Radian (RDN) 10-Q 12 Nov 13 2013 Q3 Quarterly report Financial data

DEI_Information_Document

DEI Information Document	9 Months Ended
	Sep. 30, 2013	Nov. 06, 2013
Document Information [Line Items]	'	'
Entity Registrant Name	'Radian Group Inc.	'
Entity Central Index Key	'0000890926	'
Current Fiscal Year End Date	'--12-31	'
Entity Filer Category	'Accelerated Filer	'
Document Type	'10-Q	'
Document Period End Date	30-Sep-13	'
Document Fiscal Year Focus	'2013	'
Document Fiscal Period Focus	'Q3	'
Amendment Flag	'false	'
Entity Common Stock, Shares Outstanding	'	173,099,515
Entity Well-known Seasoned Issuer	'No	'
Entity Voluntary Filers	'No	'
Entity Current Reporting Status	'Yes	'

Condensed_Consolidated_Balance

Condensed Consolidated Balance Sheets (Unaudited) Statement (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Assets	'	'
Fixed-maturities held to maturity—at amortized cost (fair value $421 and $676)	$428	$679
Fixed-maturities available for sale—at fair value (amortized cost $97,819 and $39,481)	98,912	40,696
Equity securities available for sale—at fair value (cost $78,106 and $88,260)	121,868	112,139
Trading securities—at fair value	3,250,934	4,094,622
Short-term investments at fair value	1,423,784	777,532
Other invested assets (including variable interest entity (“VIE”) assets of $79,749 and $78,006)	129,394	126,750
Total investments	5,025,320	5,152,418
Cash	35,325	31,555
Restricted cash	22,991	24,226
Deferred policy acquisition costs	68,461	88,202
Accrued investment income	28,453	34,349
Accounts and notes receivable	85,047	87,519
Property and equipment, at cost (less accumulated depreciation of $100,900 and $98,909)	9,126	7,456
Derivative assets (including VIE derivative assets of $1,577 and $1,585)	20,844	13,609
Deferred income taxes, net	17,902	0
Reinsurance recoverables	57,260	89,204
Other assets (including VIE other assets of $93,375 and $99,337)	387,844	374,662
Total assets	5,758,573	5,903,200
LIABILITIES AND STOCKHOLDERS’ EQUITY	'	'
Unearned premiums	751,587	648,682
Reserve for losses and loss adjustment expenses (“LAE”)	2,346,879	3,149,936
Reserve for premium deficiency (“PDR”)	1,983	3,685
Long-term debt	921,927	663,571
VIE debt—at fair value	104,218	108,858
Derivative liabilities (including VIE derivative liabilities of $68,040 and $70,467)	344,870	266,873
Accounts payable and accrued expenses (including VIE accounts payable of $285 and $366)	392,589	325,270
Total liabilities	4,864,053	5,166,875
Commitments and Contingencies (Note 15)	'	'
Stockholders’ equity	'	'
Common stock: par value $.001 per share; 485,000,000 and 325,000,000 shares authorized at September 30, 2013 and December 31, 2012, respectively;190,634,951 and 151,131,173 shares issued at September 30, 2013 and December 31, 2012, respectively; 173,097,494 and 133,647,216 shares outstanding at September 30, 2013 and December 31, 2012, respectively	191	151
Treasury stock, at cost: 17,537,457 and 17,483,957 shares at September 30, 2013 and December 31, 2012, respectively	-892,807	-892,094
Additional paid-in capital	2,346,591	1,967,414
Retained deficit	-588,595	-355,241
Accumulated other comprehensive income	29,140	16,095
Total stockholders’ equity	894,520	736,325
Total liabilities and stockholders’ equity	$5,758,573	$5,903,200

Balance_Sheet_Parenthetical_Pa

Balance Sheet Parenthetical (Parentheticals) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, except Share data, unless otherwise specified
Fixed maturities held to maturity, Fair Value Disclosure	$421	$676
Fixed maturities available-for-sale, Amortized Cost Basis	97,819	39,481
Available-for-sale Equity Securities, Amortized Cost Basis	78,106	88,260
Variable Interest Entity Carrying Amount Of Other Invested Assets	79,749	78,006
Accumulated Depreciation	100,900	98,909
VIE Derivative Assets Carrying Amount	1,577	1,585
VIE Other Assets	93,375	99,337
VIE Derivative Liabilities	68,040	70,467
VIE Accounts Payable And Other Liabilities	$285	$366
Common Stock, Number of Shares, Par Value and Other Disclosures [Abstract]	'	'
Common Stock, Par or Stated Value Per Share	$0.00	$0.00
Common Stock, Shares Authorized	485,000,000	325,000,000
Common Stock, Shares, Issued	190,634,951	151,131,173
Common Stock, Shares, Outstanding	173,097,494	133,647,216
Treasury Stock, Shares	17,537,457	17,483,957

Condensed_Consolidated_Stateme

Condensed Consolidated Statements of Operations (Unaudited) (USD $)	3 Months Ended		9 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Premiums written - insurance	'	'	'	'
Direct	$268,886	$232,086	$784,180	$650,188
Assumed	-126	-918	-10,729	-89,434
Ceded	-17,918	-21,891	-64,195	-91,867
Net premiums written	250,842	209,277	709,256	468,887
(Increase) decrease in unearned premiums, net	-38,858	-18,314	-91,560	76,220
Net premiums earned—insurance	211,984	190,963	617,696	545,107
Net investment income	26,732	25,635	81,220	91,225
Net (losses) gains on investments	-7,132	84,659	-142,891	178,537
Change in fair value of derivative instruments	10,778	-41,056	-70,357	-146,937
Net gains (losses) on other financial instruments	902	-740	-3,585	-80,454
Gain on sale of affiliate	0	0	0	7,708
Other income	1,314	1,328	5,319	4,163
Total revenues	244,578	260,789	487,402	599,349
Expenses:	'	'	'	'
Provision for losses	157,174	176,352	429,524	653,374
Change in PDR	-2,325	966	-1,703	1,505
Policy acquisition costs	7,958	12,927	35,159	51,778
Other operating expenses	70,974	50,429	212,055	140,776
Interest expense	19,570	12,520	54,871	39,249
Total expenses	253,351	253,194	729,906	886,682
Equity in net income (loss) of affiliates	0	0	1	-13
Pretax (loss) income	-8,773	7,595	-242,503	-287,346
Income tax provision (benefit)	3,909	-6,730	-9,149	-13,180
Net (loss) income	($12,682)	$14,325	($233,354)	($274,166)
Basic net (loss) income per share	($0.07)	$0.11	($1.43)	($2.07)
Diluted net (loss) income per share	($0.07)	$0.11	($1.43)	($2.07)
Weighted-average number of common shares outstanding—basic	171,830	132,521	162,828	132,530
Weighted-average number of common and common equivalent shares outstanding—diluted	171,830	134,033	162,828	132,530
Dividends per share	$0.00	$0.00	$0.01	$0.01

Condensed_Consolidated_Stateme1

Condensed Consolidated Statements of Comprehensive Loss (Unaudited) (USD $)	3 Months Ended				9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013		Sep. 30, 2012		Sep. 30, 2013		Sep. 30, 2012
Net (loss) income	($12,682)		$14,325		($233,354)		($274,166)
Foreign currency translation adjustments:	'		'		'		'
Unrealized foreign currency translation adjustment, net of tax	0		1		0		-7
Less: Reclassification adjustment for net gains (losses) included in net income (loss), net of tax	0		0		0		0
Net foreign currency translation adjustment, net of tax	0		1		0		-7
Unrealized gains (losses) on investments:	'		'		'		'
Unrealized holding gains (losses) arising during the period, net of tax	4,978		-1,618		13,924		14,177
Less: Reclassification adjustment for net gains (losses) included in net (loss) income, net of tax	304	[1]	-1,189	[1]	879	[1]	7,680	[1]
Net unrealized gains (losses) on investments, net of tax	4,674		-429		13,045		6,497
Other comprehensive income (loss)	4,674		-428		13,045		6,490
Comprehensive (loss) income	($8,008)		$13,897		($220,309)		($267,676)
[1]	Included in net (losses) gains on investments on our condensed consolidated statements of operations.

