the scheduled final settlement of the Freddie Mac Agreement in the third quarter of 2017. 2017 Activity Our loss reserves at September 30, 2017 declined as compared to December 31, 2016, primarily as a result of the amount of paid claims and Cures continuing to outpace losses incurred related to new default notices reported in the current year. Reserves established for new default notices were the primary driver of our total incurred loss for the nine months ended September 30, 2017, and they were primarily impacted by the number of new primary default notices received in the period and our related gross Default to Claim Rate assumption applied to those new defaults, which was 10.5% as of September 30, 2017 . The provision for losses during the first nine months of 2017 was positively impacted by favorable reserve development on prior year defaults, which was primarily driven by a reduction during the period in certain Default to Claim Rate assumptions for these prior year defaults compared to those used at December 31, 2016. The reductions in Default to Claim Rate assumptions resulted from observed trends, primarily higher Cures than were previously estimated. The positive development in prior year defaults was partially offset by incremental IBNR reserves of $14.2 million to reflect the estimated payment for future losses, primarily on certain performing loans in our portfolio with insurance written in years prior to and including 2008 that were expected to be affected by an upcoming pool commutation. Reserve Assumptions Default to Claim Rate Our aggregate weighted-average net Default to Claim Rate assumption (net of Claim Denials and Rescissions) used in estimating our primary reserve for losses was 34% at September 30, 2018 , compared to 31% at December 31, 2017 . This increase in the Default to Claim Rate was primarily driven by a reduction in the number of defaults in FEMA Designated Areas associated with Hurricanes Harvey and Irma (which had a lower Default to Claim Rate of 3% ). Excluding the impact of defaults associated with these FEMA Designated Areas, our aggregate weighted-average net Default to Claim Rate (net of Claim Denials and Rescissions) was 35% at September 30, 2018 , as compared to 38% at December 31, 2017 . As of September 30, 2018 our gross Default to Claim Rate assumptions on our primary portfolio ranged from 8.5% for new defaults, up to 68% for defaults not in foreclosure stage, and 75% for Foreclosure Stage Defaults. Our Default to Claim Rate estimates on defaulted loans are mainly developed based on the Stage of Default and Time in Default of the underlying defaulted loans grouped according to the period in which the default occurred, as measured by the progress toward foreclosure sale and the number of months in default. Our estimate of expected Rescissions and Claim Denials (net of expected Reinstatements) embedded in our estimated Default to Claim Rate is generally based on our recent experience. Consideration is also given to any differences in characteristics between those rescinded policies and denied claims and the loans remaining in our defaulted inventory. Loss Mitigation As our insurance written in years prior to and including 2008 has become a smaller percentage of our overall insured portfolio, a reduced amount of Loss Mitigation Activity has occurred with respect to the claims we receive, and we expect this general trend to continue. As a result, our future Loss Mitigation Activity is not expected to mitigate our paid losses significantly. The amount of estimated Loss Mitigation Activities incorporated into our reserve analysis at any point in time is affected by a number of factors, including not only our estimated rate of Rescissions, Claim Denials and Claim Curtailments on future claims, but also the volume and attributes of our defaulted insured loans, our estimated Default to Claim Rate and our estimated Claim Severity, among other assumptions. Our estimate of net future Loss Mitigation Activities has not materially impacted our loss reserves at September 30, 2018 or December 31, 2017 . Our reported Rescission, Claim Denial and Claim Curtailment activity in any given period is subject to challenge by our lender and servicer customers. We expect that a portion of previous Rescissions will be reinstated and previous Claim Denials will be resubmitted with the required documentation and ultimately paid; therefore, we have incorporated this expectation into our IBNR reserve estimate. Our IBNR reserve estimate of $5.9 million and $10.4 million at September 30, 2018 and December 31, 2017 , respectively, includes reserves for this activity.

Note 11 - Senior Notes

Note 11 - Senior Notes	9 Months Ended
	Sep. 30, 2018
Senior Notes [Abstract]
Senior Notes	Senior Notes The carrying value of our senior notes at September 30, 2018 and December 31, 2017 was as follows: (In thousands) September 30, December 31, 5.500% Senior Notes due 2019 $ 158,148 $ 157,636 5.250% Senior Notes due 2020 232,500 231,834 7.000% Senior Notes due 2021 195,682 195,146 4.500% Senior Notes due 2024 443,181 442,458 Total Senior Notes $ 1,029,511 $ 1,027,074

Note 12 - Other Liabilities (No

Note 12 - Other Liabilities (Notes)	9 Months Ended
	Sep. 30, 2018
Other Liabilities [Abstract]
Other Liabilities Disclosure [Text Block]	Other Liabilities The following table shows the components of other liabilities as of the dates indicated: (In thousands) September 30, December 31, Deferred ceding commission $ 92,987 $ 89,907 FHLB advances 71,430 — Accrued compensation 48,712 67,687 Payable for securities (1) 43,076 1,000 Amount payable on the return of cash collateral under securities lending agreements 31,799 19,357 Current federal income taxes 11,278 96,740 Other 80,080 79,154 Total other liabilities $ 379,362 $ 353,845 ______________________ (1) Represents the payable for purchases of securities that have not yet settled as of the balance sheet date. FHLB Advances In August 2016, Radian Guaranty and Radian Reinsurance became members of the FHLB. As members, they may borrow from the FHLB, subject to certain conditions, which include the need to post collateral and the requirement to maintain a minimum investment in FHLB stock, in part depending on the level of their outstanding FHLB advances. As of September 30, 2018 , we had $71.4 million of fixed-rate advances outstanding with a weighted average interest rate of 2.49% . Interest on the FHLB advances is payable quarterly, or at maturity if the term of the advance is less than 90 days. As of September 30, 2018 , $46.9 million of the FHLB advances mature in 2018, $11.5 million mature in 2019, $5.0 million mature in 2021 and $8.0 million mature in 2023 and thereafter. Principal is due at maturity. For obligations with maturities greater than or equal to 90 days, we may prepay the debt at any time, subject to a prepayment fee calculation. The FHLB advances are required to be collateralized by eligible assets with a market value that must be maintained at a minimum of approximately 103% to 105% of the principal balance of the FHLB advances (based on the eligible collateral we have provided at September 30, 2018 , which consisted of an aggregate amount of $76.6 million in U.S. government and agency securities and RMBS from fixed-maturities available for sale within our investment securities portfolio). Amount Payable on the Return of Cash Collateral under Securities Lending Agreements We participate in a securities lending program through which we loan certain securities in our investment portfolio to Borrowers for short periods of time. These securities lending agreements, whereby we transfer securities to third parties through an intermediary in exchange for cash or other securities, are considered collateralized financing arrangements. Amounts payable on the return of cash collateral under securities lending agreements are classified as other liabilities in our condensed consolidated balance sheets. See Note 5 for additional information. Revolving Credit Facility On October 16, 2017, Radian Group entered into a three-year, $225 million unsecured revolving credit facility with a syndicate of bank lenders. Terms of the credit facility include an accordion feature that allows Radian Group, at its option, to increase the total borrowing capacity during the term of the agreement, subject to our obtaining the necessary increased commitments from lenders (which may include then existing or other lenders), up to a total of $300 million . Effective October 26, 2018, Radian Group exercised its rights under the accordion feature to add another global bank to the existing syndicate of bank lenders and to increase the amount of total commitments under the credit facility by $42.5 million , bringing the aggregate unsecured revolving credit facility to $267.5 million . Subject to certain limitations, borrowings under the credit facility may be used for working capital and general corporate purposes, including capital contributions to Radian Group’s insurance and reinsurance subsidiaries as well as growth initiatives. The credit facility contains customary representations, warranties, covenants, terms and conditions. Our ability to borrow under the credit facility is conditioned on the satisfaction of certain financial and other covenants, including covenants related to minimum net worth and statutory surplus, a maximum debt-to-capitalization level, limits on certain types of indebtedness and liens, minimum liquidity levels and Radian Guaranty’s eligibility as a private mortgage insurer with the GSEs. See Note 12 of Notes to Consolidated Financial Statements in our 2017 Form 10-K. At September 30, 2018 , Radian Group was in compliance with all the covenants and there were no

Note 13 - Commitments and Conti

Note 13 - Commitments and Contingencies	9 Months Ended
	Sep. 30, 2018
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies Legal Proceedings See Note 13 of Notes to Consolidated Financial Statements in our 2017 Form 10-K for information regarding our accounting policies for contingencies. We are routinely involved in a number of legal actions and proceedings, including litigation and other disputes arising in the ordinary course of our business. The legal and regulatory matters discussed below and in our 2017 Form 10-K could result in adverse judgments, settlements, fines, injunctions, restitutions or other relief that could require significant expenditures or have other effects on our business. Management believes, based on current knowledge and after consultation with counsel, that the outcome of such actions will not have a material adverse effect on our consolidated financial condition. However, the outcome of litigation and other legal and regulatory matters and proceedings is inherently uncertain, and it is possible that one or more of the matters currently pending or threatened could have an unanticipated adverse effect on our liquidity, financial condition or results of operations for any particular period. On December 22, 2016, Ocwen Loan Servicing, LLC and Homeward Residential, Inc. (collectively, “Ocwen”) filed a complaint in the U.S. District Court for the Eastern District of Pennsylvania against Radian Guaranty (the “Complaint”) alleging breach of contract and bad faith claims and seeking monetary damages and declaratory relief. Ocwen has also initiated similar legal proceedings against several other mortgage insurers. On December 17, 2016, Ocwen separately filed a parallel arbitration petition against Radian Guaranty before the American Arbitration Association (“AAA”) asserting substantially the same allegations (the “Arbitration”). Ocwen’s filings together listed 9,420 mortgage insurance certificates issued under multiple insurance policies, including Pool Insurance policies, as subject to the dispute. On June 5, 2017, Ocwen filed an amended complaint and an amended petition (collectively, the “Amended Filings”) with both the court and the AAA, respectively, together listing 8,870 certificates as subject to the dispute. On April 11, 2018, the parties entered into a confidential agreement with respect to all certificates subject to the dispute. The confidential agreement resolved certain categories of claims involved in the dispute and, on April 12, 2018, the parties filed a stipulation of voluntary dismissal of the federal court proceeding and the trial judge issued an Order dismissing all claims and counterclaims subject to the parties’ agreement. Radian Guaranty was not required to make any payment in connection with this confidential agreement. Pursuant to the confidential agreement, the parties: (1) dismissed the federal court proceeding; (2) narrowed the scope of the dispute to Ocwen’s breach of contract claims seeking payment of insurance benefits on approximately 2,500 certificates that Ocwen was previously pursuing through the Amended Filings; and (3) agreed to resolve the remaining dispute through the Arbitration. Radian Guaranty believes that Ocwen’s allegations and claims in the legal proceedings described above are without merit and legally deficient, and plans to defend these claims vigorously. We are not able to estimate a reasonably possible loss, if any, or range of loss in this matter because of the preliminary stage of the Arbitration. On August 31, 2018, Nationstar Mortgage LLC d/b/a Mr. Cooper (“Nationstar”) filed a complaint in the U.S. District Court for the Eastern District of Pennsylvania against Radian Guaranty (the “Complaint”) alleging breach of contract, bad faith, and unjust enrichment claims and seeking monetary damages and declaratory relief. The Complaint lists 3,014 mortgage insurance certificates issued under multiple insurance policies as subject to disputes involving insurance coverage decisions. The Complaint further lists 2,231 mortgage insurance certificates issued under multiple insurance policies as subject to disputes involving premium refund requests. Radian Guaranty believes that Nationstar’s allegations and claims in the legal proceedings described above are without merit and legally deficient, and plans to defend these claims vigorously. We are not able to estimate a reasonably possible loss, if any, or range of loss in this matter because of the preliminary stage of the litigation. We also are periodically subject to reviews and audits, as well as inquiries, information-gathering requests and investigations. In connection with these matters, from time to time we receive requests and subpoenas seeking information and documents related to aspects of our business. In March 2017, Green River Capital, a subsidiary of Clayton, received a letter from the staff of the SEC stating that it is conducting an investigation captioned, “In the Matter of Certain Single Family Rental Securitizations,” and that it is requesting information from market participants. The letter requested that Green River Capital provide information regarding broker price opinions that Green River Capital provided on properties included in SFR securitization transactions. Green River Capital has been cooperating with the SEC in this matter. Our Master Policies establish the timeline within which any suit or action arising from any right of an insured under the policy generally must be commenced. In general, any suit or action arising from any right of an insured under the policy must be commenced within two years after such right first arose for primary insurance and within three years for certain other policies, including certain Pool Insurance policies. Although we believe that our Loss Mitigation Activities are justified under our policies, from time to time we face challenges from certain lender and servicer customers regarding our Loss Mitigation Activities, which have resulted in some reversals of our decisions regarding Rescissions, Claim Denials or Claim Curtailments. We are currently in discussions with these customers regarding our Loss Mitigation Activities and claim payment practices, which if not resolved, could result in arbitration or judicial proceedings and we may need to reassume the risk on, and increase loss reserves for, the associated policies or pay additional claims. See Note 10 for additional information. Other Securities regulations became effective in 2005 that impose enhanced disclosure requirements on issuers of ABS (including mortgage-backed securities). To allow our customers to comply with these regulations at that time, we typically were required, depending on the amount of credit enhancement we were providing, to provide: (i) audited financial statements for the insurance subsidiary participating in the transaction or (ii) a full and unconditional holding company-level guarantee for our insurance subsidiaries’ obligations in such transactions. Radian Group has guaranteed two structured transactions for Radian Guaranty involving $90.3 million of remaining credit exposure as of September 30, 2018

Note 14 - Capital Stock (Notes)

Note 14 - Capital Stock (Notes)	9 Months Ended
	Sep. 30, 2018
Equity [Abstract]
Stockholders' Equity Note Disclosure [Text Block]	Capital Stock Share Repurchase Program On August 9, 2017, Radian Group’s board of directors authorized the Company to repurchase up to $50 million of its common stock in the open market or in privately negotiated transactions, based on market and business conditions, stock price and other factors. Pursuant to a trading plan under Rule 10b5-1 of the Exchange Act, the Company purchased 3,022,856 shares in the first half of 2018 at an average price of $16.56 per share, including commissions. This share repurchase program was fully utilized and expired on July 31, 2018. On August 16, 2018, Radian Group’s board of directors approved a new share repurchase program that authorizes the Company to repurchase up to $100 million of its common stock in the open market or in privately negotiated transactions, based on market and business conditions, stock price and other factors. As of September 30, 2018, the full purchase authority of up to $100 million remained available under this program, which expires on July 31, 2019. Other Purchases We may purchase shares on the open market to settle stock options exercised by employees and purchases under our Employee Stock Purchase Plan. In addition, upon the vesting of certain restricted stock awards or the auto-exercise of certain expiring stock options under our equity compensation plans, we may withhold from such vested or auto-exercised awards shares of our common stock to satisfy the tax liability and the stock option cost of the award recipients, as applicable. Dividends Paid In each of the quarters during 2018 and 2017

Note 15 - Accumulated Other Com

Note 15 - Accumulated Other Comprehensive Income (Loss)	9 Months Ended
	Sep. 30, 2018
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Accumulated Other Comprehensive Income	Accumulated Other Comprehensive Income (Loss) The following table shows the rollforward of accumulated other comprehensive income (loss) as of the periods indicated: Three Months Ended September 30, 2018 Nine Months Ended September 30, 2018 (In thousands) Before Tax Tax Effect Net of Tax Before Tax Tax Effect Net of Tax Balance at beginning of period $ (73,345 ) $ (15,402 ) $ (57,943 ) $ 32,669 $ 9,584 $ 23,085 Cumulative effect of adopting the accounting standard update for financial instruments — — — 284 60 224 Cumulative effect of adopting the accounting standard update for the reclassification of certain tax effects — — — — (2,724 ) 2,724 Balance adjusted for cumulative effect of adopting accounting standard updates (73,345 ) (15,402 ) (57,943 ) 32,953 6,920 26,033 OCI: Unrealized gains (losses) on investments: Unrealized holding gains (losses) arising during the period (6,762 ) (1,421 ) (5,341 ) (118,719 ) (24,931 ) (93,788 ) Less: Reclassification adjustment for net gains (losses) included in net income (1) (5,120 ) (1,076 ) (4,044 ) (10,775 ) (2,263 ) (8,512 ) Net unrealized gains (losses) on investments (1,642 ) (345 ) (1,297 ) (107,944 ) (22,668 ) (85,276 ) Unrealized foreign currency translation adjustments — — — 4 1 3 OCI (1,642 ) (345 ) (1,297 ) (107,940 ) (22,667 ) (85,273 ) Balance at end of period $ (74,987 ) $ (15,747 ) $ (59,240 ) $ (74,987 ) $ (15,747 ) $ (59,240 ) Three Months Ended September 30, 2017 Nine Months Ended September 30, 2017 (In thousands) Before Tax Tax Effect Net of Tax Before Tax Tax Effect Net of Tax Balance at beginning of period $ 27,878 $ 9,761 $ 18,117 $ (19,063 ) $ (6,668 ) $ (12,395 ) OCI: Unrealized gains (losses) on investments: Unrealized holding gains (losses) arising during the period 9,598 3,359 6,239 52,069 18,224 33,845 Less: Reclassification adjustment for net gains (losses) included in net income (1) 170 59 111 (4,134 ) (1,447 ) (2,687 ) Net unrealized gains (losses) on investments 9,428 3,300 6,128 56,203 19,671 36,532 Unrealized foreign currency translation adjustments 39 11 28 205 69 136 OCI 9,467 3,311 6,156 56,408 19,740 36,668 Balance at end of period $ 37,345 $ 13,072 $ 24,273 $ 37,345 $ 13,072 $ 24,273 ______________________ (1)