Condensed_Consolidated_Stateme2

Condensed Consolidated Statements of Changes in Common Stockholders' Equity (Unaudited) (USD $)	Total	Common Stock	Treasury Stock	Additional Paid-in Capital	Retained Earnings (Deficit)	Accumulated Other Comprehensive Income [Member]	Total Stockholders Equity
In Thousands
Balance, at Dec. 31, 2011	'	$151	($892,052)	$1,966,565	$96,227	$11,400	$1,182,291
Net (loss) income	-274,166	'	'	'	-274,166	'	-274,166
Net foreign currency translation adjustment, net of tax	-7	'	'	'	'	-7	-7
Net unrealized gain on investments, net of tax	6,497	'	'	'	'	6,497	6,497
Repurchases of common stock under incentive plans	'	'	-42	0	'	'	-42
Issuance of common stock under benefit plans	'	0	'	468	'	'	468
Amortization of restricted stock	'	'	'	1,311	'	'	1,311
Stock-based compensation expense	'	'	'	-98	'	'	-98
Dividends declared	'	'	'	-1,001	'	'	-1,001
Balance, at Sep. 30, 2012	'	151	-892,094	1,967,245	-177,939	17,890	915,253
Balance, at Dec. 31, 2012	736,325	151	-892,094	1,967,414	-355,241	16,095	736,325
Net (loss) income	-233,354	'	'	'	-233,354	'	-233,354
Net foreign currency translation adjustment, net of tax	0	'	'	'	'	'	'
Net unrealized gain on investments, net of tax	13,045	'	'	'	'	13,045	13,045
Repurchases of common stock under incentive plans	'	'	-713	'	'	'	-713
Issuance of common stock - stock offering	'	39	'	299,371	'	'	299,410
Issuance of common stock under benefit plans	'	0	'	643	'	'	643
Amortization of restricted stock	'	'	'	3,883	'	'	3,883
Issuance of common stock under incentive plans	'	1	'	62	'	'	63
Issuance of convertible debt (See Note 10)	'	'	'	77,026	'	'	77,026
Stock-based compensation expense	'	'	'	-608	'	'	-608
Dividends declared	'	'	'	-1,200	'	'	-1,200
Balance, at Sep. 30, 2013	$894,520	$191	($892,807)	$2,346,591	($588,595)	$29,140	$894,520

Condensed_Consolidated_Stateme3

Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012
Cash flows used in operating activities	($567,642)	($441,769)
Cash flows from investing activities:	'	'
Proceeds from sales of fixed-maturity investments available for sale	19,124	54,456
Proceeds from sales of equity securities available for sale	0	31,235
Proceeds from sales of trading securities	1,155,310	5,008,003
Proceeds from redemptions of fixed-maturity investments available for sale	7,721	4,459
Proceeds from redemptions of fixed-maturity investments held to maturity	255	1,505
Proceeds from redemptions of equity securities available for sale	10,503	0
Purchases of fixed-maturity investments available for sale	-80,758	0
Purchases of trading securities	-507,034	-4,933,850
(Purchases)/sales and redemptions of short-term investments, net	-646,098	481,673
Sales (purchases) of other invested assets, net	15,311	-73,684
Proceeds from the sale of investment in affiliate	0	14,700
(Purchases)/sales of property and equipment, net	-3,677	118
Net cash (used in) provided by investing activities	-29,343	588,615
Cash flows from financing activities:	'	'
Dividends paid	-1,200	-1,001
Proceeds/payments related to issuance or exchange of debt, net	381,165	0
Redemption of long-term debt	-79,372	-153,261
Issuance of common stock	299,410	0
Excess tax benefits from stock-based awards	752	0
Net cash provided by (used in) financing activities	600,755	-154,262
Effect of exchange rate changes on cash	0	-11
Increase (decrease) in cash	3,770	-7,427
Cash, beginning of period	31,555	35,589
Cash, end of period	35,325	28,162
Supplemental disclosures of cash flow information:	'	'
Income taxes paid	2,414	1,530
Interest paid	$18,172	$24,531

Note_1_Condensed_Consolidated_

Note 1 - Condensed Consolidated Financial Statements - Basis of Presentation and Business Overview (Notes)	9 Months Ended
	Sep. 30, 2013
Condensed Consolidated Financial Statements Basis Of Presentation [Abstract]	'
Business Description and Basis of Presentation	'
	Condensed Consolidated Financial Statements—Basis of Presentation and Business Overview
	Our condensed consolidated financial statements include the accounts of Radian Group Inc. and its subsidiaries. We refer to Radian Group Inc. together with its consolidated subsidiaries as “Radian,” “we,” “us” or “our,” unless the context requires otherwise. We generally refer to Radian Group Inc. alone, without its consolidated subsidiaries, as “Radian Group.”
	Our condensed consolidated financial statements are prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”) and include the accounts of all wholly-owned subsidiaries. Companies in which we, or one of our subsidiaries, exercise significant influence (generally ownership interests ranging from 20% to 50%), are accounted for in accordance with the equity method of accounting. VIEs for which we are the primary beneficiary are consolidated, as described in Note 5. 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 United States (“U.S.”) Securities and Exchange Commission.
	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. These interim financial statements should be read in conjunction with the audited financial statements and notes thereto included in our Annual Report on Form 10-K for the year ended December 31, 2012 (the “2012 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. The year-end condensed balance sheet data was derived from audited financial statements, but does not include all disclosures required by GAAP.
	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 contingent assets and liabilities at the dates of the financial statements and 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.
	Basic net (loss) income per share is based on the weighted-average number of common shares outstanding, while diluted net (loss) income per share is based on the weighted-average number of common shares outstanding and common stock equivalents that would be issuable upon the exercise of stock options, other stock-based compensation arrangements, and the dilutive effect of our convertible debt. As a result of our net loss for the three and nine months ended September 30, 2013, 43,289,967 shares of our common stock equivalents issued under our stock-based compensation arrangements and convertible debt were not included in the calculation of diluted net loss per share as of such dates because they were anti-dilutive. For the three months ended September 30, 2012, 2,479,966 shares of our common stock equivalents issued under our stock-based compensation arrangements were not included in the calculation of diluted net income per share as of such date because they were anti-dilutive. As a result of our net loss for the nine months ended September 30, 2012, 5,890,581 shares of our common stock equivalents issued under our stock-based compensation arrangements were not included in the calculation of diluted net loss per share as of such date because they were anti-dilutive.
	In February 2013, the Financial Accounting Standards Board (“FASB”) issued an update to the accounting standard regarding comprehensive income. This update requires an entity to present, either on the face of the financial statements or as a separate disclosure, the changes in the accumulated balances for each component of other comprehensive income included in that separate component of equity. In addition to the presentation of changes in accumulated balances, an entity is required to present separately for each component of other comprehensive income, current period reclassifications out of accumulated other comprehensive income and other amounts of current period other comprehensive income. We adopted this update effective January 1, 2013, and in Note 11, we present the changes in the accumulated balances for each component of other comprehensive income as well as current period reclassifications out of accumulated other comprehensive income and other amounts of current period other comprehensive income.
	In July 2013, the FASB issued an update to the accounting standard regarding income taxes. This update provides guidance concerning the balance sheet presentation of an unrecognized tax benefit when a net operating loss carryforward or a tax credit carryforward (the “Carryforwards”) is available. This accounting standard requires an entity to net its liability related to unrecognized tax benefits against the related deferred tax assets for the Carryforwards. A gross presentation will be required when the Carryforwards are not available under the tax law of the applicable jurisdiction or when the Carryforwards would not be used by the entity to settle any additional income taxes resulting from disallowance of the uncertain tax position. This update is effective for fiscal years and interim periods within such years beginning after December 15, 2013. We are currently evaluating the impact this new guidance will have on our consolidated financial statements and disclosures.
	Business Overview
	We are a credit enhancement company with a primary strategic focus on domestic, residential mortgage insurance on first-lien loans (“first-liens”). We have two business segments—mortgage insurance and financial guaranty.
	Mortgage Insurance
	Our mortgage insurance segment provides credit-related insurance coverage, principally through private mortgage insurance, and risk management services to mortgage lending institutions. We provide these products and services mainly through our wholly-owned subsidiary, Radian Guaranty Inc. (“Radian Guaranty”). Private mortgage insurance protects mortgage lenders from all or a portion of default-related losses on residential mortgage loans made to home buyers who generally make down payments of less than 20% of the home’s purchase price. Private mortgage insurance also facilitates the sale of these mortgage loans in the secondary mortgage market, most of which are sold to Freddie Mac and Fannie Mae. We refer to Freddie Mac and Fannie Mae together as “Government Sponsored Enterprises” or “GSEs.”
	Our mortgage insurance segment offers primary mortgage insurance coverage on residential first-liens. At September 30, 2013, primary insurance on first-liens comprised approximately 95.7% of our $41.0 billion total direct risk in force (“RIF”). In the past, we also wrote pool insurance, which at September 30, 2013, comprised approximately 4.1% of our total direct RIF. Additionally, we offered other forms of credit enhancement on residential mortgage assets. These products included mortgage insurance on second-lien mortgages, credit enhancement on net interest margin securities (“NIMS”), and primary mortgage insurance on international mortgages (collectively, we refer to the risk associated with these transactions as “non-traditional”). We stopped writing non-traditional business in 2007, other than a small amount of international mortgage insurance, which we discontinued writing in 2008. Our non-traditional RIF was $115 million as of September 30, 2013, representing less than 1% of our total direct RIF.
	Financial Guaranty
	Our financial guaranty segment has provided direct insurance and reinsurance on credit-based risks through Radian Asset Assurance Inc. (“Radian Asset Assurance”). Radian Asset Assurance is a wholly-owned subsidiary of Radian Guaranty, which allows our financial guaranty business to serve as a source of capital for Radian Guaranty. We have provided financial guaranty credit protection in several forms, including through the issuance of financial guaranty policies, by insuring the obligations under one or more credit default swaps (“CDS”) and through the reinsurance of both types of obligations. In 2008, we ceased writing or assuming new financial guaranty business and since then, we have significantly reduced our financial guaranty operations. In addition, we have been proactive in reducing our financial guaranty exposures through transactions such as commutations, terminations, reinsurance and other settlements in order to mitigate uncertainty, maximize the ultimate capital available for our mortgage insurance business and accelerate access to that capital.
	Business Conditions
	As a seller of credit protection, our results are subject to macroeconomic conditions and specific events that impact the origination environment and the credit performance of our underlying insured assets. The downturn in the housing and related credit markets that began in 2007 had a significant negative impact on the operating environment and results of operations for both of our business segments. This negative operating environment was characterized by a decrease in mortgage originations, a broad decline in home prices, mortgage servicing and foreclosure delays, and ongoing deterioration in the credit performance of mortgage and other assets originated prior to 2009, together with macroeconomic factors such as high unemployment, limited economic growth and a lack of meaningful liquidity in many sectors of the capital markets. Our results of operations continue to be negatively impacted by the mortgage insurance we wrote during the poor underwriting years of 2005 through 2008 (we refer to this portion of our mortgage insurance portfolio, together with business written prior to 2005, as our “legacy portfolio”).
	In recent years, the operating environment for our businesses has shown signs of improvement. Although the U.S. economy and housing market remain weak compared to historical standards, home prices have been appreciating on a broad basis throughout the U.S., foreclosure activity has declined and the credit quality of recent mortgage market originations continues to be significantly better than the credit quality of our legacy portfolio. In addition, there are signs of a broader recovery in the U.S. economy, including importantly, a reduction in unemployment rates. As a consequence of these and other factors in 2012, we experienced improvement in our results of operations, driven primarily by a 22% decline in new primary mortgage insurance defaults. Our new primary mortgage insurance defaults have continued to decline in 2013, including a 19% decline in the first nine months of 2013 compared to the number of new primary defaults in the first nine months of 2012. Although uncertainty remains with respect to the ultimate losses we may experience in our legacy portfolio, as we continue to write a significant volume of new insurance on high-quality mortgages, our legacy portfolio has become a smaller percentage of our total portfolio, and we expect this trend to continue. Our legacy portfolio represented approximately 43% of our total primary mortgage insurance RIF at September 30, 2013 compared to approximately 55% at December 31, 2012.
	Currently, our business strategy primarily is focused on: (1) growing our mortgage insurance business by writing insurance on high-quality mortgages in the U.S.; (2) continuing to manage losses in our legacy mortgage insurance and financial guaranty portfolios; (3) continuing to reduce our legacy mortgage insurance and financial guaranty exposures; and (4) continuing to effectively manage our capital and liquidity positions.
	Our businesses also are significantly impacted by, and our future success may be affected by, legislative and regulatory developments impacting the housing finance industry. The GSEs are the primary beneficiaries of the majority of our mortgage insurance policies and the Federal Housing Administration remains our primary competitor outside of the private mortgage insurance industry. The GSEs’ current federal charters generally prohibit them from purchasing any mortgage with a loan amount that exceeds 80% of a home’s value, unless that mortgage is insured by a qualified insurer or the mortgage seller retains at least a 10% participation in the loan or agrees to repurchase the loan in the event of a default. As a result, high loan-to-value (“LTV”) mortgages purchased by the GSEs generally are insured with private mortgage insurance. Changes in the charters or business practices of the GSEs, including the pursuit of alternatives to private mortgage insurance as a condition to purchasing high LTV loans, could reduce the number of mortgages they purchase that are insured by us and consequently diminish our franchise value.
	Since 2011, there have been numerous legislative proposals and recommendations focused on reforming the U.S. housing finance industry, including proposals that are intended to wind down the GSEs or to otherwise limit or restrict the activities and businesses of the GSEs. As a result, the future structure of the residential housing finance system, as well as the impact of any such changes on our business, remain uncertain. Although we believe that traditional private mortgage insurance will continue to play an important role in any future housing finance structure, it is possible that new federal legislation could reduce the level of private mortgage insurance coverage used by the GSEs as credit enhancement, or even eliminate the requirement altogether, which would reduce our available market and could adversely affect our mortgage insurance business and our franchise value. In addition, the mortgage origination market and private mortgage insurers could be adversely impacted by regulatory requirements being developed under the Dodd-Frank Wall Street Reform and Consumer Protection Act (the “Dodd-Frank Act”).
	Capital Preservation and Liquidity Management Initiatives
	Since 2008, we have engaged in a number of strategic actions and initiatives in response to the negative economic and market conditions impacting our businesses. As a result of our strategic actions and an improving operating environment, we believe we are positioned to return to long-term profitability.
	Thus far in 2013, we have made further progress toward our objectives and in support of our business strategy, including by taking the following actions:
	•	Radian Asset Assurance continued to proactively reduce its financial guaranty portfolio through a series of risk commutations, transaction settlements and terminations, and continued to provide capital support to Radian Guaranty.
	-	In January 2013, $6.7 million of statutory contingency reserves were released due to the commutation of the remaining $822.2 million net par reinsured by Radian Asset Assurance from Financial Guaranty Insurance Company (the “FGIC Commutation”), including substantially all of our exposure to general obligation bonds issued by the City of Detroit;
	-	In February 2013, the New York State Department of Financial Services approved the release of an additional $61.1 million of statutory contingency reserves resulting from the reduction in Radian Asset Assurance’s net par outstanding;
	-	During the first nine months of 2013, in our financial guaranty business, four of our CDS counterparties exercised their termination rights with respect to nine collateralized debt obligations (“CDOs”) that we insured, and we agreed to the commutation of an additional CDO with another CDS counterparty (collectively, the “2013 CDO Terminations”), which reduced our net par outstanding by $3.4 billion in the aggregate; and
	-	In July 2013, Radian Asset Assurance paid an ordinary dividend of $36 million to Radian Guaranty.
	•	During the first nine months of 2013, Radian Group exchanged $195.5 million of its outstanding 5.375% Senior Notes due June 2015 for a new series of 9.000% Senior Notes due June 2017 in order to improve its debt maturity profile. See Note 10 for further information.
	•	In March 2013, Radian Group issued $400 million principal amount of 2.250% convertible unsecured senior notes due March 2019 (the “2019 Convertible Senior Notes”) and received net proceeds of approximately $389.8 million. See Note 10 for further information.
	•	In March 2013, Radian Group sold 39.1 million shares of common stock at a public offering price of $8.00 per share and received net proceeds of approximately $299.4 million.
	•	In August 2013, Radian Guaranty entered into a Master Transaction Agreement with Freddie Mac (the “Freddie Mac Agreement”) related to a group of 25,760 first-lien mortgage loans guaranteed by Freddie Mac that were insured by Radian Guaranty and were in default as of December 31, 2011. The Freddie Mac Agreement caps Radian Guaranty’s total exposure on the entire population of loans subject to the agreement to $840 million. The maximum exposure of $840 million is comprised of $625 million of claim payments (consisting of $370 million of claims paid on this population of loans as of July 12, 2013 and $255 million paid at closing) and $215 million related to rescissions, denials, claim curtailments and cancellations (“Loss Mitigation Activity”) on these loans. See Notes 6 and 8 for additional information regarding this agreement.
	At September 30, 2013, Radian Group had immediately available unrestricted cash and liquid investments of $822.1 million. Approximately $119.5 million (approximately $75.5 million of which relates to payments we expect to make in the next 12 months) of future expected corporate expenses and interest payments have been accrued for and paid by certain subsidiaries to Radian Group as of September 30, 2013, and therefore, the total unrestricted cash and liquid investments held by Radian Group as of September 30, 2013 include these amounts. Net of these advances, our available holding company liquidity is $702.6 million. We expect to use a portion of our available liquidity to support Radian Guaranty’s capital position, including to continue to maintain Radian Guaranty’s risk-to-capital ratio at 20 to 1 or below. In 2013, we have made contributions of $230 million to Radian Guaranty, including $115 million in the third quarter of 2013.