Note 16 - Statutory Information

Note 16 - Statutory Information	9 Months Ended
	Sep. 30, 2018
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information [Abstract]
Statutory Information	Statutory Information We prepare our statutory financial statements in accordance with the accounting practices required or permitted, if applicable, by the insurance departments of the respective states of domicile of our insurance subsidiaries. Required SAPP are established by a variety of NAIC publications, as well as state laws, regulations and general administrative rules. In addition, insurance departments have the right to permit other specific practices that may deviate from prescribed practices. As of September 30, 2018 , we did not have any prescribed or permitted statutory accounting practices that resulted in reported statutory surplus or risk-based capital being different from what would have been reported had NAIC statutory accounting practices been followed. State insurance regulations include various capital requirements and dividend restrictions based on our insurance subsidiaries’ statutory financial position and results of operations, as described below. Failure to maintain adequate levels of capital could lead to intervention by the various insurance regulatory authorities, which could materially and adversely affect our business, business prospects and financial condition. As of September 30, 2018 , the amount of restricted net assets held by our consolidated insurance subsidiaries (which represents our equity investment in those insurance subsidiaries) totaled $3.9 billion of our consolidated net assets. Under state insurance regulations, Radian Guaranty is required to maintain minimum surplus levels and, in certain states, a minimum ratio of statutory capital relative to the level of net RIF, or Risk-to-capital. There are 16 RBC States that currently impose a Statutory RBC Requirement. The most common Statutory RBC Requirement is that a mortgage insurer’s Risk-to-capital may not exceed 25 to 1. In certain of the RBC States, a mortgage insurer must satisfy a MPP Requirement. The statutory capital requirements for the non-RBC States are de minimis (ranging from $1 million to $5 million ); however, the insurance laws of these states generally grant broad supervisory powers to state agencies or officials to enforce rules or exercise discretion affecting almost every significant aspect of the insurance business, including the power to revoke or restrict an insurance company’s ability to write new business. Unless an RBC State grants a waiver or other form of relief, if a mortgage insurer, such as Radian Guaranty, is not in compliance with the Statutory RBC Requirement of that state, the mortgage insurer may be prohibited from writing new mortgage insurance business in that state. Radian Guaranty’s domiciliary state, Pennsylvania, is not one of the RBC States. Radian Guaranty was in compliance with the Statutory RBC Requirements or MPP Requirements, as applicable, in each of the RBC States as of September 30, 2018 . The NAIC is in the process of developing a new Model Act for mortgage insurers, which is expected to include, among other items, new capital adequacy requirements for mortgage insurers. In May 2016, a working group of state regulators released an exposure draft of this Model Act. While the outcome and timing of this process are uncertain, the new Model Act, if and when finalized by the NAIC, has the potential to increase capital requirements in those states that adopt the Model Act. However, we continue to believe the changes to the Model Act will not result in financial requirements that require greater capital than the level currently required under the PMIERs financial requirements. See Note 1 herein and Note 1 of Notes to Consolidated Financial Statements in our 2017 Form 10-K for information regarding the PMIERs, which set requirements for private mortgage insurers to remain approved insurers of loans purchased by the GSEs. Radian Guaranty’s Risk-to-capital calculation appears in the table below. For purposes of the Risk-to-capital calculation, as well as the Risk-to-capital requirements imposed by certain states, statutory capital is defined as the sum of statutory policyholders’ surplus plus statutory contingency reserves. September 30, December 31, ($ in millions) RIF, net (1) $ 40,241.6 $ 36,793.5 Common stock and paid-in capital $ 1,866.0 $ 1,866.0 Surplus Note 100.0 100.0 Unassigned earnings (deficit) (708.9 ) (765.0 ) Statutory policyholders’ surplus 1,257.1 1,201.0 Contingency reserve 1,995.8 1,667.0 Statutory capital $ 3,252.9 $ 2,868.0 Risk-to-capital 12.4:1 12.8:1 ______________________ (1) Excludes risk ceded through reinsurance contracts (to third parties and affiliates) and RIF on defaulted loans. Radian Guaranty’s statutory capital increased by $384.9 million in the first nine months of 2018 , primarily due to Radian Guaranty’s statutory net income of $376.3 million during this period. The net decrease in Radian Guaranty’s Risk-to-capital in the first nine months of 2018 was primarily due to the increase in overall statutory capital, partially offset by an increase in RIF. The Risk-to-capital ratio for our combined mortgage insurance operations was 11.7 to 1 as of September 30, 2018 , compared to 12.1 to 1 as of December 31, 2017 . Segregated Funds Held for Others Through EnTitle Insurance, we maintain escrow deposits as a service to our customers. Amounts held in escrow and excluded from assets and liabilities in our consolidated balance sheets totaled $6.1 million as of September 30, 2018. These amounts were held at third-party financial institutions and not considered assets of the Company. Should one or more of the financial institutions at which escrow deposits are maintained fail, there is no guarantee that we would recover the funds deposited, whether through Federal Deposit Insurance Corporation coverage or otherwise. In the event of any such failure, we could be held liable for the disposition of these funds owned by third parties.

Note 1 - Condensed Consolidat_2

Note 1 - Condensed Consolidated Financial Statements - Business Overview, Recent Developments and Significant Accounting Policies (Policies)	9 Months Ended
	Sep. 30, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Accounting, Policy	Our condensed consolidated financial statements are prepared in accordance with GAAP and include the accounts of Radian Group Inc. and its subsidiaries. All intercompany accounts and transactions, and intercompany profits and losses, have been eliminated. We have condensed or omitted certain information and footnote disclosures normally included in consolidated financial statements prepared in accordance with GAAP pursuant to the instructions set forth in Article 10 of Regulation S-X of the SEC.
Reclassification, Policy	Certain prior period amounts have been reclassified to conform to current period presentation.
Use of Estimates, Policy	The preparation of financial statements in conformity with GAAP requires us to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of our contingent assets and liabilities at the dates of the financial statements, as well as the reported amounts of revenues and expenses during the reporting periods. While the amounts included in our condensed consolidated financial statements include our best estimates and assumptions, actual results may vary materially.
Securities Borrowed and Loaned Policy	During the third quarter of 2017, we commenced participation in a securities lending program whereby we loan certain securities in our investment portfolio to Borrowers for short periods of time. These securities lending agreements are collateralized financing arrangements whereby we transfer securities to third parties through an intermediary in exchange for cash or other securities. In all of our securities lending agreements, the securities we transfer to Borrowers (loaned securities) may be transferred or loaned by the Borrowers; however, we maintain effective control over all loaned securities, including: (i) retaining ownership of the securities; (ii) receiving the related investment or other income; and (iii) having the right to request the return of the loaned securities at any time. Although we report such securities at fair value within other assets in our condensed consolidated balance sheets, the detailed information regarding investments provided in this Note includes these securities.
New Accounting Pronouncements and Changes in Accounting Principles	Accounting Standards Adopted During 2018. In May 2014, the FASB issued an update to the accounting standard regarding revenue recognition. In July 2015, the FASB delayed the effective date for this updated standard for public companies to interim and annual periods beginning after December 15, 2017, and subsequently issued various clarifying updates. Our adoption of this standard, effective January 1, 2018, had no impact on our financial statements. The disclosures required by this update are included above in “— Revenue Recognition. ” In January 2016, the FASB issued an update that makes certain changes to the standard for the accounting of financial instruments. Among other things, the update requires: (i) equity investments to be measured at fair value with changes in fair value recognized in net income; (ii) the use of the exit price notion when measuring the fair value of financial instruments for disclosure purposes; (iii) separate presentation of financial assets and financial liabilities by measurement category and form of financial asset; and (iv) separate presentation in other comprehensive income of the portion of the total change in the fair value of a liability resulting from a change in the instrument-specific credit risk (also referred to as “own credit”) when the organization has elected to measure the liability at fair value in accordance with the fair value option for financial instruments. The update also eliminates the requirement to disclose the methods and significant assumptions used to estimate the fair value that is required to be disclosed for financial instruments measured at amortized cost on the balance sheet. This update is effective for public companies for fiscal years beginning after December 15, 2017, including interim periods within those fiscal years. In February 2018, the FASB issued technical corrections related to this update, which addresses common questions regarding the application and adoption of the new guidance and the subsequent amendments. As a result of adopting these updates, equity securities are no longer classified as available for sale securities and changes in fair value are recognized through earnings. Consequently, we recorded a cumulative effect adjustment to retained earnings from accumulated other comprehensive income representing unrealized losses related to equity securities in the amount of $0.2 million , net of tax. In addition, we elected to utilize net asset value as a practical expedient to measure certain other investments, which resulted in an increase to other invested assets with an offset to retained earnings in the amount of $2.3 million , net of tax . Our adoption of both these updates effective January 1, 2018 resulted in a net increase to retained earnings of $2.1 million . See Notes 4 and 5 for additional information. In February 2018, the FASB issued an update to the accounting standard regarding income statement reporting of comprehensive income and reclassification of certain tax effects from accumulated other comprehensive income. The amendments in this update allow a reclassification from accumulated other comprehensive income to retained earnings for stranded tax effects resulting from the TCJA. The provisions of this update are effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. Early adoption is permitted, including adoption in an interim period, for reporting periods for which financial statements have not been available for issuance. We elected to early adopt this update effective January 1, 2018. As a result we recorded a reclassification adjustment from other comprehensive income to retained earnings in the amount of $2.7 million . See Note 9
New Accounting Pronouncements Not Yet Adopted, Policy	Accounting Standards Not Yet Adopted. In February 2016, the FASB issued an update that replaces the existing accounting and disclosure requirements for leases of property, plant and equipment. The update requires lessees to recognize, as of the lease commencement date, assets and liabilities for all leases with lease terms of more than 12 months, which is a change from the current GAAP requirement to recognize only capital leases on the balance sheet. Pursuant to the new standard, the liability initially recognized for the lease obligation is equal to the present value of the lease payments not yet made, discounted over the lease term at the implicit interest rate of the lease, if available, or otherwise at the lessee’s incremental borrowing rate. The lessee is also required to recognize an asset for its right to use the underlying asset for the lease term, based on the liability subject to certain adjustments, such as for initial direct costs. Leases are required to be classified as either operating or finance, with expense on operating leases recorded as a single lease cost on a straight-line basis. For finance leases, interest expense on the lease liability is required to be recognized separately from the straight-line amortization of the right-of-use asset. Quantitative disclosures are required for certain items, including the cost of leases, the weighted-average remaining lease term, the weighted-average discount rate and a maturity analysis of lease liabilities. Additional qualitative disclosures are also required regarding the nature of the leases, such as basis, terms and conditions of: (i) variable interest payments; (ii) extension and termination options; and (iii) residual value guarantees. This update, and the clarifying update issued in July 2018, is effective for public companies for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. Early adoption is permitted. The new standard must be adopted by applying the new guidance as of the beginning of the earliest comparative period presented, using a modified retrospective transition approach with certain optional practical expedients. We are currently in the process of identifying our current leases that are subject to the scope of this standard and evaluating the impact on our financial statements and future disclosures as a result of this update. We expect to recognize right-of-use assets and related obligations upon adoption of this update. In July 2018 the FASB issued a further update containing certain targeted improvements to the accounting and disclosure requirements for leases, including an additional (and optional) transition method to recognize the cumulative-effect adjustment as of the beginning of the period of adoption, rather than recognizing the cumulative-effect adjustment as of the beginning of the earliest comparative period presented. We expect to elect the optional transition method to recognize the cumulative-effect adjustment as of the beginning of the period of adoption. In addition, we expect to elect the practical expedients for transitioning existing leases to the new standard as of the effective date. As a result of applying the practical expedients: (i) we are not required to reassess expired or existing contracts to determine if they contain additional leases; (ii) we are not required to reassess the lease classification for expired and existing leases; and (iii) we are not required to reassess initial direct costs for existing leases. We are currently evaluating the impact of adoption of these updates on our financial statements and future disclosures. See Note 13 of Notes to Consolidated Financial Statements in our 2017 Form 10-K for additional information about our leases. In June 2016, the FASB issued an update to the accounting standard regarding the measurement of credit losses on financial instruments. This update requires that financial assets measured at their amortized cost basis be presented at the net amount expected to be collected. Credit losses relating to available-for-sale debt securities are to be recorded through an allowance for credit losses, rather than a write-down of the asset, with the amount of the allowance limited to the amount by which fair value is less than amortized cost. This update is effective for public companies for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. Early adoption is permitted for the fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. This update is not applicable to credit losses associated with our mortgage insurance policies. We are currently evaluating the impact on our financial statements and future disclosures as a result of this update. In March 2017, the FASB issued an update to the accounting standard regarding receivables. The new standard requires certain premiums on purchased callable debt securities to be amortized to the earliest call date. The amortization period for callable debt securities purchased at a discount will not be impacted. The provisions of this update are effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. Early adoption is permitted, including adoption in an interim period. We do not expect the adoption of this update to have a material effect on our financial statements and disclosures. In August 2018, the FASB issued an update to the accounting standard regarding the accounting for long-duration insurance contracts. The new standard: (i) requires that assumptions used to measure the liability for future policy benefits be reviewed at least annually; (ii) defines and simplifies the measurement of market risk benefits; (iii) simplifies the amortization of deferred acquisition costs; and (iv) enhances the required disclosures about long-duration contracts. This update is effective for fiscal years beginning after December 15, 2020, including interim periods within those fiscal years. Early adoption is permitted. We are currently evaluating the potential impact of the adoption of this update. In August 2018, the FASB issued an update to the accounting standard regarding the disclosure requirements for fair value measurement. The amendments in this update remove certain disclosure requirements regarding transfers between assets as well as the valuation process for Level III assets. This update is effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. Early adoption is permitted, including adoption in an interim period. An entity is permitted to early adopt any removed or modified disclosures and delay adoption of the additional disclosures until their required effective date. We are currently evaluating the impact on our financial statements and future disclosures as a result of this update.
Segment Reporting, Policy	We have two strategic business units that we manage separately—Mortgage Insurance and Services. Adjusted pretax operating income (loss) for each segment represents segment results on a standalone basis; therefore, inter-segment eliminations and reclassifications required for consolidated GAAP presentation have not been reflected. We allocate to our Mortgage Insurance segment: (i) corporate expenses based on its forecasted annual percentage of total revenue, which approximates the estimated percentage of time spent on the Mortgage Insurance segment; (ii) all interest expense (except for interest expense related to an intercompany note with terms consistent with the original issued amount of $300 million from the Senior Notes due 2019 that were used to fund our purchase of Clayton, all of which is allocated to our Services segment); and (iii) all corporate cash and investments. We allocate to our Services segment: (i) corporate expenses based on its forecasted annual percentage of total revenue, which approximates the estimated percentage of time spent on the Services segment and (ii) the allocated interest expense related to the intercompany note as described above. No material corporate cash or investments are allocated to the Services segment. Inter-segment activities are recorded at market rates for segment reporting and eliminated in consolidation.
Fair Value of Financial Instruments, Policy	In accordance with GAAP, we established a three-level valuation hierarchy for disclosure of fair value measurements based on the transparency of inputs to the valuation of an asset or liability as of the measurement date. The hierarchy gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (Level I measurements) and the lowest priority to unobservable inputs (Level III measurements). The level in the fair value hierarchy within which the fair value measurement falls is determined based on the lowest level input that is significant to the measurement in its entirety. The three levels of the fair value hierarchy are defined below: Level I — Unadjusted quoted prices for identical assets or liabilities in active markets that are accessible at the measurement date for identical, unrestricted assets or liabilities; Level II — Prices or valuations based on observable inputs other than quoted prices in active markets for identical assets and liabilities; and Level III — Prices or valuations that require inputs that are both significant to the fair value measurement and unobservable. Level III inputs are used to measure fair value only to the extent that observable inputs are not available.
Income Tax, Policy	We are required to establish a valuation allowance against our deferred tax assets when it is more likely than not that all or some portion of our deferred tax assets will not be realized. At each balance sheet date, we assess our need for a valuation allowance and our assessment is based on all available evidence, both positive and negative. This requires management to exercise judgment and make assumptions regarding whether our deferred tax assets will be realized in future periods.
Revenue Recognition, Deferred Revenue, Policy	Our Services segment revenues are recognized over time and measured each period based on the progress to date as services are performed and made available to customers. Our contracts with customers, including payment terms, are generally short-term in nature; therefore, any impact related to timing is immaterial. Revenue recognized related to services made available to customers and billed is reflected in accounts receivables. Revenue recognized related to services performed and not yet billed is recorded in unbilled receivables and reflected in other assets. We have no material bad-debt expense. The following represents balances related to Services contracts as of the dates indicated: (In thousands) September 30, 2018 December 31, 2017 Accounts Receivable - Services Contracts $ 12,544 $ 17,391 Unbilled Receivables - Services Contracts 19,580 22,257 Deferred Revenues - Services Contracts 4,131 3,235 Revenue expected to be recognized in any future period related to remaining performance obligations, such as contracts where revenue is recognized as invoiced and contracts with variable consideration related to undelivered performance obligations, is not material. Fee-for-Service Contracts Generally, our contracts with our clients do not include minimum volume commitments and can be terminated at any time by our clients. Although some of our contracts and assignments are recurring in nature, and include repetitive monthly assignments, a significant portion of our engagements are transactional in nature and may be performed in connection with securitizations, loan sales, loan purchases or other transactions. Due to the transactional nature of our business, our Services segment revenues may fluctuate from period to period as transactions are commenced or completed. We do not recognize revenue or expense related to amounts advanced by us and subsequently reimbursed by clients for maintenance or repairs because we do not take control of the service prior to the client taking control. We record an expense if an advance is made that is not in accordance with a client contract and the client is not obligated to reimburse us. Due to the nature of the services provided, our Services arrangements with customers may include any of the following three basic types of contracts: Fixed-Price Contracts. We use fixed-price contracts in our real estate valuation and component services, our loan review, underwriting and due diligence services as well as our title and closing services. We also use fixed-price contracts in our surveillance business for our servicer oversight services and RMBS surveillance services, and in our asset management business activities. Under fixed-price contracts we agree to perform the specified services and deliverables for a pre-determined per-unit or per-file price or day rate. Each service qualifies as a separate performance obligation and revenue is recognized as the service performed is made available to the client. Time-and-Expense Contracts. The Services segment also derives a portion of its revenue from professional service activities under time-and-expense contracts. In these types of contracts, we are paid a fixed hourly rate, and we are reimbursed for billable out-of-pocket expenses as work is performed. These contracts are used in our loan review, underwriting and due diligence services. Services revenue consisting of billed time fees and pass-through expenses is recorded over time and based on the progress to date as services are performed and made available to customers. Services revenue may also include expenses billed to clients, which includes travel and other out-of-pocket expenses, and other reimbursable expenses. Percentage-of-Sale Contracts. Under percentage-of-sale contracts, we are paid a contractual percentage of the sale proceeds upon the sale of each property. These contracts are only used for a portion of our REO management services and our real estate brokerage services. In addition, through the use of our proprietary technology, property leads are sent to select clients. Revenue attributable to services provided under a percentage-of-sale contract is recognized over time and measured based on the progress to date and typically coincides with the client’s successful closing on the property. The revenue recognized for these transactions is based on a percentage of the sale.

Note 3 - Segment Reporting (Pol

Note 3 - Segment Reporting (Policies)	9 Months Ended
	Sep. 30, 2018
Segment Reporting [Abstract]
Segment Reporting, Policy	We have two strategic business units that we manage separately—Mortgage Insurance and Services. Adjusted pretax operating income (loss) for each segment represents segment results on a standalone basis; therefore, inter-segment eliminations and reclassifications required for consolidated GAAP presentation have not been reflected. We allocate to our Mortgage Insurance segment: (i) corporate expenses based on its forecasted annual percentage of total revenue, which approximates the estimated percentage of time spent on the Mortgage Insurance segment; (ii) all interest expense (except for interest expense related to an intercompany note with terms consistent with the original issued amount of $300 million from the Senior Notes due 2019 that were used to fund our purchase of Clayton, all of which is allocated to our Services segment); and (iii) all corporate cash and investments. We allocate to our Services segment: (i) corporate expenses based on its forecasted annual percentage of total revenue, which approximates the estimated percentage of time spent on the Services segment and (ii) the allocated interest expense related to the intercompany note as described above. No material corporate cash or investments are allocated to the Services segment. Inter-segment activities are recorded at market rates for segment reporting and eliminated in consolidation.

Note 4 - Fair Value of Financ_2

Note 4 - Fair Value of Financial Instruments (Policies)	9 Months Ended
	Sep. 30, 2018
Fair Value Disclosures [Abstract]
Fair Value of Financial Instruments, Policy	In accordance with GAAP, we established a three-level valuation hierarchy for disclosure of fair value measurements based on the transparency of inputs to the valuation of an asset or liability as of the measurement date. The hierarchy gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (Level I measurements) and the lowest priority to unobservable inputs (Level III measurements). The level in the fair value hierarchy within which the fair value measurement falls is determined based on the lowest level input that is significant to the measurement in its entirety. The three levels of the fair value hierarchy are defined below: Level I — Unadjusted quoted prices for identical assets or liabilities in active markets that are accessible at the measurement date for identical, unrestricted assets or liabilities; Level II — Prices or valuations based on observable inputs other than quoted prices in active markets for identical assets and liabilities; and Level III — Prices or valuations that require inputs that are both significant to the fair value measurement and unobservable. Level III inputs are used to measure fair value only to the extent that observable inputs are not available.

Note 5 - Investments (Policies)

Note 5 - Investments (Policies)	9 Months Ended
	Sep. 30, 2018
Investments [Abstract]
Securities Borrowed and Loaned Policy	During the third quarter of 2017, we commenced participation in a securities lending program whereby we loan certain securities in our investment portfolio to Borrowers for short periods of time. These securities lending agreements are collateralized financing arrangements whereby we transfer securities to third parties through an intermediary in exchange for cash or other securities. In all of our securities lending agreements, the securities we transfer to Borrowers (loaned securities) may be transferred or loaned by the Borrowers; however, we maintain effective control over all loaned securities, including: (i) retaining ownership of the securities; (ii) receiving the related investment or other income; and (iii) having the right to request the return of the loaned securities at any time. Although we report such securities at fair value within other assets in our condensed consolidated balance sheets, the detailed information regarding investments provided in this Note includes these securities.

Note 9 - Income Taxes (Policies

Note 9 - Income Taxes (Policies)	9 Months Ended
	Sep. 30, 2018
Income Tax Disclosure [Abstract]
Income Tax, Policy	We are required to establish a valuation allowance against our deferred tax assets when it is more likely than not that all or some portion of our deferred tax assets will not be realized. At each balance sheet date, we assess our need for a valuation allowance and our assessment is based on all available evidence, both positive and negative. This requires management to exercise judgment and make assumptions regarding whether our deferred tax assets will be realized in future periods.

Note 1 - Condensed Consolidat_3

Note 1 - Condensed Consolidated Financial Statements - Business Overview, Recent Developments and Significant Accounting Policies (Tables)	9 Months Ended
	Sep. 30, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Services Revenue by Revenue Type [Table Text Block]	The table below represents the disaggregation of Services revenues by revenue type: Three Months Ended Nine Months Ended (In thousands) 2018 2017 2018 2017 Services segment revenue Mortgage Services $ 14,663 $ 17,005 $ 44,998 $ 53,158 Real Estate Services 20,920 17,386 58,124 49,863 Title Services 2,198 6,671 6,933 18,105 Total (1) $ 37,781 $ 41,062 $ 110,055 $ 121,126 ______________________ (1) Includes inter-segment revenues of $0.8 million and $2.7 million for the three and nine months ended September 30, 2018 and $1.5 million and $5.7 million for the three and nine months ended September 30, 2017 , respectively. For the three and nine months ended September 30, 2018 , amounts exclude $3.1 million and $5.5 million , respectively, of Services segment net premiums earned—insurance and net investment income, as both are excluded from the scope of the revenue recognition standard. See Note 3
Services Contract Assets & Liabilities [Table Text Block]	The following represents balances related to Services contracts as of the dates indicated: (In thousands) September 30, 2018 December 31, 2017 Accounts Receivable - Services Contracts $ 12,544 $ 17,391 Unbilled Receivables - Services Contracts 19,580 22,257 Deferred Revenues - Services Contracts 4,131 3,235

Note 2 - Net Income Per Share (

Note 2 - Net Income Per Share (Tables)	9 Months Ended
	Sep. 30, 2018
Earnings Per Share [Abstract]
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]	The calculation of basic and diluted net income per share was as follows: Three Months Ended Nine Months Ended (In thousands, except per-share amounts) 2018 2017 2018 2017 Net income—basic $ 142,797 $ 65,142 $ 466,232 $ 114,272 Adjustment for dilutive Convertible Senior Notes due 2019, net of tax (1) — — — (215 ) Net income—diluted $ 142,797 $ 65,142 $ 466,232 $ 114,057 Average common shares outstanding—basic 213,309 215,279 214,499 215,194 Dilutive effect of Convertible Senior Notes due 2017 — 16 — 398 Dilutive effect of Convertible Senior Notes due 2019 — — — 611 Dilutive effect of share-based compensation arrangements (2) 4,593 4,096 4,284 4,027 Adjusted average common shares outstanding—diluted 217,902 219,391 218,783 220,230 Net income per share: Basic $ 0.67 $ 0.30 $ 2.17 $ 0.53 Diluted $ 0.66 $ 0.30 $ 2.13 $ 0.52 ______________________ (1) As applicable, includes coupon interest, amortization of discount and fees, and other changes in income that would result from the assumed conversion. Included in the nine months ended September 30, 2017 is a benefit related to our adjustment of estimated accrued expense to actual amounts, resulting from the January 2017 settlement of our obligations on the remaining Convertible Senior Notes due 2019. (2) The following number of shares of our common stock equivalents issued under our share-based compensation arrangements were not included in the calculation of diluted net income (loss) per share because they were anti-dilutive: Three Months Ended Nine Months Ended (In thousands) 2018 2017 2018 2017 Shares of common stock equivalents 338 676 338 440

Note 3 - Segment Reporting (Tab

Note 3 - Segment Reporting (Tables)	9 Months Ended
	Sep. 30, 2018
Segment Reporting [Abstract]
Schedule of Segment Reporting Information, by Segment [Table Text Block]	Summarized operating results for our segments for the periods indicated, are as follows: Three Months Ended Nine Months Ended (In thousands) 2018 2017 2018 2017 Mortgage Insurance Net premiums written—insurance (1) $ 253,827 $ 247,810 $ 743,765 $ 713,782 (Increase) decrease in unearned premiums 1,655 (11,108 ) 3,235 (26,184 ) Net premiums earned—insurance 255,482 236,702 747,000 687,598 Net investment income 38,824 32,540 110,227 93,643 Other income 725 760 2,153 2,118 Total (2) 295,031 270,002 859,380 783,359 Provision for losses 20,715 35,980 77,468 100,926 Policy acquisition costs 5,667 5,554 18,780 18,406 Other operating expenses before corporate allocations 33,152 36,941 98,302 114,169 Total (3) 59,534 78,475 194,550 233,501 Adjusted pretax operating income before corporate allocations 235,497 191,527 664,830 549,858 Allocation of corporate operating expenses 19,794 11,737 58,507 41,817 Allocation of interest expense 11,083 11,282 32,552 34,539 Adjusted pretax operating income $ 204,620 $ 168,508 $ 573,771 $ 473,502 ______________________ (1) Net of ceded premiums written under the QSR Program and the Single Premium QSR Program. See Note 7 for additional information. (2) Excludes net losses on investments and other financial instruments of $4.5 million and $30.8 million for the three and nine months ended September 30, 2018 , and net gains on investments and other financial instruments of $2.5 million and $5.0 million for the three and nine months ended September 30, 2017 , not included in adjusted pretax operating income. (3) Includes inter-segment expenses as follows: Three Months Ended Nine Months Ended (In thousands) 2018 2017 2018 2017 Inter-segment expenses $ 766 $ 1,491 $ 2,653 $ 5,726 Three Months Ended Nine Months Ended (In thousands) 2018 2017 2018 2017 Services Net premiums earned—insurance (1) $ 2,949 $ — $ 5,325 $ — Services revenue (2) 37,332 41,062 109,211 121,126 Net investment income (1) 171 — 197 — Other income (1) 449 — 844 — Total (2) 40,901 41,062 115,577 121,126 Provision for losses (1) 242 — 295 — Cost of services 26,001 27,544 73,628 82,196 Other operating expenses before corporate allocations 14,772 12,781 39,531 38,188 Restructuring and other exit costs (3) 407 5,463 1,987 5,463 Total 41,422 45,788 115,441 125,847 Adjusted pretax operating income (loss) before corporate allocations (521 ) (4,726 ) 136 (4,721 ) Allocation of corporate operating expenses 2,948 3,730 8,742 10,852 Allocation of interest expense 4,452 4,433 13,354 13,293 Adjusted pretax operating income (loss) $ (7,921 ) $ (12,889 ) $ (21,960 ) $ (28,866 ) ______________________ (1) Results from inclusion of the operations of EnTitle Direct, a national title insurance and settlement services company, acquired in March 2018. (2) Includes inter-segment revenues as follows: Three Months Ended Nine Months Ended (In thousands) 2018 2017 2018 2017 Inter-segment revenues $ 766 $ 1,491 $ 2,653 $ 5,726 (3) Does not include impairment of long-lived assets and loss from the sale of a business line, which are not components of adjusted pretax operating income. Selected balance sheet information for our segments, as of the periods indicated, is as follows: At September 30, 2018 (In thousands) Mortgage Insurance Services Total Total assets $ 6,095,101 $ 174,383 $ 6,269,484 At December 31, 2017 (In thousands) Mortgage Insurance Services Total Total assets $ 5,733,918 $ 166,963 $ 5,900,881
Reconciliation of Operating Profit (Loss) from Segments to Consolidated [Table Text Block]	The reconciliation of adjusted pretax operating income to consolidated pretax income is as follows: Three Months Ended Nine Months Ended (In thousands) 2018 2017 2018 2017 Adjusted pretax operating income (loss): Mortgage Insurance (1) $ 204,620 $ 168,508 $ 573,771 $ 473,502 Services (1) (7,921 ) (12,889 ) (21,960 ) (28,866 ) Total adjusted pretax operating income 196,699 155,619 551,811 444,636 Net gains (losses) on investments and other financial instruments (4,480 ) 2,480 (30,771 ) 4,960 Loss on induced conversion and debt extinguishment — (45,766 ) — (51,469 ) Acquisition-related expenses (2) (2 ) (54 ) (418 ) (126 ) Impairment of goodwill — — — (184,374 ) Amortization and impairment of other acquired intangible assets (3,472 ) (2,890 ) (8,968 ) (25,042 ) Impairment of other long-lived assets and loss from the sale of a business line (3) (4,057 ) (6,575 ) (3,953 ) (6,575 ) Consolidated pretax income $ 184,688 $ 102,814 $ 507,701 $ 182,010 ______________________ (1) Includes inter-segment expenses and revenues as listed in the notes to the preceding tables. (2) Acquisition-related expenses represent expenses incurred to effect the acquisition of a business, net of adjustments to accruals previously recorded for acquisition expenses. (3)

Note 4 - Fair Value of Financ_3

Note 4 - Fair Value of Financial Instruments (Tables)	9 Months Ended
	Sep. 30, 2018
Fair Value Disclosures [Abstract]
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]	The following is a list of assets that are measured at fair value by hierarchy level as of September 30, 2018 : (In thousands) Level I Level II Total Assets at Fair Value Investment Portfolio: U.S. government and agency securities $ 234,507 $ 21,545 $ 256,052 State and municipal obligations — 345,029 345,029 Money market instruments 156,396 — 156,396 Corporate bonds and notes — 2,480,097 2,480,097 RMBS — 272,125 272,125 CMBS — 576,829 576,829 Other ABS — 674,509 674,509 Equity securities 145,198 3,514 148,712 Other investments (1) — 149,265 149,265 Total Investments at Fair Value (2) 536,101 4,522,913 5,059,014 (3) Total Assets at Fair Value $ 536,101 $ 4,522,913 $ 5,059,014 (3) ______________________ (1) Comprising short-term certificates of deposit and commercial paper. (2) Does not include certain other invested assets ( $3.6 million ), primarily invested in limited partnership investments valued using the net asset value as a practical expedient. Includes cash collateral held under securities lending agreements ( $31.8 million ) reinvested in money market instruments. (3) Includes $34.4 million of securities loaned to third-party Borrowers under securities lending agreements, classified as other assets in our consolidated balance sheets. See Note 5 for more information. The following is a list of assets that are measured at fair value by hierarchy level as of December 31, 2017 : (In thousands) Level I Level II Total Assets at Fair Value Investment Portfolio: U.S. government and agency securities $ 124,969 $ 8,023 $ 132,992 State and municipal obligations — 386,111 386,111 Money market instruments 213,357 — 213,357 Corporate bonds and notes — 2,304,017 2,304,017 RMBS — 216,749 216,749 CMBS — 503,955 503,955 Other ABS — 676,158 676,158 Foreign government and agency securities — 36,448 36,448 Equity securities 175,205 860 176,065 Other investments (1) — 25,720 25,720 Total Investments at Fair Value (2) 513,531 4,158,041 4,671,572 (3) Total Assets at Fair Value $ 513,531 $ 4,158,041 $ 4,671,572 (3) ______________________ (1) Comprising short-term certificates of deposit and commercial paper. (2) Does not include certain other invested assets ( $0.3 million ), primarily invested in limited partnerships, accounted for as cost-method investments and not measured at fair value. Includes cash collateral held under securities lending agreements ( $19.4 million ) reinvested in money market instruments. (3) Includes $28.0 million of securities loaned to third-party Borrowers under securities lending agreements, classified as other assets in our consolidated balance sheets. See Note 5
Fair Value, by Balance Sheet Grouping [Table Text Block]	The carrying value and estimated fair value of other selected assets and liabilities not carried at fair value in our condensed consolidated balance sheets were as follows as of the dates indicated: September 30, 2018 December 31, 2017 (In thousands) Carrying Amount Estimated Fair Value Carrying Amount Estimated Fair Value Assets: Other invested assets (1) $ — $ — $ 334 $ 3,226 Liabilities: Senior notes 1,029,511 1,053,528 1,027,074 1,093,934 ______________________ (1)

Note 5 - Investments (Tables)

Note 5 - Investments (Tables)	9 Months Ended
	Sep. 30, 2018
Investments [Abstract]
Available for Sale Securities [Table Text Block]	Our available for sale securities within our investment portfolio consisted of the following as of the dates indicated: September 30, 2018 (In thousands) Amortized Cost Fair Value Gross Unrealized Gains Gross Unrealized Losses Fixed-maturities available for sale: U.S. government and agency securities $ 75,369 $ 72,645 (1) $ — $ 2,724 State and municipal obligations 140,877 139,986 1,859 2,750 Corporate bonds and notes 2,158,991 2,108,779 4,262 54,474 RMBS 258,152 250,056 (2) 4 8,100 CMBS 536,982 525,858 363 11,487 Other ABS 675,686 673,418 967 3,235 Total securities available for sale $ 3,846,057 $ 3,770,742 (3) $ 7,455 $ 82,770 ______________________ (1) Includes securities with a fair value of $10.5 million serving as collateral for FHLB advances. (2) Includes securities with a fair value of $66.1 million serving as collateral for FHLB advances. (3) Includes $7.0 million of fixed-maturity securities loaned to third-party Borrowers under securities lending agreements, classified as other assets in our condensed consolidated balance sheets, as further described below. December 31, 2017 (In thousands) Amortized Cost Fair Value Gross Unrealized Gains Gross Unrealized Losses Fixed-maturities available for sale: U.S. government and agency securities $ 69,667 $ 69,396 $ 96 $ 367 State and municipal obligations 156,587 161,722 5,834 699 Corporate bonds and notes 1,869,318 1,894,886 33,620 8,052 RMBS 189,455 187,229 636 2,862 CMBS 451,595 453,394 3,409 1,610 Other ABS 672,715 674,548 2,655 822 Foreign government and agency securities 31,417 32,207 823 33 Total fixed-maturities available for sale 3,440,754 3,473,382 (1) 47,073 14,445 Equity securities available for sale (2) 176,349 176,065 (1) 1,705 1,989 Total debt and equity securities available for sale $ 3,617,103 $ 3,649,447 $ 48,778 $ 16,434 ______________________ (1) Includes $14.7 million of fixed maturity securities and $13.2 million of equity securities loaned to third-party Borrowers under securities lending agreements, classified as other assets in our condensed consolidated balance sheets, as further described below. (2) Primarily consists of investments in fixed-income and equity exchange-traded funds and publicly-traded business development company equities. For the nine months ended September 30, 2018 , we did not transfer any securities from the available for sale or trading categories.
Gross Unrealized Losses and Fair Value of Available for Sale Securities [Table Text Block]	the following tables show the gross unrealized losses and fair values, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position, as of the dates indicated. Included in the amounts as of September 30, 2018 and December 31, 2017 are loaned securities under securities lending agreements that are classified as other assets in our condensed consolidated balance sheets, as further described below. September 30, 2018 ( $ in thousands ) Description of Securities Less Than 12 Months 12 Months or Greater Total # of securities Fair Value Unrealized Losses # of securities Fair Value Unrealized Losses # of securities Fair Value Unrealized Losses U.S. government and agency securities 9 $ 39,342 $ 1,944 5 $ 11,758 $ 780 14 $ 51,100 $ 2,724 State and municipal obligations 25 76,914 2,166 6 13,172 584 31 90,086 2,750 Corporate bonds and notes 383 1,619,774 43,840 35 157,323 10,634 418 1,777,097 54,474 RMBS 23 169,259 3,271 28 80,158 4,829 51 249,417 8,100 CMBS 78 423,684 10,098 11 26,830 1,389 89 450,514 11,487 Other ABS 118 461,978 3,002 16 24,890 233 134 486,868 3,235 Total 636 $ 2,790,951 $ 64,321 101 $ 314,131 $ 18,449 737 $ 3,105,082 $ 82,770 December 31, 2017 ( $ in thousands ) Description of Securities Less Than 12 Months 12 Months or Greater Total # of securities Fair Value Unrealized Losses # of securities Fair Value Unrealized Losses # of securities Fair Value Unrealized Losses U.S. government and agency securities 6 $ 23,309 $ 129 3 $ 9,799 $ 238 9 $ 33,108 $ 367 State and municipal obligations 21 65,898 699 — — — 21 65,898 699 Corporate bonds and notes 152 672,318 4,601 32 139,105 3,451 184 811,423 8,052 RMBS 8 19,943 204 26 101,812 2,658 34 121,755 2,862 CMBS 35 139,353 1,395 4 3,518 215 39 142,871 1,610 Other ABS 92 260,864 777 7 8,297 45 99 269,161 822 Foreign government and agency securities 5 7,397 33 — — — 5 7,397 33 Equity securities 13 149,785 1,989 — — — 13 149,785 1,989 Total 332 $ 1,338,867 $ 9,827 72 $ 262,531 $ 6,607 404 $ 1,601,398 $ 16,434
Trading Securities [Table Text Block]	The trading securities within our investment portfolio, which are recorded at fair value, consisted of the following as of the dates indicated: (In thousands) September 30, December 31, Trading securities: State and municipal obligations $ 185,494 $ 214,841 Corporate bonds and notes 235,422 307,271 RMBS 22,069 29,520 CMBS 50,971 50,561 Foreign government and agency securities — 4,241 Total $ 493,956 $ 606,434 (1) ______________________ (1)
Securities Lending Agreements Balances [Table Text Block]	Key balances related to our securities lending agreements consisted of the following as of the dates indicated: (In thousands) September 30, December 31, Loaned securities (1) : U.S. government and agency securities $ 90 $ — Corporate bonds and notes 7,427 13,862 Foreign government and agency securities — 867 Equity securities 26,847 13,235 Total loaned securities, at fair value $ 34,364 $ 27,964 Total loaned securities, at amortized cost $ 34,651 $ 27,846 Securities collateral on deposit from Borrowers (2) 3,367 9,342 Reinvested cash collateral, at estimated fair value (3) 31,799 19,357 ______________________ (1) Our securities loaned under securities lending agreements are reported at fair value within other assets in our condensed consolidated balance sheets. All of our securities lending agreements are classified as overnight and revolving. None of the amounts are subject to offsetting. (2) Securities collateral on deposit with us from Borrowers may not be transferred or re-pledged unless the Borrower is in default, and is therefore not reflected in our condensed consolidated financial statements. (3)
Net Gains (Losses) on Investments and Other Financial Instruments [Table Text Block]	Net gains (losses) on investments and other financial instruments consisted of: Three Months Ended Nine Months Ended (In thousands) 2018 2017 2018 2017 Net realized gains (losses): Fixed-maturities available for sale (1) $ (4,219 ) $ 137 $ (9,030 ) $ (3,552 ) Equity securities (69 ) 33 571 418 Trading securities (260 ) (223 ) (910 ) (6,266 ) Short-term investments 7 14 — (18 ) Other invested assets 83 — 346 — Other gains (losses) 11 7 46 25 Net realized gains (losses) on investments (4,447 ) (32 ) (8,977 ) (9,393 ) Other-than-temporary impairment losses (900 ) — (1,744 ) (1,000 ) Net unrealized gains (losses) on investment securities (2) 1,405 2,353 (17,132 ) 14,517 Total net gains (losses) on investments (3,942 ) 2,321 (27,853 ) 4,124 Net gains (losses) on other financial instruments (538 ) 159 (2,918 ) 836 Net gains (losses) on investments and other financial instruments $ (4,480 ) $ 2,480 $ (30,771 ) $ 4,960 ______________________ (1) Components of net realized gains (losses) on fixed-maturities available for sale include: Three Months Ended Nine Months Ended (In thousands) 2018 2017 2018 2017 Gross investment gains from sales and redemptions $ 814 $ 419 $ 1,831 $ 5,150 Gross investment losses from sales and redemptions (5,033 ) (282 ) (10,861 ) (8,702 ) (2) These amounts include unrealized gains (losses) on investment securities other than securities available for sale. For the three and nine months ended September 30, 2017
Net Unrealized Gains (Losses) on Investment Securities [Table Text Block]	The net changes in unrealized gains (losses) from trading securities and equity securities still held at period end were as follows for the periods indicated: Three Months Ended Nine Months Ended (In thousands) 2018 2017 2018 2017 Net changes in unrealized gains (losses) (1) : Equity securities $ 2,971 $ — $ 2,238 $ — Trading securities (2) (2,622 ) 2,694 (18,506 ) 10,011 Net changes in unrealized gains (losses) on investment securities $ 349 $ 2,694 $ (16,268 ) $ 10,011 ______________________ (1) Related only to securities still held at period end. All amounts shown are included in net gains (losses) on investments and other financial instruments. Prior to the implementation of the update to the standard for the accounting of financial instruments effective January 1, 2018, the unrealized losses associated with equity securities were classified in accumulated other comprehensive income. (2)
Contractual Maturities [Table Text Block]	The contractual maturities of fixed-maturity investments available for sale were as follows: September 30, 2018 Available for Sale (In thousands) Amortized Cost Fair Value Due in one year or less (1) $ 51,228 $ 51,101 Due after one year through five years (1) 823,314 809,555 Due after five years through 10 years (1) 1,099,144 1,065,556 Due after 10 years (1) 401,551 395,198 RMBS (2) 258,152 250,056 CMBS (2) 536,982 525,858 Other ABS (2) 675,686 673,418 Total (3) $ 3,846,057 $ 3,770,742 ______________________ (1) Actual maturities may differ as a result of calls before scheduled maturity. (2) RMBS, CMBS and Other ABS are shown separately, as they are not due at a single maturity date. (3)