Note_2_Segment_Reporting_Notes

Note 2 - Segment Reporting (Notes)	9 Months Ended
	Sep. 30, 2013
Segment Reporting [Abstract]	'
Segment Reporting Disclosure	'
	Segment Reporting
	Our mortgage insurance and financial guaranty segments are strategic business units that are managed separately. We allocate corporate income and expenses to our mortgage insurance and financial guaranty segments based on either an allocated percentage of time spent on each segment or internally allocated capital, which is based on the relative GAAP equity of each segment. We allocate corporate cash and investments to our segments based on internally allocated capital, which also is based on relative GAAP equity. The results for each segment for each reporting period can cause significant volatility in internally allocated capital based on relative GAAP equity, which can impact the allocations of income and expenses to our segments.
	Beginning with the first quarter of 2013, management determined that the allocation of our consolidated provision for taxes to the segments is no longer material to the evaluation of our business results. Therefore, financial information for our business segments is disclosed on a pretax basis because senior management uses pretax results in the allocation of resources and in assessing the performance of the segments.
	Summarized financial information concerning our segments, as of and for the periods indicated, are as follows:
		Three Months Ended						Nine Months Ended September 30,
		September 30,
	(In thousands)	2013			2012			2013			2012
	Mortgage Insurance
	Net premiums written—insurance	$	250,799		$	209,890		$	719,244		$	589,261
	Net premiums earned—insurance	$	200,120		$	178,685		$	581,064		$	522,899
	Net investment income	14,868			14,758			45,236			50,377
	Net (losses) gains on investments	(4,380		)	43,379			(91,003		)	102,219
	Change in fair value of derivative instruments	—			(1		)	—			(32		)
	Net losses on other financial instruments	(168		)	(1,960		)	(1,971		)	(2,627		)
	Other income	1,250			1,280			5,121			3,928
	Total revenues	211,690			236,141			538,447			676,764
	Provision for losses	152,012			171,805			420,378			614,612
	Change in PDR	(2,325		)	966			(1,703		)	1,505
	Policy acquisition costs	5,839			10,126			24,072			26,662
	Other operating expenses	59,590			40,250			176,665			107,787
	Interest expense	4,447			1,910			10,820			5,355
	Total expenses	219,563			225,057			630,232			755,921
	Pretax (loss) income	$	(7,873	)	$	11,084		$	(91,785	)	$	(79,157	)
	Cash and investments	$	2,790,050		$	3,192,341
	Deferred policy acquisition costs	29,158			39,148
	Total assets	3,238,224			3,651,849
	Unearned premiums	535,420			333,144
	Reserve for losses and LAE	2,314,785			3,046,706
	VIE debt	11,109			9,448
	Derivative liabilities	—			—
	New Insurance Written (“NIW”) (in millions)	$	13,720		$	10,598		$	38,003		$	25,398
		Three Months Ended						Nine Months Ended September 30,
		September 30,
	(In thousands)	2013			2012			2013			2012
	Financial Guaranty
	Net premiums written—insurance	$	43		$	(613	)	$	(9,988	)	$	(120,374	)
	Net premiums earned—insurance	$	11,864		$	12,278		$	36,632		$	22,208
	Net investment income	11,864			10,877			35,984			40,848
	Net (losses) gains on investments	(2,752		)	41,280			(51,888		)	76,318
	Change in fair value of derivative instruments	10,778			(41,055		)	(70,357		)	(146,905		)
	Net gains (losses) on other financial instruments	1,070			1,220			(1,614		)	(77,827		)
	Gain on sale of affiliate	—			—			—			7,708
	Other income	64			48			198			235
	Total revenues	32,888			24,648			(51,045		)	(77,415		)
	Provision for losses	5,162			4,547			9,146			38,762
	Policy acquisition costs	2,119			2,801			11,087			25,116
	Other operating expenses	11,384			10,179			35,390			32,989
	Interest expense	15,123			10,610			44,051			33,894
	Total expenses	33,788			28,137			99,674			130,761
	Equity in net income (loss) of affiliates	—			—			1			(13		)
	Pretax loss	$	(900	)	$	(3,489	)	$	(150,718	)	$	(208,189	)
	Cash and investments	$	2,293,586		$	2,099,454
	Deferred policy acquisition costs	39,303			52,123
	Total assets	2,520,349			2,389,508
	Unearned premiums	216,167			281,311
	Reserve for losses and LAE	32,094			72,891
	VIE debt	93,109			100,203
	Derivative liabilities	344,870			267,323
	A reconciliation of segment pretax (loss) income to consolidated net (loss) income is as follows:
		Three Months Ended						Nine Months Ended September 30,
		September 30,
	(In thousands)	2013			2012			2013			2012
	Mortgage Insurance pretax (loss) income	$	(7,873	)	$	11,084		$	(91,785	)	$	(79,157	)
Financial Guaranty pretax loss	(900		)	(3,489		)	(150,718		)	(208,189		)
Income tax provision (benefit)	3,909			(6,730		)	(9,149		)	(13,180		)
Consolidated net (loss) income	$	(12,682	)	$	14,325		$	(233,354	)	$	(274,166	)

Note_3_Derivative_Instruments_

Note 3 - Derivative Instruments (Notes)	9 Months Ended
	Sep. 30, 2013
Derivative Instruments and Hedging Activities Disclosure [Abstract]	'
Derivative Instruments and Hedging Activities Disclosure	'
	Derivative Instruments
	We provide a significant portion of our credit protection within our financial guaranty segment in the form of CDS. In many of our CDS transactions, primarily our corporate CDOs, we generally are required to make payments to our counterparty above a specified level of subordination, upon the occurrence of credit events related to the borrowings or bankruptcy of obligors contained within pools of corporate obligations or, in the case of pools of mortgage or other asset-backed obligations, upon the occurrence of credit events related to the specific obligations in the pool. When we provide a CDS as credit protection on a specific obligation, we generally guarantee the full and timely payment of principal and interest when due on such obligation. These derivatives have various maturity dates, but the majority of the net par outstanding of our remaining insured CDS transactions, including all of our corporate CDOs, mature within five years.
	The following table sets forth our gross unrealized gains and gross unrealized losses on derivative assets and liabilities as of the dates indicated. Certain contracts are in an asset position because the net present value of the contractual premium we receive exceeds the net present value of our estimate of the expected future premiums that a financial guarantor of similar credit quality to us would charge to provide the same credit protection, assuming a transfer of our obligation to such financial guarantor as of the measurement date.
	(In thousands)	September 30,				December 31,
		2013				2012
	Balance Sheets
	Derivative assets:
	Financial Guaranty credit derivative assets	$	7,311			$	12,024
	NIMS related and other	13,533				1,585
	Total derivative assets	20,844				13,609
	Derivative liabilities:
	Financial Guaranty credit derivative liabilities	276,830				196,406
	Financial Guaranty VIE derivative liabilities	68,040				70,467
	Total derivative liabilities	344,870				266,873
	Total derivative liabilities, net	$	324,026			$	253,264
	The notional value of our derivative contracts at September 30, 2013 and December 31, 2012 was $14.2 billion and $19.2 billion, respectively.
	The components of the gains (losses) included in the change in fair value of derivative instruments are as follows:
		Three Months Ended								Nine Months Ended September 30,
		September 30,
	(In thousands)	2013				2012				2013			2012
	Statements of Operations
	Net premiums earned—derivatives	$	4,170			$	7,169			$	14,019		$	23,041
	Financial Guaranty credit derivatives	9,198				(51,839		)		(86,233		)	(171,219		)
	Financial Guaranty VIE derivatives	(4,026		)		3,616				513			1,253
	NIMS related and other	1,436				(2		)		1,344			(12		)
	Change in fair value of derivative instruments	$	10,778			$	(41,056	)		$	(70,357	)	$	(146,937	)
	The valuation of derivative instruments may result in significant volatility from period to period in gains and losses as reported on our condensed consolidated statements of operations. Generally, these gains and losses result, in part, from changes in corporate credit or asset-backed spreads and changes in the market’s perception of the creditworthiness of any: (i) underlying corporate entities; (ii) the credit performance of the assets underlying asset-backed securities (“ABS”); or (iii) primary obligors of obligations for which we provide second-to-pay credit protection. Additionally, when determining the fair value of our liabilities, we are required to incorporate into the fair value of those liabilities an adjustment that reflects our own non-performance risk, and consequently, changes in the market’s perception of our non-performance risk can also result in gains and losses on our derivative instruments. Any incurred gains or losses (which include any claim payments) on our financial guaranty contracts that are accounted for as derivatives are recognized as a change in fair value of derivative instruments. Because our fair value determinations for derivative and other financial instruments are based on assumptions and estimates that are inherently subject to risk and uncertainty, our fair value amounts could vary significantly from period to period. See Note 4 for more information on the fair value of our derivative instruments.
	The following table shows selected information about our derivative contracts:
	($ in thousands)	September 30, 2013
		Number of			Par/				Total Net Asset/
		Contracts			Notional				(Liability)
					Exposure
	Product
	NIMS related and other (1)	2			$	—			$	13,533
	Corporate CDOs	23			9,103,298				2,286
	Non-Corporate CDOs and other derivative transactions:
	Trust Preferred Securities (“TruPs”)	13			1,032,996				(35,652		)
	CDOs of commercial mortgage-backed securities (“CMBS”)	4			1,831,000				(99,255		)
	Other:
	Structured finance	5			552,466				(82,133		)
	Public finance	22			1,312,117				(42,497		)
	Total Non-Corporate CDOs and other derivative transactions	44			4,728,579				(259,537		)
	Assumed financial guaranty credit derivatives:
	Structured finance	26			159,774				(11,765		)
	Public finance	5			93,638				(503		)
	Total Assumed	31			253,412				(12,268		)
	Financial Guaranty VIE derivative liabilities (2)	1			77,686				(68,040		)
	Grand Total	101			$	14,162,975			$	(324,026	)
	______________________
	-1	Represents NIMS derivative assets related to consolidated NIMS VIEs and other purchased derivatives for which we do not have loss exposure that exceeds our net asset amount.
	-2	Represents the fair value of a CDS included in a VIE that we have consolidated. See Note 5 for more information on this transaction, the underlying reference securities and our maximum exposure to loss from this consolidated financial guaranty transaction. The assets in the VIE represent the only funds available to pay the CDS counterparty for amounts due under the contract; therefore, the notional exposure presented for the CDS is limited to the current trust assets.