Note 6 - Goodwill and Other A_2

Note 6 - Goodwill and Other Acquired Intangible Assets, Net (Tables)	9 Months Ended
	Sep. 30, 2018
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Goodwill [Table Text Block]	All of our goodwill and other acquired intangible assets relate to our Services segment. The following table shows the changes in the carrying amount of goodwill for the year-to-date periods ended September 30, 2018 and December 31, 2017 : (In thousands) Goodwill Accumulated Impairment Losses Net Balance at December 31, 2016 $ 197,265 $ (2,095 ) $ 195,170 Goodwill acquired 126 — 126 Impairment losses — (184,374 ) (184,374 ) Balance at December 31, 2017 197,391 (186,469 ) 10,922 Goodwill acquired — — — Impairment losses — — — Balance at September 30, 2018 $ 197,391 $ (186,469 ) $ 10,922
Schedule of Other Intangible Assets [Table Text Block]	The following is a summary of the gross and net carrying amounts and accumulated amortization of our other acquired intangible assets as of the periods indicated: September 30, 2018 (In thousands) Original Amount Acquired Accumulated Amortization and Impairment Net Carrying Amount Client relationships (1) $ 82,530 $ (46,569 ) $ 35,961 Technology (2) 15,250 (11,567 ) 3,683 Trade name and trademarks 8,340 (3,649 ) 4,691 Client backlog 6,680 (6,680 ) — Non-competition agreements 185 (175 ) 10 Licenses 463 (23 ) 440 Total $ 113,448 $ (68,663 ) $ 44,785 December 31, 2017 (In thousands) Original Amount Acquired Accumulated Amortization Net Carrying Amount Client relationships (1) $ 82,530 $ (41,596 ) $ 40,934 Technology (2) 15,250 (8,922 ) 6,328 Trade name and trademarks 8,340 (3,003 ) 5,337 Client backlog 6,680 (6,006 ) 674 Non-competition agreements 185 (168 ) 17 Total $ 112,985 $ (59,695 ) $ 53,290 ______________________ (1) Includes a cumulative impairment charge of $14.9 million . (2) Includes a cumulative impairment charge of $0.9 million
Schedule of Other Intangible Assets, Future Amortization Expense [Table Text Block]	The estimated aggregate amortization expense for the remainder of 2018 and thereafter is as follows (in thousands): 2018 $ 3,461 2019 8,146 2020 6,827 2021 5,413 2022 4,881 2023 4,430 Thereafter 11,627 Total $ 44,785

Note 7 - Reinsurance (Tables)

Note 7 - Reinsurance (Tables)	9 Months Ended
	Sep. 30, 2018
Reinsurance Disclosures [Abstract]
Reinsurance, Net Premiums Written and Earned [Table Text Block]	The effect of reinsurance on our mortgage insurance net premiums written and earned is as follows: Three Months Ended Nine Months Ended (In thousands) 2018 2017 2018 2017 Net premiums written—insurance: Direct $ 278,118 $ 265,927 $ 819,812 $ 766,219 Ceded (1) (24,291 ) (18,117 ) (76,047 ) (52,437 ) Net premiums written—insurance $ 253,827 $ 247,810 $ 743,765 $ 713,782 Net premiums earned—insurance: Direct $ 271,487 $ 250,541 $ 795,811 $ 729,832 Assumed 6 7 19 21 Ceded (1) (16,011 ) (13,846 ) (48,830 ) (42,255 ) Net premiums earned—insurance $ 255,482 $ 236,702 $ 747,000 $ 687,598 ______________________ (1)
Single Premium QSR Program and QSR Program Details [Table Text Block]	The following tables show the amounts related to the Single Premium QSR Program and the QSR Program for the periods indicated: Single Premium QSR Program Three Months Ended Nine Months Ended (In thousands) 2018 2017 2018 2017 Ceded premiums written (1) $ 20,920 $ 13,248 $ 64,818 $ 36,064 Ceded premiums earned (1) 11,181 6,771 32,718 18,941 Ceding commissions written 8,070 5,156 24,571 14,002 Ceding commissions earned (2) 5,635 3,536 16,546 9,721 Ceded losses 1,060 406 2,973 1,443 QSR Program Three Months Ended Nine Months Ended (In thousands) 2018 2017 2018 2017 Ceded premiums written (1) $ 3,174 $ 4,621 $ 10,621 $ 15,137 Ceded premiums earned (1) 4,632 6,826 15,502 22,064 Ceding commissions written 918 1,323 3,058 4,328 Ceding commissions earned (2) 2,738 2,925 9,182 10,198 Ceded losses 131 257 383 517 ______________________ (1) Net of profit commission. (2)

Note 8 - Other Assets (Tables)

Note 8 - Other Assets (Tables)	9 Months Ended
	Sep. 30, 2018
Other Assets [Abstract]
Schedule of Other Assets [Table Text Block]	The following table shows the components of other assets as of the dates indicated: (In thousands) September 30, December 31, Deposit with the IRS (Note 9) $ 88,557 $ 88,557 Corporate-owned life insurance 82,800 85,862 Internal-use software (1) 51,191 48,751 Property and equipment (2) 38,060 38,291 Accrued investment income 34,430 31,389 Loaned securities 34,364 27,964 Unbilled receivables 19,580 22,257 Deferred policy acquisition costs 16,922 16,987 Reinsurance recoverables 13,542 8,492 Other 35,826 39,299 Total other assets $ 415,272 $ 407,849 ______________________ (1) Internal-use software at cost, less accumulated amortization of $57.2 million and $48.4 million at September 30, 2018 and December 31, 2017 , respectively. Amortization expense was $2.9 million and $2.7 million for the three-month periods ended September 30, 2018 and 2017 , respectively, and $8.6 million and $7.9 million for the nine-month periods ended September 30, 2018 and 2017 , respectively. (2) Property and equipment at cost, less accumulated depreciation of $61.0 million and $57.6 million at September 30, 2018 and December 31, 2017 , respectively. Depreciation expense was $2.1 million and $1.9 million for the three-month periods ended September 30, 2018 and 2017 , respectively, and $5.9 million and $4.9 million for the nine-month periods ended September 30, 2018 and 2017

Note 10 - Losses and Loss Adj_2

Note 10 - Losses and Loss Adjustment Expense (Tables)	9 Months Ended
	Sep. 30, 2018
Insurance Loss Reserves [Abstract]
Reserve for Losses and LAE by Segment	Our reserve for losses and LAE, at the end of each period indicated, consisted of: (In thousands) September 30, December 31, Mortgage insurance loss reserves $ 408,980 $ 507,588 Services loss reserves (1) 3,480 — Total reserve for losses and LAE $ 412,460 $ 507,588 ______________________ (1)
Mortgage Insurance Reserve for Losses and LAE by Category	The following table shows our mortgage insurance reserve for losses and LAE by category at the end of each period indicated: (In thousands) September 30, December 31, Reserves for losses by category: Prime $ 231,916 $ 285,022 Alt-A and A minus and below 129,262 170,873 IBNR and other 14,505 16,021 LAE 11,203 13,349 Reinsurance recoverable (1) 9,977 8,315 Total primary reserves 396,863 493,580 Total pool reserves (2) 11,705 13,463 Total First-lien reserves 408,568 507,043 Other (3) 412 545 Total reserve for losses $ 408,980 $ 507,588 ______________________ (1) Represents ceded losses on captive reinsurance transactions, the QSR Program and the Single Premium QSR Program. These amounts are included in the reinsurance recoverables reported in other assets in our condensed consolidated balance sheets. (2) Includes reinsurance recoverable of $20 thousand and $35 thousand as of September 30, 2018 and December 31, 2017 , respectively. (3)
Mortgage Insurance Reserve for Losses and LAE Rollforward	The following table presents information relating to our mortgage insurance reserve for losses, including our IBNR reserve and LAE but excluding our Second-lien premium deficiency reserve, for the periods indicated: Nine Months Ended (In thousands) 2018 2017 Balance at beginning of period $ 507,588 $ 760,269 Less: Reinsurance recoverables (1) 8,350 6,851 Balance at beginning of period, net of reinsurance recoverables 499,238 753,418 Add: Losses and LAE incurred in respect of default notices reported and unreported in: Current year (2) 100,047 145,798 Prior years (24,075 ) (45,331 ) Total incurred 75,972 100,467 Deduct: Paid claims and LAE related to: Current year (2) 2,316 3,639 Prior years 173,911 301,228 Total paid 176,227 304,867 (3) Balance at end of period, net of reinsurance recoverables 398,983 549,018 Add: Reinsurance recoverables (1) 9,997 7,470 Balance at end of period $ 408,980 $ 556,488 ______________________ (1) Related to ceded losses recoverable, if any, on captive reinsurance transactions, the QSR Program and the Single Premium QSR Program. See Note 7 for additional information. (2) Related to underlying defaulted loans with a most recent default notice dated in the year indicated. For example, if a loan had defaulted in a prior year, but then subsequently cured and later re-defaulted in the current year, that default would be considered a current year default. (3) Includes the payment of $54.8 million

Note 11 - Senior Notes (Tables)

Note 11 - Senior Notes (Tables)	9 Months Ended
	Sep. 30, 2018
Senior Notes [Abstract]
Schedule of Senior Notes [Table Text Block]	The carrying value of our senior notes at September 30, 2018 and December 31, 2017 was as follows: (In thousands) September 30, December 31, 5.500% Senior Notes due 2019 $ 158,148 $ 157,636 5.250% Senior Notes due 2020 232,500 231,834 7.000% Senior Notes due 2021 195,682 195,146 4.500% Senior Notes due 2024 443,181 442,458 Total Senior Notes $ 1,029,511 $ 1,027,074

Note 12 - Other Liabilities (Ta

Note 12 - Other Liabilities (Tables)	9 Months Ended
	Sep. 30, 2018
Other Liabilities [Abstract]
Other Liabilities [Table Text Block]	The following table shows the components of other liabilities as of the dates indicated: (In thousands) September 30, December 31, Deferred ceding commission $ 92,987 $ 89,907 FHLB advances 71,430 — Accrued compensation 48,712 67,687 Payable for securities (1) 43,076 1,000 Amount payable on the return of cash collateral under securities lending agreements 31,799 19,357 Current federal income taxes 11,278 96,740 Other 80,080 79,154 Total other liabilities $ 379,362 $ 353,845 ______________________ (1)

Note 15 - Accumulated Other C_2

Note 15 - Accumulated Other Comprehensive Income (Loss) (Tables)	9 Months Ended
	Sep. 30, 2018
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]	The following table shows the rollforward of accumulated other comprehensive income (loss) as of the periods indicated: Three Months Ended September 30, 2018 Nine Months Ended September 30, 2018 (In thousands) Before Tax Tax Effect Net of Tax Before Tax Tax Effect Net of Tax Balance at beginning of period $ (73,345 ) $ (15,402 ) $ (57,943 ) $ 32,669 $ 9,584 $ 23,085 Cumulative effect of adopting the accounting standard update for financial instruments — — — 284 60 224 Cumulative effect of adopting the accounting standard update for the reclassification of certain tax effects — — — — (2,724 ) 2,724 Balance adjusted for cumulative effect of adopting accounting standard updates (73,345 ) (15,402 ) (57,943 ) 32,953 6,920 26,033 OCI: Unrealized gains (losses) on investments: Unrealized holding gains (losses) arising during the period (6,762 ) (1,421 ) (5,341 ) (118,719 ) (24,931 ) (93,788 ) Less: Reclassification adjustment for net gains (losses) included in net income (1) (5,120 ) (1,076 ) (4,044 ) (10,775 ) (2,263 ) (8,512 ) Net unrealized gains (losses) on investments (1,642 ) (345 ) (1,297 ) (107,944 ) (22,668 ) (85,276 ) Unrealized foreign currency translation adjustments — — — 4 1 3 OCI (1,642 ) (345 ) (1,297 ) (107,940 ) (22,667 ) (85,273 ) Balance at end of period $ (74,987 ) $ (15,747 ) $ (59,240 ) $ (74,987 ) $ (15,747 ) $ (59,240 ) Three Months Ended September 30, 2017 Nine Months Ended September 30, 2017 (In thousands) Before Tax Tax Effect Net of Tax Before Tax Tax Effect Net of Tax Balance at beginning of period $ 27,878 $ 9,761 $ 18,117 $ (19,063 ) $ (6,668 ) $ (12,395 ) OCI: Unrealized gains (losses) on investments: Unrealized holding gains (losses) arising during the period 9,598 3,359 6,239 52,069 18,224 33,845 Less: Reclassification adjustment for net gains (losses) included in net income (1) 170 59 111 (4,134 ) (1,447 ) (2,687 ) Net unrealized gains (losses) on investments 9,428 3,300 6,128 56,203 19,671 36,532 Unrealized foreign currency translation adjustments 39 11 28 205 69 136 OCI 9,467 3,311 6,156 56,408 19,740 36,668 Balance at end of period $ 37,345 $ 13,072 $ 24,273 $ 37,345 $ 13,072 $ 24,273 ______________________ (1)

Note 16 - Statutory Informati_2

Note 16 - Statutory Information (Tables)	9 Months Ended
	Sep. 30, 2018
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information [Abstract]
Risk To Capital Calculation [Table Text Block]	Radian Guaranty’s Risk-to-capital calculation appears in the table below. For purposes of the Risk-to-capital calculation, as well as the Risk-to-capital requirements imposed by certain states, statutory capital is defined as the sum of statutory policyholders’ surplus plus statutory contingency reserves. September 30, December 31, ($ in millions) RIF, net (1) $ 40,241.6 $ 36,793.5 Common stock and paid-in capital $ 1,866.0 $ 1,866.0 Surplus Note 100.0 100.0 Unassigned earnings (deficit) (708.9 ) (765.0 ) Statutory policyholders’ surplus 1,257.1 1,201.0 Contingency reserve 1,995.8 1,667.0 Statutory capital $ 3,252.9 $ 2,868.0 Risk-to-capital 12.4:1 12.8:1 ______________________ (1)

Note 1 - Condensed Consolidat_4

Note 1 - Condensed Consolidated Financial Statements - Business Overview, Recent Developments and Significant Accounting Policies Business Overview (Details) $ in Billions	9 Months Ended
	Sep. 30, 2018USD ($)segment
Business Overview [Abstract]
Number of Reportable Business Segments | segment	2
Mortgage Insurance Segment
Mortgage Insurance [Abstract]
Private Mortgage Insurance Protects Lenders For Loans Made With Less Than This Maximum Down Payment Percentage	20.00%
Private Mortgage Insurance Protects Lenders For Refinancings Made to Home Buyers With Less Than This Maximum Equity-Ownership Percentage	20.00%
Mortgage Insurance Segment | Total primary reserves
Mortgage Insurance [Abstract]
Direct Primary Mortgage Insurance RIF | $	$ 55.6

Note 1 - Condensed Consolidat_5

Note 1 - Condensed Consolidated Financial Statements - Business Overview, Recent Developments and Significant Accounting Policies Current Year Developments (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended		9 Months Ended	12 Months Ended
	Sep. 30, 2018	Jun. 30, 2018	Dec. 31, 2018	Jun. 30, 2018	Sep. 30, 2018	Dec. 31, 2018	Aug. 16, 2018	Dec. 31, 2017	Aug. 09, 2017
Impairment of Impairment of Internal-Use Software	$ 3,600
Deposit Assets	88,557				$ 88,557			$ 88,557
Mortgage and Real Estate Services Segment
Restructuring and other exit costs	900				2,400
Payments for Restructuring	400				1,900
Mortgage and Real Estate Services Segment | Scenario, Forecast
Restructuring and other exit costs			$ 200			$ 2,600
Mortgage and Real Estate Services Segment | Asset Impairment Charges
Restructuring and other exit costs	500				600
Mortgage and Real Estate Services Segment | Asset Impairment Charges | Scenario, Forecast
Restructuring and other exit costs						500
Mortgage and Real Estate Services Segment | Employee Severance and Benefit Costs | Scenario, Forecast
Restructuring and other exit costs						800
Mortgage and Real Estate Services Segment | Facility and Lease Termination Costs | Scenario, Forecast
Restructuring and other exit costs						$ 1,300
Third Quarter 2017 Repurchase Program
Stock Repurchase Program, Authorized Amount									$ 50,000
Stock Repurchased During Period, Shares				3,022,856
Accelerated Share Repurchases, Final Price Paid Per Share				$ 16.56
Third Quarter 2018 Repurchase Program
Stock Repurchase Program, Authorized Amount							$ 100,000
Stock Repurchase Program, Remaining Authorized Repurchase Amount	100,000				100,000
REMIC Residual | Internal Revenue Service (IRS)
Income Tax Expense (Benefit) Recorded as a Result of Finalized IRS Settlement		$ (73,600)
Qualified Deposit Assets With The U.S. Department Of Treasury Expected to be Submitted	31,000				31,000
Deposit Assets	$ 89,000				$ 89,000