Note_4_Fair_Value_of_Financial

Note 4 - Fair Value of Financial Instruments (Notes)	9 Months Ended
	Sep. 30, 2013
Fair Value Disclosures [Abstract]	'
Fair Value Disclosures	'
	Fair Value of Financial Instruments
	Certain assets and liabilities are recorded at fair value. These include: available for sale securities, trading securities, VIE debt, derivative instruments, and certain other assets. All derivative instruments and contracts are recognized in our condensed consolidated balance sheets as either derivative assets or derivative liabilities. All changes in fair value of trading securities, VIE debt, derivative instruments, 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 (loss).
	Our estimated fair value measurements are intended to reflect the assumptions market participants would use in pricing an asset or liability based on the best information available. Assumptions include the risks inherent in a particular valuation technique (such as a pricing model) and the risks inherent in the inputs to the model. Changes in economic conditions and capital market conditions, including but not limited to, credit spread changes, benchmark interest rate changes, market volatility and changes in the value of underlying collateral or of any third-party guaranty or insurance, could cause actual results to differ materially from our estimated fair value measurements. We define fair value as the current amount that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. In the event that our investments or derivative contracts were sold, commuted, terminated or settled with a counterparty or transferred in a forced liquidation, the amounts received or paid may be materially different from those determined in accordance with the accounting standard regarding fair value measurements. Differences may also arise between our recorded fair value and the settlement or termination value with a counterparty based upon consideration of information that may not be available to another market participant. Those differences, which may be material, are recorded as realized gains/(losses) in our condensed consolidated statements of operations in the period in which the transaction occurs. There were no significant changes to our fair value methodologies during the nine months ended September 30, 2013.
	We established a fair value hierarchy by prioritizing the inputs to valuation techniques used to measure fair value. 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 three levels of the fair value hierarchy under this standard are described 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.
	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 Level II recurring and non-recurring fair value measurements in our audited annual financial statements as of December 31, 2012. For a complete understanding of those valuation techniques and inputs used as of September 30, 2013, these unaudited condensed consolidated financial statements should be read in conjunction with the audited annual financial statements and notes thereto included in our 2012 Form 10-K.
	The following is a list of those assets and liabilities that are measured at fair value by hierarchy level as of September 30, 2013:
	(In millions)		Level I				Level II				Level III				Total
	Assets and Liabilities at Fair Value
	Investment Portfolio:
	U.S. government and agency securities		$	874			$	416.9			$	—			$	1,290.90
	State and municipal obligations		—				617.3				18.4				635.7
	Money market instruments		548.1				—				—				548.1
	Corporate bonds and notes		—				1,104.50				—				1,104.50
	Residential mortgage-backed securities (“RMBS”)		—				603.6				—				603.6
	CMBS		—				294.8				—				294.8
	Other ABS		—				203.2				1				204.2
	Hybrid securities		—				0.4				—				0.4
	Equity securities (1)		116.7				93.2				0.4				210.3
	Other investments (2)		—				2.5				80.2				82.7
	Total Investments at Fair Value (3)		1,538.80				3,336.40				100				4,975.20
	Derivative assets		—				12				8.9				20.9
	Other assets (4)		—				—				93.2				93.2
	Total Assets at Fair Value		$	1,538.80			$	3,348.40			$	202.1			$	5,089.30
	Derivative liabilities		$	—			$	—			$	344.9			$	344.9
	VIE debt (5)		—				—				104.2				104.2
	Total Liabilities at Fair Value		$	—			$	—			$	449.1			$	449.1
	______________________
	-1	Comprising broadly diversified domestic equity mutual funds included within Level I and various preferred and common stocks invested across numerous companies and industries included within Levels II and III.
	-2	Comprising TruPs ($0.9 million) and short-term certificates of deposit (“CDs”) ($1.6 million) included within Level II, and lottery annuities ($0.5 million) and a guaranteed investment contract held by a consolidated VIE ($79.7 million) within Level III.
	-3	Does not include fixed-maturities held to maturity ($0.4 million) and certain other invested assets ($49.6 million), primarily invested in limited partnerships, accounted for as cost-method investments and not measured at fair value.
	-4	Primarily comprising manufactured housing loan collateral related to two consolidated financial guaranty VIEs.
	-5	Comprising consolidated debt related to NIMS VIEs ($11.1 million) and amounts related to financial guaranty VIEs ($93.1 million).
	The following is a list of those assets and liabilities that are measured at fair value by hierarchy level as of December 31, 2012:
	(In millions)		Level I				Level II				Level III				Total
	Assets and Liabilities at Fair Value
	Investment Portfolio:
	U.S. government and agency securities		$	137.8			$	433.8			$	—			$	571.6
	State and municipal obligations		—				669				19				688
	Money market instruments		638				—				—				638
	Corporate bonds and notes		—				1,373.60				—				1,373.60
	RMBS		—				663.4				—				663.4
	CMBS		—				237.3				—				237.3
	Other ABS		—				252.4				1.7				254.1
	Foreign government securities		—				117.7				—				117.7
	Hybrid securities		—				211.9				—				211.9
	Equity securities (1)		98.9				166				1				265.9
	Other investments (2)		—				2.5				79				81.5
	Total Investments at Fair Value (3)		874.7				4,127.60				100.7				5,103.00
	Derivative assets		—				—				13.6				13.6
	Other assets (4)		—				—				99.2				99.2
	Total Assets at Fair Value		$	874.7			$	4,127.60			$	213.5			$	5,215.80
	Derivative liabilities		$	—			$	—			$	266.9			$	266.9
	VIE debt (5)		—				—				108.9				108.9
	Total Liabilities at Fair Value		$	—			$	—			$	375.8			$	375.8
	______________________
	-1	Comprising broadly diversified domestic equity mutual funds included within Level I and various preferred and common stocks invested across numerous companies and industries included within Levels II and III.
	-2	Comprising TruPs ($0.9 million) and short-term CDs ($1.6 million) included within Level II, and lottery annuities ($1.0 million) and a guaranteed investment contract held by a consolidated VIE ($78.0 million) within Level III.
	-3	Does not include fixed-maturities held to maturity ($0.7 million) and certain other invested assets ($48.7 million), primarily invested in limited partnerships, accounted for as cost-method investments and not measured at fair value.
	-4	Primarily comprising manufactured housing loan collateral related to two consolidated financial guaranty VIEs.
	-5	Comprising consolidated debt related to NIMS VIEs ($9.9 million) and amounts related to financial guaranty VIEs ($99.0 million).
When determining the fair value of our liabilities, we are required to incorporate into the fair value of those liabilities an adjustment that reflects our own non-performance risk. Our five-year CDS spread is an observable quantitative measure of our non-performance risk and is used by typical market participants to determine the likelihood of our default; the CDS spread actually used in the valuation of specific fair value liabilities is typically based on the remaining term of the insured obligation. As our CDS spread tightens or widens, it has the effect of increasing or decreasing, respectively, the fair value of our liabilities with a corresponding impact on our results of operations.
The following tables quantify the estimated impact of our non-performance risk on our derivative assets, derivative liabilities and net VIE liabilities (in aggregate by type) presented in our condensed consolidated balance sheets as of the dates indicated:
(In basis points)	September 30,			December 31,			September 30,			December 31,
	2013			2012			2012			2011
Radian Group’s five-year CDS spread	419			913			1,089			2,732
(In millions)	Fair Value Liability				Impact of Radian				Fair Value (Asset) Liability
	before Consideration				Non-Performance Risk September 30, 2013				Recorded
	of Radian Non-Performance Risk September 30, 2013								30-Sep-13
Product
Corporate CDOs	$	19.8			$	22.1			$	(2.3	)
Non-Corporate CDO-related (1)	493.1				221.3				271.8
NIMS-related (2)	12.1				2.6				9.5
Total	$	525			$	246			$	279
(In millions)	Fair Value Liability				Impact of Radian				Fair Value  (Asset) Liability
	before Consideration				Non-Performance Risk				Recorded
	of Radian Non-Performance Risk				December 31, 2012				31-Dec-12
	December 31, 2012
Product
Corporate CDOs	$	98.8			$	101.6			$	(2.8	)
Non-Corporate CDO-related (1)	696.6				509.3				187.3
NIMS-related (2)	13				4.7				8.3
Total	$	808.4			$	615.6			$	192.8
_____________________
-1	Includes the net fair value liability recorded within derivative assets and derivative liabilities, but does not include the net fair value liability of derivative assets or derivative liabilities within our consolidated VIEs, as Radian Group’s credit spread has no impact on the financial instruments in these VIEs.
-2	Includes NIMS VIE debt and NIMS derivative assets.
Non-performance risk is commonly measured by default probability, with a credit spread tightening indicating a lesser probability of default. Radian Group’s five-year CDS spread at September 30, 2013 implied a market view that there is a 27.3% probability that Radian Group will default in the next five years, as compared to a 47.7% implied probability of default at December 31, 2012. The cumulative impact of our non-performance risk on our derivative assets, derivative liabilities and net VIE liabilities decreased by $369.6 million during the first nine months of 2013, as presented in the tables above.
The following is a rollforward of Level III assets and liabilities measured at fair value for the quarter ended September 30, 2013:
(In millions)	Beginning				Realized and				Purchases				Sales				Issuances		Settlements				Transfers Into				Ending Balance at September 30, 2013
	Balance at				Unrealized																		(Out of)
	1-Jul-13				Gains (Losses)																		Level III (2)
					Recorded
					in Earnings  (1)
Investments:
State and municipal obligations	$	19.4			$	0.4			$	—			$	—			$	—	$	1.4			$	—			$	18.4
Other ABS	1.2				—				—				—				—		0.2				—				1
Equity securities	0.4				—				—				—				—		—				—				0.4
Other investments	77.4				2.3				0.5				—				—		—				—				80.2
Total Level III Investments	98.4				2.7				0.5				—				—		1.6				—				100
NIMS derivative assets	1.6				—				—				—				—		—				—				1.6
Other assets	96				2.7				—				—				—		5.5				—				93.2
Total Level III Assets	$	196			$	5.4			$	0.5			$	—			$	—	$	7.1			$	—			$	194.8
Derivative liabilities, net	$	343.6			$	11.4			$	—			$	—			$	—	$	(5.3	)		$	—			$	337.5
VIE debt	106.8				(1.8		)		—				—				—		4.4				—				104.2
Total Level III Liabilities, net	$	450.4			$	9.6			$	—			$	—			$	—	$	(0.9	)		$	—			$	441.7
______________________
-1	Includes unrealized gains (losses) for the quarter ended September 30, 2013, relating to assets and liabilities still held at September 30, 2013 as follows: $2.3 million for investments, $0.5 million for other assets, $5.9 million for derivative liabilities and $(1.0) million for VIE debt.
-2	Transfers are recognized at the end of the period as the availability of market observed inputs change from period to period.
The following is a rollforward of Level III assets and liabilities measured at fair value for the nine months ended September 30, 2013:
(In millions)	Beginning				Realized and				Purchases				Sales				Issuances		Settlements				Transfers Into				Ending Balance at September 30, 2013
	Balance at				Unrealized																		(Out of)
	1-Jan-13				Gains (Losses)																		Level III (2)
					Recorded
					in Earnings  (1)
Investments:
State and municipal obligations	$	19			$	0.8			$	—			$	—			$	—	$	1.4			$	—			$	18.4
Corporate bonds and notes	—				(0.1		)		2.7				—				—		—				(2.6		)	-3	—
CMBS	—				—				3.1				3.1				—		—				—				—
Other ABS	1.7				—				—				—				—		0.7				—				1
Equity securities	1				—				—				0.6				—		—				—				0.4
Other investments	79				0.4				1.3				0.1				—		0.4				—				80.2
Total Level III Investments	100.7				1.1				7.1				3.8				—		2.5				(2.6		)		100
NIMS derivative assets	1.6				—				—				—				—		—				—				1.6
Other assets	99.2				11.1				—				—				—		17.1				—				93.2
Total Level III Assets	$	201.5			$	12.2			$	7.1			$	3.8			$	—	$	19.6			$	(2.6	)		$	194.8
Derivative liabilities, net	$	254.9			$	(69.7	)		$	—			$	—			$	—	$	(12.9	)		$	—			$	337.5
VIE debt	108.9				(9.0		)		—				—				—		13.7				—				104.2
Total Level III Liabilities, net	$	363.8			$	(78.7	)		$	—			$	—			$	—	$	0.8			$	—			$	441.7
______________________
-1	Includes unrealized gains (losses) for the nine months ended September 30, 2013, relating to assets and liabilities still held at September 30, 2013 as follows: $0.4 million for investments, $3.9 million for other assets, $(83.5) million for derivative liabilities and $(6.4) million for VIE debt.
-2	Transfers are recognized at the end of the period as the availability of market observed inputs change from period to period.
-3	During the period, pricing from a third-party pricing source became available that utilized observable inputs for individual instruments. As a result, these instruments were transferred out of Level III and into Level II.
The following is a rollforward of Level III assets and liabilities measured at fair value for the quarter ended September 30, 2012:
(In millions)	Balance at				Realized and				Purchases				Sales				Issuances		Settlements				Transfers Into				Ending
	1-Jul-12				Unrealized																		(Out of)				Balance at
					Gains (Losses)																		Level III (2)				30-Sep-12
					Recorded
					in Earnings  (1)
Investments:
State and municipal obligations	$	19.6			$	0.4			$	—			$	—			$	—	$	1.2			$	—			$	18.8
Other ABS	4.8				—				—				—				—		0.5				(4.3		)	-3	—
Equity securities	2				(0.4		)		—				0.1				—		—				0.1				1.6
Other investments	76.5				(0.6		)		0.9				0.1				—		—				—				76.7