Note 1 - Condensed Consolidat_6

Note 1 - Condensed Consolidated Financial Statements - Business Overview, Recent Developments and Significant Accounting Policies Significant Accounting Policies (Details) - USD ($)		3 Months Ended		9 Months Ended
		Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017	Dec. 31, 2016
Unbilled Receivables - Services Contracts		$ 19,580,000		$ 19,580,000		$ 22,257,000
ASU 2016-01
Increase in Invested Assets						2,300,000
Retained Earnings | ASU 2016-01
Cumulative Effect of New Accounting Principle in Period of Adoption						2,061,000	$ 0
Retained Earnings | ASU 2018-02
Cumulative Effect of New Accounting Principle in Period of Adoption						(2,724,000)	0
AOCI Attributable to Parent | ASU 2016-01
Cumulative Effect of New Accounting Principle in Period of Adoption						224,000	0
AOCI Attributable to Parent | ASU 2018-02
Cumulative Effect of New Accounting Principle in Period of Adoption						2,724,000	$ 0
Unrealized Loss Related to Equity Securities [Member] | Retained Earnings | ASU 2016-01
Cumulative Effect of New Accounting Principle in Period of Adoption						(200,000)
Practical Expedient to Measure Certain Other Investments Using the NAV [Member] | Retained Earnings | ASU 2016-01
Cumulative Effect of New Accounting Principle in Period of Adoption						2,300,000
Mortgage and Real Estate Services Segment
Sales Revenue, Services and Other, Net	[1]	37,781,000	$ 41,062,000	110,055,000	$ 121,126,000
Inter-segment revenues		766,000	1,491,000	2,653,000	5,726,000
Net Premiums Earned and Net Investment Income		3,100,000		5,500,000
Bad-debt expense		0	0	0	0
Accounts Receivable - Services Contracts		12,544,000		12,544,000		17,391,000
Unbilled Receivables - Services Contracts						22,257,000
Deferred Revenues - Services Contracts		4,131,000		4,131,000		$ 3,235,000
Mortgage and Real Estate Services Segment | Mortgage Services
Sales Revenue, Services and Other, Net		14,663,000	17,005,000	44,998,000	53,158,000
Mortgage and Real Estate Services Segment | Real Estate Services
Sales Revenue, Services and Other, Net		20,920,000	17,386,000	58,124,000	49,863,000
Mortgage and Real Estate Services Segment | Title Services
Sales Revenue, Services and Other, Net		$ 2,198,000	$ 6,671,000	$ 6,933,000	$ 18,105,000
[1]	Includes inter-segment revenues of $0.8 million and $2.7 million for the three and nine months ended September 30, 2018 and $1.5 million and $5.7 million for the three and nine months ended September 30, 2017 , respectively. For the three and nine months ended September 30, 2018 , amounts exclude $3.1 million and $5.5 million , respectively, of Services segment net premiums earned—insurance and net investment income, as both are excluded from the scope of the revenue recognition standard. See Note 3

Note 2 - Net Income Per Share N

Note 2 - Net Income Per Share Net Income (Loss) Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Net income—diluted		$ 142,797	$ 65,142	$ 466,232	$ 114,057
Dilutive effect of share-based compensation arrangements	[1]	4,593	4,096	4,284	4,027
Adjusted average common shares outstanding—diluted		217,902	219,391	218,783	220,230
Net income (loss) per share—diluted		$ 0.66	$ 0.30	$ 2.13	$ 0.52
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Net income—basic		$ 142,797	$ 65,142	$ 466,232	$ 114,272
Average common shares outstanding - basic		213,309	215,279	214,499	215,194
Net income (loss) per share - basic		$ 0.67	$ 0.30	$ 2.17	$ 0.53
Convertible Debt | Convertible Senior Notes Due 2019
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Adjustment for dilutive Convertible Senior Notes due 2019, net of tax	[2]	$ 0	$ 0	$ 0	$ (215)
Dilutive effect of Convertible Senior Notes		0	0	0	611
Convertible Debt | Convertible Senior Notes Due 2017
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Dilutive effect of Convertible Senior Notes		0	16	0	398
Stock Compensation Plan [Member]
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Shares of common stock equivalents		338	676	338	440
[1]	The following number of shares of our common stock equivalents issued under our share-based compensation arrangements were not included in the calculation of diluted net income (loss) per share because they were anti-dilutive: Three Months Ended Nine Months Ended (In thousands) 2018 2017 2018 2017 Shares of common stock equivalents 338 676 338 440
[2]	As applicable, includes coupon interest, amortization of discount and fees, and other changes in income that would result from the assumed conversion. Included in the nine months ended September 30, 2017

Note 3 - Segment Reporting Sche

Note 3 - Segment Reporting Schedule of Segment Reporting Information by Segment (Details) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2018USD ($)	Sep. 30, 2017USD ($)	Sep. 30, 2018USD ($)segment	Sep. 30, 2017USD ($)	Dec. 31, 2017USD ($)
Segment Reporting Information [Line Items]
Number of Operating Segments | segment				2
Net premiums earned—insurance		$ 258,431	$ 236,702	$ 752,325	$ 687,598
Services revenue		36,566	39,571	106,558	115,400
Net investment income		38,995	32,540	110,424	93,643
Other income		1,174	760	2,997	2,118
Policy acquisition costs		5,667	5,554	18,780	18,406
Cost of services		25,854	27,240	73,185	81,250
Other operating expenses before corporate allocations		70,125	64,195	203,552	201,322
Restructuring and other exit costs		4,464	12,038	5,940	12,038
Adjusted pretax operating income (loss)		196,699	155,619	551,811	444,636
Net gains (losses) on investments and other financial instruments		(4,480)	2,480	(30,771)	4,960
Total assets		6,269,484		6,269,484		$ 5,900,881
Mortgage Insurance Segment
Segment Reporting Information [Line Items]
Net premiums written—insurance	[1]	253,827	247,810	743,765	713,782
(Increase) decrease in unearned premiums		1,655	(11,108)	3,235	(26,184)
Net premiums earned—insurance		255,482	236,702	747,000	687,598
Net investment income		38,824	32,540	110,227	93,643
Other income		725	760	2,153	2,118
Total	[2]	295,031	270,002	859,380	783,359
Provision for losses		20,715	35,980	77,468	100,926
Policy acquisition costs		5,667	5,554	18,780	18,406
Other operating expenses before corporate allocations		33,152	36,941	98,302	114,169
Total	[3]	59,534	78,475	194,550	233,501
Adjusted pretax operating income (loss) before corporate allocations		235,497	191,527	664,830	549,858
Allocation of corporate operating expenses		19,794	11,737	58,507	41,817
Allocation of interest expense		11,083	11,282	32,552	34,539
Adjusted pretax operating income (loss)	[4]	204,620	168,508	573,771	473,502
Inter-segment expenses		766	1,491	2,653	5,726
Total assets		6,095,101		6,095,101		5,733,918
Mortgage and Real Estate Services Segment
Segment Reporting Information [Line Items]
Corporate Cash and Investments Allocated to Segments		0		0
Net premiums earned—insurance	[5]	2,949	0	5,325	0
Services revenue	[6]	37,332	41,062	109,211	121,126
Net investment income	[5]	171	0	197	0
Other income	[5]	449	0	844	0
Total	[6]	40,901	41,062	115,577	121,126
Provision for losses	[5]	242	0	295	0
Cost of services		26,001	27,544	73,628	82,196
Other operating expenses before corporate allocations		14,772	12,781	39,531	38,188
Restructuring and other exit costs	[7]	407	5,463	1,987	5,463
Total		41,422	45,788	115,441	125,847
Adjusted pretax operating income (loss) before corporate allocations		(521)	(4,726)	136	(4,721)
Allocation of corporate operating expenses		2,948	3,730	8,742	10,852
Allocation of interest expense		4,452	4,433	13,354	13,293
Adjusted pretax operating income (loss)	[4]	(7,921)	(12,889)	(21,960)	(28,866)
Inter-segment revenues		766	$ 1,491	2,653	$ 5,726
Total assets		174,383		174,383		$ 166,963
Senior Notes | Senior Notes Due 2019
Segment Reporting Information [Line Items]
Debt Instrument, Face Amount		$ 300,000		$ 300,000
[1]	Net of ceded premiums written under the QSR Program and the Single Premium QSR Program. See Note 7
[2]	Excludes net losses on investments and other financial instruments of $4.5 million and $30.8 million for the three and nine months ended September 30, 2018 , and net gains on investments and other financial instruments of $2.5 million and $5.0 million for the three and nine months ended September 30, 2017
[3]	Includes inter-segment expenses as follows: Three Months Ended Nine Months Ended (In thousands) 2018 2017 2018 2017 Inter-segment expenses $ 766 $ 1,491 $ 2,653 $ 5,726
[4]	Includes inter-segment expenses and revenues as listed in the notes to the preceding tables.
[5]	Results from inclusion of the operations of EnTitle Direct, a national title insurance and settlement services company, acquired in March 2018.
[6]	Includes inter-segment revenues as follows: Three Months Ended Nine Months Ended (In thousands) 2018 2017 2018 2017 Inter-segment revenues $ 766 $ 1,491 $ 2,653 $ 5,726
[7]	Does not include impairment of long-lived assets and loss from the sale of a business line, which are not components of adjusted pretax operating income.

Note 3 - Segment Reporting Reco

Note 3 - Segment Reporting Reconciliation of Segment to Consolidated Results Pretax (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended		12 Months Ended
		Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Adjusted pretax operating income (loss)		$ 196,699	$ 155,619	$ 551,811	$ 444,636
Net gains (losses) on investments and other financial instruments		(4,480)	2,480	(30,771)	4,960
Loss on induced conversion and debt extinguishment		0	(45,766)	0	(51,469)
Acquisition-related (expenses) benefits	[1]	(2)	(54)	(418)	(126)
Impairment of goodwill		0	0	0	(184,374)
Amortization and impairment of other acquired intangible assets		(3,472)	(2,890)	(8,968)	(25,042)
Impairment of other long-lived assets and loss from the sale of a business line	[2]	(4,057)	(6,575)	(3,953)	(6,575)
Consolidated pretax income (loss)		184,688	102,814	507,701	182,010
Mortgage Insurance Segment
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Adjusted pretax operating income (loss)	[3]	204,620	168,508	573,771	473,502
Mortgage and Real Estate Services Segment
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Adjusted pretax operating income (loss)	[3]	$ (7,921)	$ (12,889)	(21,960)	$ (28,866)
Impairment of goodwill				$ 0		$ (184,374)
[1]	Acquisition-related expenses represent expenses incurred to effect the acquisition of a business, net of adjustments to accruals previously recorded for acquisition expenses.
[2]	Included within restructuring and other exit costs. See Note 1.
[3]	Includes inter-segment expenses and revenues as listed in the notes to the preceding tables.

Note 4 - Fair Value of Financ_4

Note 4 - Fair Value of Financial Instruments Assets Measured at Fair Value by Hierarchy Level (Details) - USD ($)		3 Months Ended			9 Months Ended
		Sep. 30, 2018		Sep. 30, 2017	Sep. 30, 2018		Sep. 30, 2017	Dec. 31, 2017
Fair Value by Hierarchy Level [Line Items]
Other Investments		$ 3,585,000			$ 3,585,000			$ 334,000
Reinvested cash collateral held under securities lending agreements		31,800,000			31,800,000			19,357,000
Loaned securities		34,364,000			34,364,000			27,964,000
Carrying (Reported) Amount, Fair Value Disclosure
Fair Value by Hierarchy Level [Line Items]
Other Investments		3,600,000			3,600,000
Cost Method Investments	[1]	0			0			334,000
Fair Value, Measurements, Recurring
Fair Value by Hierarchy Level [Line Items]
Total Investments at Fair Value		5,059,014,000	[2],[3]		5,059,014,000	[2],[3]		4,671,572,000	[4],[5]
Total Assets at Fair Value		5,059,014,000	[3]		5,059,014,000	[3]		4,671,572,000	[5]
Fair Value, Assets, Level 1 to Level 2 Transfers, Amount		0		$ 0	0		$ 0
Fair Value, Assets, Level 2 to Level 1 Transfers, Amount		0		0	0		0
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net		0		0	0		0
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Transfers, Net		0		$ 0	0		$ 0
Fair Value, Measurements, Recurring | US government and agency securities
Fair Value by Hierarchy Level [Line Items]
Total Investments at Fair Value		256,052,000			256,052,000			132,992,000
Fair Value, Measurements, Recurring | State and municipal obligations
Fair Value by Hierarchy Level [Line Items]
Total Investments at Fair Value		345,029,000			345,029,000			386,111,000
Fair Value, Measurements, Recurring | Money market instruments
Fair Value by Hierarchy Level [Line Items]
Total Investments at Fair Value		156,396,000			156,396,000			213,357,000
Fair Value, Measurements, Recurring | Corporate bonds and notes
Fair Value by Hierarchy Level [Line Items]
Total Investments at Fair Value		2,480,097,000			2,480,097,000			2,304,017,000
Fair Value, Measurements, Recurring | RMBS
Fair Value by Hierarchy Level [Line Items]
Total Investments at Fair Value		272,125,000			272,125,000			216,749,000
Fair Value, Measurements, Recurring | CMBS
Fair Value by Hierarchy Level [Line Items]
Total Investments at Fair Value		576,829,000			576,829,000			503,955,000
Fair Value, Measurements, Recurring | Other ABS
Fair Value by Hierarchy Level [Line Items]
Total Investments at Fair Value		674,509,000			674,509,000			676,158,000
Fair Value, Measurements, Recurring | Foreign government securities
Fair Value by Hierarchy Level [Line Items]
Total Investments at Fair Value								36,448,000
Fair Value, Measurements, Recurring | Equity securities
Fair Value by Hierarchy Level [Line Items]
Total Investments at Fair Value		148,712,000			148,712,000			176,065,000
Fair Value, Measurements, Recurring | Other investments
Fair Value by Hierarchy Level [Line Items]
Total Investments at Fair Value		149,265,000	[6]		149,265,000	[6]		25,720,000	[7]
Fair Value, Inputs, Level 1 | Fair Value, Measurements, Recurring
Fair Value by Hierarchy Level [Line Items]
Total Investments at Fair Value		536,101,000	[2]		536,101,000	[2]		513,531,000	[4]
Total Assets at Fair Value		536,101,000			536,101,000			513,531,000
Fair Value, Inputs, Level 1 | Fair Value, Measurements, Recurring | US government and agency securities
Fair Value by Hierarchy Level [Line Items]
Total Investments at Fair Value		234,507,000			234,507,000			124,969,000
Fair Value, Inputs, Level 1 | Fair Value, Measurements, Recurring | State and municipal obligations
Fair Value by Hierarchy Level [Line Items]
Total Investments at Fair Value		0			0			0
Fair Value, Inputs, Level 1 | Fair Value, Measurements, Recurring | Money market instruments
Fair Value by Hierarchy Level [Line Items]
Total Investments at Fair Value		156,396,000			156,396,000			213,357,000
Fair Value, Inputs, Level 1 | Fair Value, Measurements, Recurring | Corporate bonds and notes
Fair Value by Hierarchy Level [Line Items]
Total Investments at Fair Value		0			0			0
Fair Value, Inputs, Level 1 | Fair Value, Measurements, Recurring | RMBS
Fair Value by Hierarchy Level [Line Items]
Total Investments at Fair Value		0			0			0
Fair Value, Inputs, Level 1 | Fair Value, Measurements, Recurring | CMBS
Fair Value by Hierarchy Level [Line Items]
Total Investments at Fair Value		0			0			0
Fair Value, Inputs, Level 1 | Fair Value, Measurements, Recurring | Other ABS
Fair Value by Hierarchy Level [Line Items]
Total Investments at Fair Value		0			0			0
Fair Value, Inputs, Level 1 | Fair Value, Measurements, Recurring | Foreign government securities
Fair Value by Hierarchy Level [Line Items]
Total Investments at Fair Value								0
Fair Value, Inputs, Level 1 | Fair Value, Measurements, Recurring | Equity securities
Fair Value by Hierarchy Level [Line Items]
Total Investments at Fair Value		145,198,000			145,198,000			175,205,000
Fair Value, Inputs, Level 1 | Fair Value, Measurements, Recurring | Other investments
Fair Value by Hierarchy Level [Line Items]
Total Investments at Fair Value		0	[6]		0	[6]		0	[7]
Fair Value, Inputs, Level 2 | Fair Value, Measurements, Recurring
Fair Value by Hierarchy Level [Line Items]
Total Investments at Fair Value		4,522,913,000	[2]		4,522,913,000	[2]		4,158,041,000	[4]
Total Assets at Fair Value		4,522,913,000			4,522,913,000			4,158,041,000
Fair Value, Inputs, Level 2 | Fair Value, Measurements, Recurring | US government and agency securities
Fair Value by Hierarchy Level [Line Items]
Total Investments at Fair Value		21,545,000			21,545,000			8,023,000
Fair Value, Inputs, Level 2 | Fair Value, Measurements, Recurring | State and municipal obligations
Fair Value by Hierarchy Level [Line Items]
Total Investments at Fair Value		345,029,000			345,029,000			386,111,000
Fair Value, Inputs, Level 2 | Fair Value, Measurements, Recurring | Money market instruments
Fair Value by Hierarchy Level [Line Items]
Total Investments at Fair Value		0			0			0
Fair Value, Inputs, Level 2 | Fair Value, Measurements, Recurring | Corporate bonds and notes
Fair Value by Hierarchy Level [Line Items]
Total Investments at Fair Value		2,480,097,000			2,480,097,000			2,304,017,000
Fair Value, Inputs, Level 2 | Fair Value, Measurements, Recurring | RMBS
Fair Value by Hierarchy Level [Line Items]
Total Investments at Fair Value		272,125,000			272,125,000			216,749,000
Fair Value, Inputs, Level 2 | Fair Value, Measurements, Recurring | CMBS
Fair Value by Hierarchy Level [Line Items]
Total Investments at Fair Value		576,829,000			576,829,000			503,955,000
Fair Value, Inputs, Level 2 | Fair Value, Measurements, Recurring | Other ABS
Fair Value by Hierarchy Level [Line Items]
Total Investments at Fair Value		674,509,000			674,509,000			676,158,000
Fair Value, Inputs, Level 2 | Fair Value, Measurements, Recurring | Foreign government securities
Fair Value by Hierarchy Level [Line Items]
Total Investments at Fair Value								36,448,000
Fair Value, Inputs, Level 2 | Fair Value, Measurements, Recurring | Equity securities
Fair Value by Hierarchy Level [Line Items]
Total Investments at Fair Value		3,514,000			3,514,000			860,000
Fair Value, Inputs, Level 2 | Fair Value, Measurements, Recurring | Other investments
Fair Value by Hierarchy Level [Line Items]
Total Investments at Fair Value		149,265,000	[6]		149,265,000	[6]		25,720,000	[7]
Fair Value, Inputs, Level 3 | Fair Value, Measurements, Recurring
Fair Value by Hierarchy Level [Line Items]
Total Assets at Fair Value		0			0			0
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability Value		0			0			0
Securities Financing Transaction, Fair Value
Fair Value by Hierarchy Level [Line Items]
Reinvested cash collateral held under securities lending agreements	[8]	31,799,000			31,799,000			19,357,000
Loaned securities	[9]	34,364,000			34,364,000			27,964,000
Securities Financing Transaction, Fair Value | Corporate bonds and notes
Fair Value by Hierarchy Level [Line Items]
Loaned securities	[9]	7,427,000			7,427,000			13,862,000
Securities Financing Transaction, Fair Value | Foreign government securities
Fair Value by Hierarchy Level [Line Items]
Loaned securities	[9]	0			0			867,000
Securities Financing Transaction, Fair Value | Equity securities
Fair Value by Hierarchy Level [Line Items]
Loaned securities	[9]	$ 26,847,000			$ 26,847,000			$ 13,235,000
[1]	As a result of implementing the update to the standard for the accounting of financial instruments effective January 1, 2018, other invested assets are no longer carried at amortized cost.
[2]	Does not include certain other invested assets ( $3.6 million ), primarily invested in limited partnership investments valued using the net asset value as a practical expedient. Includes cash collateral held under securities lending agreements ( $31.8 million
[3]	Includes $34.4 million of securities loaned to third-party Borrowers under securities lending agreements, classified as other assets in our consolidated balance sheets. See Note 5
[4]	Does not include certain other invested assets ( $0.3 million ), primarily invested in limited partnerships, accounted for as cost-method investments and not measured at fair value. Includes cash collateral held under securities lending agreements ( $19.4 million
[5]	Includes $28.0 million of securities loaned to third-party Borrowers under securities lending agreements, classified as other assets in our consolidated balance sheets. See Note 5
[6]	Comprising short-term certificates of deposit and commercial paper.
[7]	Comprising short-term certificates of deposit and commercial paper.
[8]	All cash collateral received has been reinvested in accordance with the securities lending agreements and is included in short-term investments in our condensed consolidated balance sheets. Amounts payable on the return of cash collateral under securities lending agreements are included within other liabilities in our condensed consolidated balance sheets.
[9]	Our securities loaned under securities lending agreements are reported at fair value within other assets in our condensed consolidated balance sheets. All of our securities lending agreements are classified as overnight and revolving. None

Note 4 - Fair Value of Financ_5

Note 4 - Fair Value of Financial Instruments Other Fair Value Disclosure (Details) - USD ($) $ in Thousands		Sep. 30, 2018	Dec. 31, 2017
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Senior Notes		$ 1,029,511	$ 1,027,074
Carrying (Reported) Amount, Fair Value Disclosure
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cost Method Investments	[1]	0	334
Senior Notes		1,029,511	1,027,074
Estimate of Fair Value, Fair Value Disclosure [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cost Method Investments, Fair Value Disclosure	[1]	0	3,226
Senior Notes, Fair Value		$ 1,053,528	$ 1,093,934
[1]	As a result of implementing the update to the standard for the accounting of financial instruments effective January 1, 2018, other invested assets are no longer carried at amortized cost.

Note 5 - Investments Available

Note 5 - Investments Available for Sale Securities (Details) - USD ($) $ in Thousands		Sep. 30, 2018	Dec. 31, 2017
Debt Securities, Available-for-sale [Line Items]
Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Collateral Pledged		$ 76,600
Loaned securities		34,364	$ 27,964
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax			48,778
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax			16,434
Available-for-sale Debt and Equity Securities, Amortized Cost			3,617,103
Available-for-sale Debt and Equity Securities, Fair Value			3,649,447
Fixed-maturities available for sale—at amortized cost		3,838,823	3,426,217
Fixed-maturities available for sale—at fair value (amortized cost $3,838,823 and $3,426,217)		3,763,710	3,458,719
US government and agency securities
Debt Securities, Available-for-sale [Line Items]
Available for Sale Securities, Amortized Cost			69,667
Available for Sale Securities, Fair Value			69,396
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax			96
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax			367
State and municipal obligations
Debt Securities, Available-for-sale [Line Items]
Available for Sale Securities, Amortized Cost			156,587
Available for Sale Securities, Fair Value			161,722
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax			5,834
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax			699
Corporate bonds and notes
Debt Securities, Available-for-sale [Line Items]
Available for Sale Securities, Amortized Cost			1,869,318
Available for Sale Securities, Fair Value			1,894,886
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax			33,620
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax			8,052
RMBS
Debt Securities, Available-for-sale [Line Items]
Available for Sale Securities, Amortized Cost			189,455
Available for Sale Securities, Fair Value			187,229
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax			636
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax			2,862
CMBS
Debt Securities, Available-for-sale [Line Items]
Available for Sale Securities, Amortized Cost			451,595
Available for Sale Securities, Fair Value			453,394
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax			3,409
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax			1,610
Other ABS
Debt Securities, Available-for-sale [Line Items]
Available for Sale Securities, Amortized Cost			672,715
Available for Sale Securities, Fair Value			674,548
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax			2,655
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax			822
Foreign government and agency securities
Debt Securities, Available-for-sale [Line Items]
Available for Sale Securities, Amortized Cost			31,417
Available for Sale Securities, Fair Value			32,207
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax			823
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax			33
Total fixed-maturities available for sale
Debt Securities, Available-for-sale [Line Items]
Available for Sale Securities, Amortized Cost			3,440,754
Available for Sale Securities, Fair Value	[1]		3,473,382
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax			47,073
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax			14,445
Fixed-maturities available for sale—at amortized cost	[2]	3,846,057
Fixed-maturities available for sale—at fair value (amortized cost $3,838,823 and $3,426,217)	[2]	3,770,742
Equity securities available for sale
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Equity Securities, Amortized Cost	[3]		176,349
Available-for-sale Equity Securities, Fair Value	[1],[3]		176,065
Available-for-sale Equity Securities, Accumulated Gross Unrealized Gain, before Tax	[3]		1,705
Available-for-sale Equity Securities, Accumulated Gross Unrealized Loss, before Tax	[3]		1,989
Securities Financing Transaction, Fair Value
Debt Securities, Available-for-sale [Line Items]
Loaned securities	[4]	34,364	27,964
Securities Financing Transaction, Fair Value | Corporate bonds and notes
Debt Securities, Available-for-sale [Line Items]
Loaned securities	[4]	7,427	13,862
Securities Financing Transaction, Fair Value | Foreign government and agency securities
Debt Securities, Available-for-sale [Line Items]
Loaned securities	[4]	0	867
Securities Financing Transaction, Fair Value | Equity securities available for sale
Debt Securities, Available-for-sale [Line Items]
Loaned securities	[4]	26,847	13,235
Fixed maturities | US government and agency securities
Debt Securities, Available-for-sale [Line Items]
Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Collateral Pledged		10,500
Available for Sale Securities, Amortized Cost		75,369
Available for Sale Securities, Fair Value	[5]	72,645
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax		0
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax		2,724
Fixed maturities | State and municipal obligations
Debt Securities, Available-for-sale [Line Items]
Available for Sale Securities, Amortized Cost		140,877
Available for Sale Securities, Fair Value		139,986
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax		1,859
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax		2,750
Fixed maturities | Corporate bonds and notes
Debt Securities, Available-for-sale [Line Items]
Available for Sale Securities, Amortized Cost		2,158,991
Available for Sale Securities, Fair Value		2,108,779
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax		4,262
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax		54,474
Fixed maturities | RMBS
Debt Securities, Available-for-sale [Line Items]
Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Collateral Pledged		66,100
Available for Sale Securities, Amortized Cost		258,152
Available for Sale Securities, Fair Value	[6]	250,056
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax		4
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax		8,100
Fixed maturities | CMBS
Debt Securities, Available-for-sale [Line Items]
Available for Sale Securities, Amortized Cost		536,982
Available for Sale Securities, Fair Value		525,858
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax		363
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax		11,487
Fixed maturities | Other ABS
Debt Securities, Available-for-sale [Line Items]
Available for Sale Securities, Amortized Cost		675,686
Available for Sale Securities, Fair Value		673,418
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax		967
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax		3,235
Fixed maturities | Total fixed-maturities available for sale
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax		7,455
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax		82,770
Available-for-sale Debt and Equity Securities, Amortized Cost		3,846,057
Available-for-sale Debt and Equity Securities, Fair Value	[7]	3,770,742
Fixed maturities | Securities Financing Transaction, Fair Value
Debt Securities, Available-for-sale [Line Items]
Loaned securities		$ 7,000	$ 14,700
[1]	Includes $14.7 million of fixed maturity securities and $13.2 million
[2]	Includes securities loaned under securities lending agreements.
[3]	Primarily consists of investments in fixed-income and equity exchange-traded funds and publicly-traded business development company equities.
[4]	Our securities loaned under securities lending agreements are reported at fair value within other assets in our condensed consolidated balance sheets. All of our securities lending agreements are classified as overnight and revolving. None
[5]	Includes securities with a fair value of $10.5 million
[6]	Includes securities with a fair value of $66.1 million
[7]	Includes $7.0 million

Note 5 - Investments Gross Unre

Note 5 - Investments Gross Unrealized Losses and Fair Value of Available for Sale Securities (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018USD ($)security	Sep. 30, 2017USD ($)	Sep. 30, 2018USD ($)security	Sep. 30, 2017USD ($)	Dec. 31, 2017USD ($)security
Continuous Loss Position Less Than Twelve Months [Abstract]
Number of Securities, Less than 12 Months | security	636		636		332
Fair Value, Less Than 12 Months	$ 2,790,951		$ 2,790,951		$ 1,338,867
Unrealized Losses, Less Than 12 Months	$ 64,321		$ 64,321		$ 9,827
Continuous Unrealized Loss Position, Twelve Months Or Greater
Number of Securities, 12 Months or Greater | security	101		101		72
Fair Value, 12 Months or Greater	$ 314,131		$ 314,131		$ 262,531
Unrealized Losses, 12 Months or Greater	$ 18,449		$ 18,449		$ 6,607
Continuous Loss Position, Total
Number of Securities, Total | security	737		737		404
Fair Value, Total	$ 3,105,082		$ 3,105,082		$ 1,601,398
Unrealized Losses, Total	82,770		82,770		16,434
Other than Temporary Impairment Losses, Investments	900	$ 0	1,744	$ 1,000
Other than Temporary Impairment Losses, Investments, Portion Recognized in Earnings, Net			0
Other than Temporary Impairment, Credit Losses Recognized in Earnings, Credit Losses on Debt Securities Held	$ 0		$ 0		$ 0
US government and agency securities
Continuous Loss Position Less Than Twelve Months [Abstract]
Number of Securities, Less than 12 Months | security	9		9		6
Fair Value, Less Than 12 Months	$ 39,342		$ 39,342		$ 23,309
Unrealized Losses, Less Than 12 Months	$ 1,944		$ 1,944		$ 129
Continuous Unrealized Loss Position, Twelve Months Or Greater
Number of Securities, 12 Months or Greater | security	5		5		3
Fair Value, 12 Months or Greater	$ 11,758		$ 11,758		$ 9,799
Unrealized Losses, 12 Months or Greater	$ 780		$ 780		$ 238
Continuous Loss Position, Total
Number of Securities, Total | security	14		14		9
Fair Value, Total	$ 51,100		$ 51,100		$ 33,108
Unrealized Losses, Total	$ 2,724		$ 2,724		$ 367
State and municipal obligations
Continuous Loss Position Less Than Twelve Months [Abstract]
Number of Securities, Less than 12 Months | security	25		25		21
Fair Value, Less Than 12 Months	$ 76,914		$ 76,914		$ 65,898
Unrealized Losses, Less Than 12 Months	$ 2,166		$ 2,166		$ 699
Continuous Unrealized Loss Position, Twelve Months Or Greater
Number of Securities, 12 Months or Greater | security	6		6		0
Fair Value, 12 Months or Greater	$ 13,172		$ 13,172		$ 0
Unrealized Losses, 12 Months or Greater	$ 584		$ 584		$ 0
Continuous Loss Position, Total
Number of Securities, Total | security	31		31		21
Fair Value, Total	$ 90,086		$ 90,086		$ 65,898
Unrealized Losses, Total	$ 2,750		$ 2,750		$ 699
Corporate bonds and notes
Continuous Loss Position Less Than Twelve Months [Abstract]
Number of Securities, Less than 12 Months | security	383		383		152
Fair Value, Less Than 12 Months	$ 1,619,774		$ 1,619,774		$ 672,318
Unrealized Losses, Less Than 12 Months	$ 43,840		$ 43,840		$ 4,601
Continuous Unrealized Loss Position, Twelve Months Or Greater
Number of Securities, 12 Months or Greater | security	35		35		32
Fair Value, 12 Months or Greater	$ 157,323		$ 157,323		$ 139,105
Unrealized Losses, 12 Months or Greater	$ 10,634		$ 10,634		$ 3,451
Continuous Loss Position, Total
Number of Securities, Total | security	418		418		184
Fair Value, Total	$ 1,777,097		$ 1,777,097		$ 811,423
Unrealized Losses, Total	$ 54,474		$ 54,474		$ 8,052
RMBS
Continuous Loss Position Less Than Twelve Months [Abstract]
Number of Securities, Less than 12 Months | security	23		23		8
Fair Value, Less Than 12 Months	$ 169,259		$ 169,259		$ 19,943
Unrealized Losses, Less Than 12 Months	$ 3,271		$ 3,271		$ 204
Continuous Unrealized Loss Position, Twelve Months Or Greater
Number of Securities, 12 Months or Greater | security	28		28		26
Fair Value, 12 Months or Greater	$ 80,158		$ 80,158		$ 101,812
Unrealized Losses, 12 Months or Greater	$ 4,829		$ 4,829		$ 2,658
Continuous Loss Position, Total
Number of Securities, Total | security	51		51		34
Fair Value, Total	$ 249,417		$ 249,417		$ 121,755
Unrealized Losses, Total	$ 8,100		$ 8,100		$ 2,862
CMBS
Continuous Loss Position Less Than Twelve Months [Abstract]
Number of Securities, Less than 12 Months | security	78		78		35
Fair Value, Less Than 12 Months	$ 423,684		$ 423,684		$ 139,353
Unrealized Losses, Less Than 12 Months	$ 10,098		$ 10,098		$ 1,395
Continuous Unrealized Loss Position, Twelve Months Or Greater
Number of Securities, 12 Months or Greater | security	11		11		4
Fair Value, 12 Months or Greater	$ 26,830		$ 26,830		$ 3,518
Unrealized Losses, 12 Months or Greater	$ 1,389		$ 1,389		$ 215
Continuous Loss Position, Total
Number of Securities, Total | security	89		89		39
Fair Value, Total	$ 450,514		$ 450,514		$ 142,871
Unrealized Losses, Total	$ 11,487		$ 11,487		$ 1,610
Other ABS
Continuous Loss Position Less Than Twelve Months [Abstract]
Number of Securities, Less than 12 Months | security	118		118		92
Fair Value, Less Than 12 Months	$ 461,978		$ 461,978		$ 260,864
Unrealized Losses, Less Than 12 Months	$ 3,002		$ 3,002		$ 777
Continuous Unrealized Loss Position, Twelve Months Or Greater
Number of Securities, 12 Months or Greater | security	16		16		7
Fair Value, 12 Months or Greater	$ 24,890		$ 24,890		$ 8,297
Unrealized Losses, 12 Months or Greater	$ 233		$ 233		$ 45
Continuous Loss Position, Total
Number of Securities, Total | security	134		134		99
Fair Value, Total	$ 486,868		$ 486,868		$ 269,161
Unrealized Losses, Total	$ 3,235		$ 3,235		$ 822
Foreign government and agency securities
Continuous Loss Position Less Than Twelve Months [Abstract]
Number of Securities, Less than 12 Months | security					5
Fair Value, Less Than 12 Months					$ 7,397
Unrealized Losses, Less Than 12 Months					$ 33
Continuous Unrealized Loss Position, Twelve Months Or Greater
Number of Securities, 12 Months or Greater | security					0
Fair Value, 12 Months or Greater					$ 0
Unrealized Losses, 12 Months or Greater					$ 0
Continuous Loss Position, Total
Number of Securities, Total | security					5
Fair Value, Total					$ 7,397
Unrealized Losses, Total					$ 33
Equity securities
Continuous Loss Position Less Than Twelve Months [Abstract]
Number of Securities, Less than 12 Months | security					13
Fair Value, Less Than 12 Months					$ 149,785
Unrealized Losses, Less Than 12 Months					$ 1,989
Continuous Unrealized Loss Position, Twelve Months Or Greater
Number of Securities, 12 Months or Greater | security					0
Fair Value, 12 Months or Greater					$ 0
Unrealized Losses, 12 Months or Greater					$ 0
Continuous Loss Position, Total
Number of Securities, Total | security					13
Fair Value, Total					$ 149,785
Unrealized Losses, Total					$ 1,989
Other than Temporary Impairment Losses, Investments, Portion Recognized in Earnings, Net				500
Convertible Debt Securities [Member]
Continuous Loss Position, Total
Other than Temporary Impairment Losses, Investments, Portion Recognized in Earnings, Net				$ 500

Note 5 - Investments Trading Se

Note 5 - Investments Trading Securities (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Trading, and Equity Securities, FV-NI	$ 493,956	$ 606,434	[1]
State and municipal obligations
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Trading, and Equity Securities, FV-NI	185,494	214,841
Corporate bonds and notes
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Trading, and Equity Securities, FV-NI	235,422	307,271
RMBS
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Trading, and Equity Securities, FV-NI	22,069	29,520
CMBS
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Trading, and Equity Securities, FV-NI	50,971	50,561
Foreign government and agency securities
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Trading, and Equity Securities, FV-NI	$ 0	$ 4,241
[1]	At December 31, 2017, includes a de minimis amount of loaned securities under securities lending agreements that are classified as other assets in our consolidated balance sheets, as further described below.

Note 5 - Investments Securities

Note 5 - Investments Securities Lending Agreements (Details)		9 Months Ended
		Sep. 30, 2018USD ($)	Dec. 31, 2017USD ($)
Securities Financing Transaction [Line Items]
Repurchase Agreements, Securities Lending Transactions, and Repurchase-to-Maturity Transactions Accounted for as Secured Borrowings, Description of Potential Risks		The Borrower generally may return the loaned securities to us at any time, which would require us to return the collateral within the standard settlement period for the loaned securities on the principal exchange or market in which the securities are traded. We manage this liquidity risk associated with cash collateral by maintaining the cash collateral in a short-term money-market fund with daily availability. The credit risk under these programs is reduced by the amounts of collateral received. On a daily basis, the value of the underlying securities that we have loaned to the Borrowers is compared to the value of cash and securities collateral we received from the Borrowers, and additional cash or securities are requested or returned, as applicable. In addition, we are indemnified against counterparty credit risk by the intermediary.
Loaned securities		$ 34,364,000	$ 27,964,000
Cash Collateral for Borrowed Securities		31,800,000	19,357,000
Securities Held as Collateral, at Fair Value		0
Securities Financing Transaction, Fair Value
Securities Financing Transaction [Line Items]
Loaned securities	[1]	34,364,000	27,964,000
Securities Borrowed, Fair Value of Collateral	[2]	3,367,000	9,342,000
Cash Collateral for Borrowed Securities	[3]	31,799,000	19,357,000
Securities Financing Transaction, Fair Value | US Government Corporations and Agencies Securities [Member]
Securities Financing Transaction [Line Items]
Loaned securities	[1]	90,000	0
Securities Financing Transaction, Fair Value | Corporate bonds and notes
Securities Financing Transaction [Line Items]
Loaned securities	[1]	7,427,000	13,862,000
Securities Financing Transaction, Fair Value | Foreign government and agency securities
Securities Financing Transaction [Line Items]
Loaned securities	[1]	0	867,000
Securities Financing Transaction, Fair Value | Equity securities
Securities Financing Transaction [Line Items]
Loaned securities	[1]	26,847,000	13,235,000
Securities Financing Transaction, Cost [Member]
Securities Financing Transaction [Line Items]
Loaned securities		$ 34,651,000	$ 27,846,000
Minimum [Member]
Securities Financing Transaction [Line Items]
Securities Lending Rate of Collateral Required		1.02
Minimum [Member] | Foreign government and agency securities
Securities Financing Transaction [Line Items]
Securities Lending Rate of Collateral Required		1.05
Minimum [Member] | Securities Financing Transaction, Fair Value
Securities Financing Transaction [Line Items]
Securities Lending Rate of Collateral Required		1
[1]	Our securities loaned under securities lending agreements are reported at fair value within other assets in our condensed consolidated balance sheets. All of our securities lending agreements are classified as overnight and revolving. None
[2]	Securities collateral on deposit with us from Borrowers may not be transferred or re-pledged unless the Borrower is in default, and is therefore not reflected in our condensed consolidated financial statements.
[3]	All cash collateral received has been reinvested in accordance with the securities lending agreements and is included in short-term investments in our condensed consolidated balance sheets. Amounts payable on the return of cash collateral under securities lending agreements are included within other liabilities in our condensed consolidated balance sheets.

Note 5 - Investments Net Gains

Note 5 - Investments Net Gains (Losses) on Investments and Other Financial Instruments (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Gain (Loss) on Securities [Line Items]
Other gains (losses), net realized gain (loss)		$ 11	$ 7	$ 46	$ 25
Net realized gains (losses) on investments		(4,447)	(32)	(8,977)	(9,393)
Other-than-temporary impairment losses		(900)	0	(1,744)	(1,000)
Unrealized Gain (Loss) on Securities	[1]	1,405	2,353	(17,132)	14,517
Total net gains (losses) on investments		(3,942)	2,321	(27,853)	4,124
Net gains (losses) on other financial instruments		(538)	159	(2,918)	836
Net gains (losses) on investments and other financial instruments		(4,480)	2,480	(30,771)	4,960
Fixed maturities
Gain (Loss) on Securities [Line Items]
Fixed maturities available for sale, net realized gain (loss)	[2]	(4,219)	137	(9,030)	(3,552)
Gross investment gains from sales and redemptions		814	419	1,831	5,150
Gross investment losses from sales and redemptions		(5,033)	(282)	(10,861)	(8,702)
Equity securities
Gain (Loss) on Securities [Line Items]
Equity securities, net realized gain (loss)		(69)	33	571	418
Trading Securities
Gain (Loss) on Securities [Line Items]
Trading securities, net realized gain (loss)		(260)	(223)	(910)	(6,266)
Short-term Investments
Gain (Loss) on Securities [Line Items]
Short-term investments, net realized gain (loss)		7	14	0	(18)
Other invested assets
Gain (Loss) on Securities [Line Items]
Other invested assets, net realized gain (loss)		$ 83	$ 0	$ 346	$ 0
[1]	These amounts include unrealized gains (losses) on investment securities other than securities available for sale. For the three and nine months ended September 30, 2017
[2]	Components of net realized gains (losses) on fixed-maturities available for sale include: Three Months Ended Nine Months Ended (In thousands) 2018 2017 2018 2017 Gross investment gains from sales and redemptions $ 814 $ 419 $ 1,831 $ 5,150 Gross investment losses from sales and redemptions (5,033 ) (282 ) (10,861 ) (8,702 )

Note 5 - Investments Net Unreal

Note 5 - Investments Net Unrealized Gains (Losses) on Investment Securities (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Gain (Loss) on Securities [Line Items]
Net changes in unrealized gains (losses) on investment securities	[1]	$ 349	$ 2,694	$ (16,268)	$ 10,011
Equity securities
Gain (Loss) on Securities [Line Items]
Equity Securities, Change in Unrealized Holding Gain (Loss)	[1]	2,971	0	2,238	0
Trading Securities
Gain (Loss) on Securities [Line Items]
Trading Securities, Change in Unrealized Holding Gain (Loss)	[1],[2]	$ (2,622)	$ 2,694	$ (18,506)	$ 10,011
[1]	Related only to securities still held at period end. All amounts shown are included in net gains (losses) on investments and other financial instruments. Prior to the implementation of the update to the standard for the accounting of financial instruments effective January 1, 2018, the unrealized losses associated with equity securities were classified in accumulated other comprehensive income.
[2]	Includes a de minimis amount of net changes in unrealized gains (losses) related to short-term securities.

Note 5 - Investments Contractua

Note 5 - Investments Contractual Maturities (Details) - USD ($) $ in Thousands		Sep. 30, 2018	Dec. 31, 2017
Available-for-sale Securities, Amortized Cost
Fixed-maturity investments available for sale, Total, Amortized Cost		$ 3,838,823	$ 3,426,217
Available-for-sale Securities, Fair Value
Fixed-maturity investments available for sale, Total, Fair Value		3,763,710	$ 3,458,719
Non Asset Backed Security Investments, Contractual Maturities [Member]
Available-for-sale Securities, Amortized Cost
Due in one year or less	[1]	51,228
Due after one year through five years	[1]	823,314
Due after five years through ten years	[1]	1,099,144
Due after ten years	[1]	401,551
Available-for-sale Securities, Fair Value
Due in one year or less	[1]	51,101
Due after one year through five years	[1]	809,555
Due after five years through ten years	[1]	1,065,556
Due after ten years	[1]	395,198
RMBS
Available-for-sale Securities, Amortized Cost
Fixed-maturity investments available for sale, Maturity, without Single Maturity Date, Amortized Cost	[2]	258,152
Available-for-sale Securities, Fair Value
Fixed-maturity investments available for sale, Maturity, without Single Maturity Date, Fair Value	[2]	250,056
CMBS
Available-for-sale Securities, Amortized Cost
Fixed-maturity investments available for sale, Maturity, without Single Maturity Date, Amortized Cost	[2]	536,982
Available-for-sale Securities, Fair Value
Fixed-maturity investments available for sale, Maturity, without Single Maturity Date, Fair Value	[2]	525,858
Other ABS
Available-for-sale Securities, Amortized Cost
Fixed-maturity investments available for sale, Maturity, without Single Maturity Date, Amortized Cost	[2]	675,686
Available-for-sale Securities, Fair Value
Fixed-maturity investments available for sale, Maturity, without Single Maturity Date, Fair Value	[2]	673,418
Total fixed-maturities available for sale
Available-for-sale Securities, Amortized Cost
Fixed-maturity investments available for sale, Total, Amortized Cost	[3]	3,846,057
Available-for-sale Securities, Fair Value
Fixed-maturity investments available for sale, Total, Fair Value	[3]	$ 3,770,742
[1]	Actual maturities may differ as a result of calls before scheduled maturity.
[2]	RMBS, CMBS and Other ABS are shown separately, as they are not due at a single maturity date.
[3]	Includes securities loaned under securities lending agreements.

Note 5 - Investments Other (Det

Note 5 - Investments Other (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Collateral Pledged	$ 76,600
FHLB advances	71,430	$ 0
Debt securities
Assets Held by Insurance Regulators	$ 15,400	$ 11,800

Note 6 - Goodwill and Other A_3

Note 6 - Goodwill and Other Acquired Intangible Assets, Net Schedule of Goodwill (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017	Dec. 31, 2016
Goodwill [Roll Forward]
Goodwill, Impairment Loss	$ 0	$ 0	$ 0	$ (184,374)
Mortgage and Real Estate Services Segment
Goodwill [Roll Forward]
Goodwill, Gross, Beginning of Period			197,391	197,265	$ 197,265
Goodwill, Acquired During Period			0		126
Goodwill, Gross, End of Period	197,391		197,391		197,391
Goodwill, Impaired, Accumulated Impairment Loss, Beginning of Period			(186,469)	$ (2,095)	(2,095)
Goodwill, Impairment Loss			0		(184,374)
Goodwill, Impaired, Accumulated Impairment Loss, End of Period	(186,469)		(186,469)		(186,469)
Goodwill, Net	$ 10,922		$ 10,922		$ 10,922	$ 195,170

Note 6 - Goodwill and Other A_4

Note 6 - Goodwill and Other Acquired Intangible Assets, Net Accounting Policy Considerations (Details)	9 Months Ended
	Sep. 30, 2018segment
Mortgage and Real Estate Services Segment
Goodwill [Line Items]
Number of Reporting Units	1

Note 6 - Goodwill and Other A_5

Note 6 - Goodwill and Other Acquired Intangible Assets, Net Schedule of Other Intangible Assets (Details) - USD ($) $ in Thousands		3 Months Ended
		Sep. 30, 2017	Sep. 30, 2018	Dec. 31, 2017
Acquired Finite-Lived Intangible Assets [Line Items]
Other Intangible Assets, Net Carrying Amount			$ 44,785
Mortgage and Real Estate Services Segment
Acquired Finite-Lived Intangible Assets [Line Items]
Other Intangible Assets, Original Acquired Amount			113,448	$ 112,985
Other Intangible Assets, Accumulated Amortization and Impairment			(68,663)	(59,695)
Other Intangible Assets, Net Carrying Amount			44,785	53,290
Mortgage and Real Estate Services Segment | Client relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Other Intangible Assets, Original Acquired Amount	[1]		82,530	82,530
Other Intangible Assets, Accumulated Amortization and Impairment	[1]		(46,569)	(41,596)
Other Intangible Assets, Net Carrying Amount	[1]		35,961	40,934
Impairment charge, Other Intangible Assets		$ 14,900
Mortgage and Real Estate Services Segment | Technology
Acquired Finite-Lived Intangible Assets [Line Items]
Other Intangible Assets, Original Acquired Amount	[2]		15,250	15,250
Other Intangible Assets, Accumulated Amortization and Impairment	[2]		(11,567)	(8,922)
Other Intangible Assets, Net Carrying Amount	[2]		3,683	6,328
Impairment charge, Other Intangible Assets		$ 900
Mortgage and Real Estate Services Segment | Trade name and trademarks
Acquired Finite-Lived Intangible Assets [Line Items]
Other Intangible Assets, Original Acquired Amount			8,340	8,340
Other Intangible Assets, Accumulated Amortization and Impairment			(3,649)	(3,003)
Other Intangible Assets, Net Carrying Amount			4,691	5,337
Mortgage and Real Estate Services Segment | Client backlog
Acquired Finite-Lived Intangible Assets [Line Items]
Other Intangible Assets, Original Acquired Amount			6,680	6,680
Other Intangible Assets, Accumulated Amortization and Impairment			(6,680)	(6,006)
Other Intangible Assets, Net Carrying Amount			0	674
Mortgage and Real Estate Services Segment | Non-competition agreements
Acquired Finite-Lived Intangible Assets [Line Items]
Other Intangible Assets, Original Acquired Amount			185	185
Other Intangible Assets, Accumulated Amortization and Impairment			(175)	(168)
Other Intangible Assets, Net Carrying Amount			10	$ 17
Mortgage and Real Estate Services Segment | Licenses
Acquired Finite-Lived Intangible Assets [Line Items]
Other Intangible Assets, Original Acquired Amount			463
Other Intangible Assets, Accumulated Amortization and Impairment			(23)
Other Intangible Assets, Net Carrying Amount			$ 440
[1]	Includes a cumulative impairment charge of $14.9 million
[2]	Includes a cumulative impairment charge of $0.9 million

Note 6 - Goodwill and Other A_6

Note 6 - Goodwill and Other Acquired Intangible Assets, Net Schedule of Future Amortization Expense for Other Intangible Assets (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2018USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]
2,018	$ 3,461
2,019	8,146
2,020	6,827
2,021	5,413
2,022	4,881
2,023	4,430
Thereafter	11,627
Total	$ 44,785
Other Intangible Assets, Remaining Amortization Period	15 years

Note 7 - Reinsurance Net Premiu

Note 7 - Reinsurance Net Premiums Written and Earned, Insurance (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Premiums Earned, Net [Abstract]
Net premiums earned—insurance		$ 258,431	$ 236,702	$ 752,325	$ 687,598
Mortgage Insurance Segment
Premiums Written, Net [Abstract]
Direct Premiums Written		278,118	265,927	819,812	766,219
Ceded Premiums Written	[1]	(24,291)	(18,117)	(76,047)	(52,437)
Net premiums written—insurance	[2]	253,827	247,810	743,765	713,782
Premiums Earned, Net [Abstract]
Direct Premiums Earned		271,487	250,541	795,811	729,832
Assumed Premiums Earned		6	7	19	21
Ceded Premiums Earned	[1]	(16,011)	(13,846)	(48,830)	(42,255)
Net premiums earned—insurance		$ 255,482	$ 236,702	$ 747,000	$ 687,598
[1]	Net of profit commission.
[2]	Net of ceded premiums written under the QSR Program and the Single Premium QSR Program. See Note 7

Note 7 - Reinsurance Reinsuranc

Note 7 - Reinsurance Reinsurance Transactions (Details) - Reinsurer Concentration Risk [Member] - Radian Guaranty - USD ($) $ in Thousands		Dec. 31, 2017	Oct. 31, 2017	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
2016 Single Premium QSR Program
Ceded Credit Risk [Line Items]
Percent of Ceded Risk								35.00%
Risk In Force				$ 6,400,000	$ 4,300,000	$ 6,400,000	$ 4,300,000
2018 Single Premium QSR Program
Ceded Credit Risk [Line Items]
Percent of Ceded Risk		65.00%
Risk In Force				1,600,000		1,600,000
Ceded Premiums Written			$ 335,000
Single Premium QSR Program
Ceded Credit Risk [Line Items]
Ceded Premiums Written	[1]			20,920	13,248	64,818	36,064
Ceded Premiums Earned	[1]			11,181	6,771	32,718	18,941
Ceding commissions written				8,070	5,156	24,571	14,002
Ceding Commissions Earned	[2]			5,635	3,536	16,546	9,721
Ceded losses				1,060	406	2,973	1,443
QSR Program
Ceded Credit Risk [Line Items]
Ceded Premiums Written	[1]			3,174	4,621	10,621	15,137
Ceded Premiums Earned	[1]			4,632	6,826	15,502	22,064
Ceding commissions written				918	1,323	3,058	4,328
Ceding Commissions Earned	[2]			2,738	2,925	9,182	10,198
Ceded losses				131	257	383	517
First Lien Mortgage Insurance Products [Member] | QSR Program
Ceded Credit Risk [Line Items]
Risk In Force				$ 1,000,000	$ 1,300,000	$ 1,000,000	$ 1,300,000
[1]	Net of profit commission.
[2]	Includes amounts reported in policy acquisition costs and other operating expenses.

Note 8 - Other Assets Component

Note 8 - Other Assets Components of Other Assets (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
Other Assets [Abstract]
Deposit with the IRS (Note 9)		$ 88,557		$ 88,557		$ 88,557
Corporate-owned life insurance		82,800		82,800		85,862
Internal-use software	[1]	51,191		51,191		48,751
Property and equipment	[2]	38,060		38,060		38,291
Accrued investment income		34,430		34,430		31,389
Loaned securities		34,364		34,364		27,964
Unbilled receivables		19,580		19,580		22,257
Deferred policy acquisition costs		16,922		16,922		16,987
Reinsurance recoverables		13,542		13,542		8,492
Other		35,826		35,826		39,299
Total other assets		415,272		415,272		407,849
Capitalized Computer Software, Accumulated Amortization		57,200		57,200		48,400
Capitalized Computer Software, Amortization		2,900	$ 2,700	8,600	$ 7,900
Property and Equipment, Owned, Accumulated Depreciation		61,000		61,000		$ 57,600
Depreciation expense		$ 2,100	$ 1,900	$ 5,900	$ 4,900
[1]	Internal-use software at cost, less accumulated amortization of $57.2 million and $48.4 million at September 30, 2018 and December 31, 2017 , respectively. Amortization expense was $2.9 million and $2.7 million for the three-month periods ended September 30, 2018 and 2017 , respectively, and $8.6 million and $7.9 million for the nine-month periods ended September 30, 2018 and 2017
[2]	Property and equipment at cost, less accumulated depreciation of $61.0 million and $57.6 million at September 30, 2018 and December 31, 2017 , respectively. Depreciation expense was $2.1 million and $1.9 million for the three-month periods ended September 30, 2018 and 2017 , respectively, and $5.9 million and $4.9 million for the nine-month periods ended September 30, 2018 and 2017

Note 9 - Income Taxes Income Ta

Note 9 - Income Taxes Income Tax (Details) $ in Millions	Sep. 30, 2018USD ($)
Operating Loss Carryforwards [Line Items]
Deferred Tax Assets, Tax Credit Carryforwards, Alternative Minimum Tax	$ 7
State and Local NOL Carryforwards [Member]
Operating Loss Carryforwards [Line Items]
Valuation Allowance, Amount	$ 53.1

Note 9 - Income Taxes Summary o

Note 9 - Income Taxes Summary of Income Tax Examinations (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Jun. 30, 2018	Sep. 30, 2018	Dec. 31, 2017
Income Tax Examination [Line Items]
Deferred Tax Assets, Tax Credit Carryforwards, Alternative Minimum Tax		$ 7,000
Deposit Assets		88,557	$ 88,557
Internal Revenue Service (IRS)
Income Tax Examination [Line Items]
Unrecognized Tax Benefits, Decrease Resulting from Settlements with Taxing Authorities		88,600
REMIC Residual | Internal Revenue Service (IRS)
Income Tax Examination [Line Items]
Income Tax Expense (Benefit) Recorded as a Result of Finalized IRS Settlement	$ (73,600)
Qualified Deposit Assets With The U.S. Department Of Treasury Expected to be Submitted		31,000
Deposit Assets		89,000
State and Local NOL Carryforwards [Member]
Income Tax Examination [Line Items]
Deferred Tax Assets, Valuation Allowance		$ 53,100

Note 10 - Losses and Loss Adj_3

Note 10 - Losses and Loss Adjustment Expense Reserve for Losses and LAE by Segment (Details) - USD ($) $ in Thousands	Sep. 30, 2018		Dec. 31, 2017	Sep. 30, 2017	Dec. 31, 2016
Liability for Claims and Claims Adjustment Expense [Line Items]
Reserve for losses and loss adjustment expense (“LAE”) (Note 10)	$ 412,460		$ 507,588
Mortgage Insurance Segment
Liability for Claims and Claims Adjustment Expense [Line Items]
Reserve for losses and loss adjustment expense (“LAE”) (Note 10)	408,980		507,588	$ 556,488	$ 760,269
Mortgage and Real Estate Services Segment
Liability for Claims and Claims Adjustment Expense [Line Items]
Reserve for losses and loss adjustment expense (“LAE”) (Note 10)	$ 3,480	[1]	$ 0
[1]	A majority of this amount is included in the reinsurance recoverables reported in other assets in our condensed consolidated balance sheet, and relates to the acquisition of EnTitle Direct, completed on March 27, 2018.

Note 10 - Losses and Loss Adj_4

Note 10 - Losses and Loss Adjustment Expense Mortgage Insurance Reserve for Losses and LAE by Category (Details) - USD ($) $ in Thousands		Sep. 30, 2018	Dec. 31, 2017	Sep. 30, 2017	Dec. 31, 2016
Liability for Future Policy Benefit, by Product Segment [Line Items]
Liability for Claims and Claims Adjustment Expense		$ 412,460	$ 507,588
Mortgage Insurance Segment
Liability for Future Policy Benefit, by Product Segment [Line Items]
Reinsurance recoverables	[1]	9,997	8,350	$ 7,470	$ 6,851
Liability for Claims and Claims Adjustment Expense		408,980	507,588	$ 556,488	$ 760,269
Prime | Mortgage Insurance Segment
Liability for Future Policy Benefit, by Product Segment [Line Items]
Liability for Unpaid Claims		231,916	285,022
Alt-A and A minus and below | Mortgage Insurance Segment
Liability for Future Policy Benefit, by Product Segment [Line Items]
Liability for Unpaid Claims		129,262	170,873
Primary Mortgage Product | Mortgage Insurance Segment
Liability for Future Policy Benefit, by Product Segment [Line Items]
IBNR and other		14,505	16,021
LAE		11,203	13,349
Reinsurance recoverables	[2]	9,977	8,315
Total primary reserves | Mortgage Insurance Segment
Liability for Future Policy Benefit, by Product Segment [Line Items]
Liability for Claims and Claims Adjustment Expense		396,863	493,580
Total pool reserves | Mortgage Insurance Segment
Liability for Future Policy Benefit, by Product Segment [Line Items]
Reinsurance recoverables	[2]	20	35
Liability for Claims and Claims Adjustment Expense	[3]	11,705	13,463
Total First-lien reserves | Mortgage Insurance Segment
Liability for Future Policy Benefit, by Product Segment [Line Items]
Liability for Claims and Claims Adjustment Expense		408,568	507,043
Other (Second-lien reserves) | Mortgage Insurance Segment
Liability for Future Policy Benefit, by Product Segment [Line Items]
Liability for Claims and Claims Adjustment Expense	[4]	$ 412	$ 545
[1]	Related to ceded losses recoverable, if any, on captive reinsurance transactions, the QSR Program and the Single Premium QSR Program. See Note 7
[2]	Represents ceded losses on captive reinsurance transactions, the QSR Program and the Single Premium QSR Program. These amounts are included in the reinsurance recoverables reported in other assets in our condensed consolidated balance sheets.
[3]	Includes reinsurance recoverable of $20 thousand and $35 thousand as of September 30, 2018 and December 31, 2017
[4]	Does not include our Second-lien premium deficiency reserve that is included in other liabilities.

Note 10 - Losses and Loss Adj_5

Note 10 - Losses and Loss Adjustment Expense Mortgage Insurance Reserve for Losses and LAE Rollforward (Details) $ in Thousands		9 Months Ended			12 Months Ended
		Sep. 30, 2018USD ($)incident	Sep. 30, 2017USD ($)		Dec. 31, 2017USD ($)
Liability for Claims and Claims Adjustment Expense [Line Items]
Number of Natural Disasters | incident		2
Loss reserve [Roll Forward]
Balance at beginning of period		$ 507,588
Deduct paid claims and LAE related to [Abstract]
Balance at end of period		412,460			$ 507,588
Mortgage Insurance Segment
Loss reserve [Roll Forward]
Balance at beginning of period		507,588	$ 760,269		760,269
Less: Reinsurance recoverables	[1]	8,350	6,851		6,851
Balance at beginning of period, net of reinsurance recoverables		499,238	753,418		753,418
Add losses and LAE incurred in respect of default notices reported and unreported in [Abstract]
Incurred Losses and LAE Current year	[2]	100,047	145,798
Incurred Losses and LAE Prior years		(24,075)	(45,331)
Total incurred losses and LAE		75,972	100,467
Deduct paid claims and LAE related to [Abstract]
Paid Losses and LAE Current year	[2]	2,316	3,639
Paid losses and LAE Prior years		173,911	301,228
Total paid losses and LAE		176,227	304,867	[3]
Balance at end of period, net of reinsurance recoverables		398,983	549,018		499,238
Add: Reinsurance recoverables	[1]	9,997	7,470		8,350
Balance at end of period		$ 408,980	$ 556,488		507,588
Default To Claim Rate Detail [Abstract]
Default To Claim Rate Estimate, Gross, For New Defaults		8.50%	10.50%
Liability for Unpaid Claims and Claims Adjustment Expense, Incurred but Not Reported (IBNR) Claims, Amount		$ 5,900			10,400
Mortgage Insurance Segment | Pool Insurance Mortgage Insurance Product
Loss reserve [Roll Forward]
Balance at beginning of period	[4]	13,463
Less: Reinsurance recoverables	[5]	35
Add losses and LAE incurred in respect of default notices reported and unreported in [Abstract]
Incurred Losses and LAE Prior years			$ 14,200
Deduct paid claims and LAE related to [Abstract]
Add: Reinsurance recoverables	[5]	20			35
Balance at end of period	[4]	11,705			13,463
Mortgage Insurance Segment | Primary Mortgage Product
Loss reserve [Roll Forward]
Less: Reinsurance recoverables	[5]	8,315
Deduct paid claims and LAE related to [Abstract]
Add: Reinsurance recoverables	[5]	$ 9,977			$ 8,315
Default To Claim Rate Detail [Abstract]
Weighted Average Default To Claim Rate Assumption Net Of Denials Rescissions and Reinstatements		34.00%			31.00%
Weighted Average Default To Claim Rate Assumption Net Of Denials Rescissions and Reinstatements Excluding Defaults in FEMA Designated Areas		35.00%			38.00%
Default To Claim Rate Estimate, Gross, For Pre-Foreclosure Stage Defaults		68.00%
Gross Default To Claim Rate Estimate		75.00%
Mortgage Insurance Segment | Hurricanes Harvey and Irma [Member] | Primary Mortgage Product
Default To Claim Rate Detail [Abstract]
Default To Claim Rate Estimate, Gross, For New Defaults		3.00%
2013 Freddie Mac Agreement [Member] | Radian Guaranty Inc [Member] | Mortgage Insurance Segment
Deduct paid claims and LAE related to [Abstract]
Paid losses and LAE Prior years			$ 54,800
[1]	Related to ceded losses recoverable, if any, on captive reinsurance transactions, the QSR Program and the Single Premium QSR Program. See Note 7
[2]	Related to underlying defaulted loans with a most recent default notice dated in the year indicated. For example, if a loan had defaulted in a prior year, but then subsequently cured and later re-defaulted in the current year, that default would be considered a current year default.
[3]	Includes the payment of $54.8 million
[4]	Includes reinsurance recoverable of $20 thousand and $35 thousand as of September 30, 2018 and December 31, 2017
[5]	Represents ceded losses on captive reinsurance transactions, the QSR Program and the Single Premium QSR Program. These amounts are included in the reinsurance recoverables reported in other assets in our condensed consolidated balance sheets.

Note 11 - Senior Notes Schedule

Note 11 - Senior Notes Schedule of Long Term Debt (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Debt Instrument [Line Items]
Senior Notes	$ 1,029,511	$ 1,027,074
Senior Notes Due 2019
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	5.50%	5.50%
Senior Notes	$ 158,148	$ 157,636
Senior Notes Due 2020
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	5.25%	5.25%
Senior Notes	$ 232,500	$ 231,834
Senior Notes Due 2021
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	7.00%	7.00%
Senior Notes	$ 195,682	$ 195,146
Senior Notes Due 2024 [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	4.50%	4.50%
Senior Notes	$ 443,181	$ 442,458

Note 12 - Other Liabilities Com

Note 12 - Other Liabilities Components of Other Liabilities (Details) - USD ($) $ in Thousands		Sep. 30, 2018	Dec. 31, 2017
Other Liabilities [Abstract]
Deferred ceding commission		$ 92,987	$ 89,907
FHLB advances		71,430	0
Accrued compensation		48,712	67,687
Payable for securities	[1]	43,076	1,000
Amount payable on the return of cash collateral under securities lending agreements		31,799	19,357
Current federal income taxes		11,278	96,740
Other		80,080	79,154
Total other liabilities		$ 379,362	$ 353,845
[1]	Represents the payable for purchases of securities that have not yet settled as of the balance sheet date.

Note 12 - Other Liabilities FHL

Note 12 - Other Liabilities FHLB Advances (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2018USD ($)	Dec. 31, 2017USD ($)
FHLB Advances [Line Items]
FHLB advances	$ 71,430	$ 0
Federal Home Loan Bank, Advances, Weighted Average Interest Rate	2.49%
Federal Home Loan Bank, Advances, Maturity Period, Fixed Rate	90 days
Long-term Debt, Maturities, Repayments of Principal, Remainder of Fiscal Year	$ 46,900
Long-term Debt, Maturities, Repayments of Principal in Year Two	11,500
Long-term Debt, Maturities, Repayments of Principal in Year Four	5,000
Long-term Debt, Maturities, Repayments of Principal after Year Five	8,000
Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Collateral Pledged	$ 76,600
Minimum [Member]
FHLB Advances [Line Items]
Federal Home Loan Bank, Ratio of Market Value of Collateral to Advances	1.03
Maximum [Member]
FHLB Advances [Line Items]
Federal Home Loan Bank, Ratio of Market Value of Collateral to Advances	1.05

Note 12 - Other Liabilities Rev

Note 12 - Other Liabilities Revolving Credit Facility (Details) - Revolving Credit Facility - USD ($) $ in Millions	Oct. 26, 2018	Sep. 30, 2018	Oct. 16, 2017
Line of Credit Facility [Line Items]
Line of Credit Facility, Current Borrowing Capacity			$ 225
Line of Credit Facility, Maximum Borrowing Capacity			$ 300
Line of Credit Facility, Fair Value of Amount Outstanding		$ 0
Subsequent Event
Line of Credit Facility [Line Items]
Line of Credit Facility, Current Borrowing Capacity	$ 267.5
Line of Credit Facility, Increase to Current Borrowing Capacity	$ 42.5

Note 13 - Commitments and Con_2

Note 13 - Commitments and Contingencies Legal Proceedings (Details)	9 Months Ended
	Sep. 30, 2018matter	Aug. 31, 2018Certificates	Apr. 12, 2018Certificates	Jun. 05, 2017Certificates	Dec. 17, 2016Certificates
Unasserted Claim | Minimum [Member]
Loss Contingencies [Line Items]
Minimum Number of Pending or Threatened Matters That Could Affect Our Results | matter	1
Insurance Claims | Total primary reserves
Loss Contingencies [Line Items]
Loss Contingency, Legal Actions Commencement, Period	2 years
Insurance Claims | Pool Insurance Mortgage Insurance Product
Loss Contingencies [Line Items]
Loss Contingency, Legal Actions Commencement, Period	3 years
Ocwen | Ocwen filings, Initial
Loss Contingencies [Line Items]
Insurance Certificates Issued Under Multiple Insurance Policies					9,420
Ocwen | Ocwen filings, Amended
Loss Contingencies [Line Items]
Insurance Certificates Issued Under Multiple Insurance Policies				8,870
Ocwen | Ocwen filings, Narrowed Scope
Loss Contingencies [Line Items]
Insurance Certificates Whose Scopes Were Narrowed as a Result of the Confidential Agreement			2,500
Nationstar | Insurance coverage decisions
Loss Contingencies [Line Items]
Insurance Certificates Issued Under Multiple Insurance Policies		3,014
Nationstar | Insurance premium refunds
Loss Contingencies [Line Items]
Insurance Certificates Issued Under Multiple Insurance Policies		2,231

Note 13 - Commitments and Con_3

Note 13 - Commitments and Contingencies Other - Guarantor Obligations (Details) - Indirect Guarantee of Indebtedness $ in Millions	Sep. 30, 2018USD ($)transaction
Guarantees [Abstract]
Guaranteed Structured Transactions | transaction	2
Remaining Credit Exposure | $	$ 90.3

Note 14 - Capital Stock (Detail

Note 14 - Capital Stock (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended							6 Months Ended
	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Jun. 30, 2018	Aug. 16, 2018	Aug. 09, 2017
Capital Stock [Line Items]
Common Stock, Dividends, Per Share, Declared	$ 0.0025	$ 0.0025	$ 0.0025	$ 0.0025	$ 0.0025	$ 0.0025	$ 0.0025
Third Quarter 2017 Repurchase Program
Capital Stock [Line Items]
Stock Repurchase Program, Authorized Amount										$ 50
Stock Repurchased During Period, Shares								3,022,856
Accelerated Share Repurchases, Final Price Paid Per Share								$ 16.56
Third Quarter 2018 Repurchase Program
Capital Stock [Line Items]
Stock Repurchase Program, Authorized Amount									$ 100
Stock Repurchase Program, Remaining Authorized Repurchase Amount	$ 100

Note 15 - Accumulated Other C_3

Note 15 - Accumulated Other Comprehensive Income (Loss) Rollforward of Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Jun. 30, 2018	Dec. 31, 2017
Other Comprehensive Income, Net of Tax [Abstract]
AOCI, Net of Tax, Balance at beginning of period				$ 23,085
Unrealized holding gains (losses) arising during the period		$ (5,341)	$ 6,239	(93,788)	$ 33,845
Less: Reclassification adjustment for net gains (losses) included in net income (loss)		(4,044)	111	(8,512)	(2,687)
Unrealized foreign currency translation adjustments		0	28	3	136
Other comprehensive income (loss), net of tax		(1,297)	6,156	(85,273)	36,668
AOCI, Net of Tax, Balance at end of period		(59,240)		(59,240)
Other Comprehensive Income
Other Comprehensive Income, before Tax [Abstract]
AOCI before Tax, Balance at beginning of period		(73,345)	27,878	32,669	(19,063)
AOCI before Tax, Balance adjusted for cumulative effect of adopting accounting standard updates		(73,345)		32,953
Unrealized holding gains (losses) arising during the period		(6,762)	9,598	(118,719)	52,069
Less: Reclassification adjustment for net gains (losses) included in net income	[1]	(5,120)	170	(10,775)	(4,134)
Net unrealized gains (losses) on investments		(1,642)	9,428	(107,944)	56,203
Unrealized foreign currency translation adjustments					205
Unrealized foreign currency translation adjustments		0	39	4
OCI		(1,642)	9,467	(107,940)	56,408
AOCI before Tax, Balance at end of period		(74,987)	37,345	(74,987)	37,345
Other Comprehensive Income, Tax [Abstract]
AOCI, Tax, Balance at beginning of period		(15,402)	9,761	9,584	(6,668)
AOCI, Tax, Balance adjusted for Cumulative Effect of Adopting Accounting Standard Updates		(15,402)		6,920
Unrealized holding gains (losses) arising during the period		(1,421)	3,359	(24,931)	18,224
Less: Reclassification adjustment for net gains (losses) included in net income	[1]	(1,076)	59	(2,263)	(1,447)
Net unrealized gains (losses) on investments		(345)	3,300	(22,668)	19,671
Unrealized foreign currency translation adjustments					69
Unrealized foreign currency translation adjustments		0	11	1
OCI		(345)	3,311	(22,667)	19,740
AOCI Tax, Balance at end of period		(15,747)	13,072	(15,747)	13,072
Other Comprehensive Income, Net of Tax [Abstract]
AOCI, Net of Tax, Balance at beginning of period		(57,943)	18,117	23,085	(12,395)
AOCI, Net of Tax, Balance adjusted for Cumulative Effect of Adopting Accounting Standard Updates		(57,943)		26,033
Unrealized holding gains (losses) arising during the period		(5,341)	6,239	(93,788)	33,845
Less: Reclassification adjustment for net gains (losses) included in net income (loss)	[1]	(4,044)	111	(8,512)	(2,687)
Net unrealized gains (losses) on investments		(1,297)	6,128	(85,276)	36,532
Unrealized foreign currency translation adjustments		0	28	3	136
Other comprehensive income (loss), net of tax		(1,297)	6,156	(85,273)	36,668
AOCI, Net of Tax, Balance at end of period		$ (59,240)	$ 24,273	$ (59,240)	$ 24,273
ASU 2016-01 | Other Comprehensive Income
Other Comprehensive Income, before Tax [Abstract]
AOCI before tax,Cumulative Effect of Adopting an Accounting Standard Update						$ 0	$ 284
Other Comprehensive Income, Tax [Abstract]
AOCI, Tax, Cumulative Effect of Adopting an Accounting Standard Update						0	60
Other Comprehensive Income, Net of Tax [Abstract]
AOCI, Net of Tax, Cumulative Effect of Adopting an Accounting Standard Update, Net of Tax						0	224
ASU 2018-02 | Other Comprehensive Income
Other Comprehensive Income, before Tax [Abstract]
AOCI before tax,Cumulative Effect of Adopting an Accounting Standard Update						0	0
Other Comprehensive Income, Tax [Abstract]
AOCI, Tax, Cumulative Effect of Adopting an Accounting Standard Update						0	(2,724)
Other Comprehensive Income, Net of Tax [Abstract]
AOCI, Net of Tax, Cumulative Effect of Adopting an Accounting Standard Update, Net of Tax						$ 0	$ 2,724
[1]	Included in net gains (losses) on investments and other financial instruments on our consolidated statements of operations.

Note 16 - Statutory Informati_3

Note 16 - Statutory Information Statutory Information (Details) $ in Millions	Sep. 30, 2018USD ($)state
Statutory Accounting Practices [Line Items]
Number Of States That Have A Statutory Or Regulatory Risk Based Capital Requirement | state	16
Risk To Capital Ratio, Regulatory Maximum	25
Non RBC States [Member] | Minimum [Member]
Statutory Accounting Practices [Line Items]
Capital Required for Capital Adequacy	$ 1
Non RBC States [Member] | Maximum [Member]
Statutory Accounting Practices [Line Items]
Capital Required for Capital Adequacy	5
Consolidated insurance subsidiaries
Statutory Accounting Practices [Line Items]
Restricted Net Assets Held by Consolidated Subsidiaries	$ 3,900

Note 16 - Statutory Informati_4

Note 16 - Statutory Information Risk To Capital Calculation (Details) $ in Millions		9 Months Ended
		Sep. 30, 2018USD ($)	Dec. 31, 2017USD ($)
Radian Guaranty
Risk to Capital Line Items [Line Items]
RIF, net	[1]	$ 40,241.6	$ 36,793.5
Common stock and paid-in capital		1,866	1,866
Surplus Note		100	100
Unassigned earnings (deficit)		(708.9)	(765)
Statutory policyholders’ surplus		1,257.1	1,201
Contingency reserve		1,995.8	1,667
Statutory capital		$ 3,252.9	$ 2,868
Risk-to-capital		12.4	12.8
Increase (decrease) in Statutory Capital and Surplus		$ 384.9
Statutory Net Income (Loss)		$ 376.3
Consolidated insurance subsidiaries
Risk to Capital Line Items [Line Items]
Risk-to-capital		11.7	12.1
[1]	Excludes risk ceded through reinsurance contracts (to third parties and affiliates) and RIF on defaulted loans.

Note 16 - Statutory Informati_5

Note 16 - Statutory Information Segregated Funds Held for Others (Details) $ in Millions	Sep. 30, 2018USD ($)
Segregated Funds Held for Others [Abstract]
Amounts held in escrow	$ 6.1