Total Level III Investments	102.9				(0.6		)		0.9				0.2				—		1.7				(4.2		)		97.1
NIMS derivative assets	1.7				—				0.1				—				—		—				—				1.8
Other assets	100.7				6.1				—				—				—		6.2				—				100.6
Total Level III Assets	$	205.3			$	5.5			$	1			$	0.2			$	—	$	7.9			$	(4.2	)		$	199.5
Derivative liabilities, net	$	207.5			$	(41.0	)		$	—			$	—			$	—	$	(5.8	)		$	—			$	254.3
VIE debt	107.8				(6.8		)		—				—				—		4.9				—				109.7
Total Level III Liabilities, net	$	315.3			$	(47.8	)		$	—			$	—			$	—	$	(0.9	)		$	—			$	364
_______________________
-1	Includes unrealized gains (losses) for the quarter ended September 30, 2012, relating to assets and liabilities still held at September 30, 2012 as follows: $(1.1) million for investments, $3.5 million for other assets, $(48.0) million for derivative liabilities, and $(5.8) million for VIE debt.
-2	Transfers are recognized at the end of the period as the availability of market observed inputs change from period to period.
-3	During the period, pricing from a third-party pricing source became available that utilized observable inputs for individual instruments. As a result, these instruments were transferred out of Level III and into Level II.
The following is a rollforward of Level III assets and liabilities measured at fair value for the nine months ended September 30, 2012:
(In millions)	Balance at				Realized and				Purchases				Sales				Issuances		Settlements				Transfers Into				Ending
	1-Jan-12				Unrealized																		(Out of)				Balance at
					Gains (Losses)																		Level III (2)				30-Sep-12
					Recorded
					in Earnings  (1)
Investments:
State and municipal obligations	$	62.5			$	(3.6	)		$	—			$	—			$	—	$	12.3			$	(27.8	)	-3	$	18.8
RMBS	45.5				6.1				—				—				—		51.6				—				—
CMBS	35.4				(11.4		)		—				—				—		24				—				—
CDOs	5.5				0.8				—				—				—		6.3				—				—
Other ABS	2.9				0.8				5.2				—				—		4.6				(4.3		)	-3	—
Hybrid securities	4.8				0.1				0.1				4.9				—		—				(0.1		)	-3	—
Equity securities	0.8				0.1				—				0.1				—		—				0.8				1.6
Other investments	6.8				0.6				75.9				0.6				—		6				—				76.7
Total Level III Investments	164.2				(6.5		)		81.2				5.6				—		104.8				(31.4		)		97.1
NIMS derivative assets	1.6				—				0.2				—				—		—				—				1.8
Other assets	104				15.4				—				—				—		18.8				—				100.6
Total Level III Assets	$	269.8			$	8.9			$	81.4			$	5.6			$	—	$	123.6			$	(31.4	)		$	199.5
Derivative liabilities, net	$	110.6			$	(146.9	)		$	—			$	—			$	—	$	3.2			$	—			$	254.3
VIE debt	228.2				(111.2		)		—				—				—		229.7			-4	—				109.7
Total Level III Liabilities, net	$	338.8			$	(258.1	)		$	—			$	—			$	—	$	232.9			$	—			$	364
_______________________
-1	Includes unrealized gains (losses) for the nine months ended September 30, 2012, relating to assets and liabilities still held at September 30, 2012 as follows: $(0.1) million for investments, $7.3 million for other assets, $(188.3) million for derivative liabilities, and $(12.9) million for VIE debt.
-2	Transfers are recognized at the end of the period as the availability of market observed inputs change from period to period.
-3	During the period, pricing from a third-party pricing source became available that utilized observable inputs for individual instruments. As a result, these instruments were transferred out of Level III and into Level II.
-4	Primarily represents the settlement of our CDO of ABS.
For markets in which inputs are not observable or limited, we use significant judgment and assumptions that a typical market participant would use to evaluate the market price of an asset or liability. Given the level of judgment necessary, another market participant may derive a materially different estimate of fair value. These assets and liabilities are classified in Level III of our fair value hierarchy. For fair value measurements categorized within Level III of the fair value hierarchy, we use certain significant unobservable inputs in estimating fair value. Those inputs primarily relate to the probability of default, the expected loss upon default, and our own non-performance risk as it relates to our liabilities.
The following table summarizes the significant unobservable inputs used in our recurring Level III fair value measurements as of September 30, 2013:
(In millions)	Fair Value Net Asset (Liability) September 30, 2013 (1)				Valuation Technique		Unobservable Input		Range/ Weighted Average
Level III Assets/Liabilities:
State and municipal obligations	$	18.4			Discounted cash flow		Discount rate					8.4	%
							Expected loss					11.1	%
Other investments	79.7				Discounted cash flow		Discount rate					1.6	%
Corporate CDOs	2.3				Base correlation model		Radian correlation to corporate index					85	%
							Average credit spread		<0.1%		-	1.4	%
							Own credit spread (2)		1.4	%	-	5.3	%
NIMS derivatives	1.6				Discounted cash flow		NIMS credit spread					43.6	%
							Own credit spread (2)					1.4	%
CDOs of CMBS	(99.3		)		Discounted cash flow		Radian correlation to CMBS transaction index		72	%	-	85	%
							Own credit spread (2)		1.4	%	-	5.3	%
TruPs CDOs	(35.7		)		Discounted cash flow		Principal recovery					72	%
							Principal recovery (stressed)					62	%
							Probability of conditional liquidity payment		0.8	%	-	10	%
							Own credit spread (2)		1.4	%	-	5.3	%
TruPs - related VIE	(68.0		)		Discounted cash flow		Discount rate					13	%
Other non-corporate CDOs and derivative transactions	(136.9		)		Risk-based model		Average life (in years)		<1		-	20
							Own credit spread (2)		1.4	%	-	5.3	%
NIMS VIE	(11.1		)		Discounted cash flow		NIMS credit spread					43.6	%
							Own credit spread (2)		1.8	%	-	8.7	%
______________________
-1	Excludes certain assets and liabilities for which we do not develop quantitative unobservable inputs. The fair value estimates for these assets and liabilities are developed using third-party pricing information, generally without adjustment.
-2	Represents the range of Radian Group’s CDS spread that a typical market participant might use in the valuation analysis based on the remaining term of the investment.
The following table summarizes the significant unobservable inputs used in our recurring Level III fair value measurements as of December 31, 2012:
(In millions)	Fair Value Net Asset (Liability) December 31, 2012 (1)				Valuation Technique		Unobservable Input		Range/ Weighted Average
Level III Assets/Liabilities:
State and municipal obligations	$	19			Discounted cash flow		Discount rate					8.8	%
							Expected loss					19	%
Other investments	78				Discounted cash flow		Discount rate					1.9	%
Corporate CDOs	2.8				Base correlation model		Radian correlation to corporate index					85	%
							Average credit spread		<0.1%		-	2.7	%
							Own credit spread (2)		8	%	-	9.1	%
NIMS derivatives	1.6				Discounted cash flow		NIMS credit spread					44	%
							Own credit spread (2)					8.5	%
CDOs of CMBS	(74.7		)		Discounted cash flow		Radian correlation to CMBS transaction index		72	%	-	85	%
							Own credit spread (2)		8	%	-	9.1	%
TruPs CDOs	(11.1		)		Discounted cash flow		Principal recovery					65	%
							Principal recovery (stressed)					60	%
							Probability of conditional liquidity payment		0.8	%	-	36.7	%
							Own credit spread (2)		8	%	-	9.1	%
TruPs - related VIE	(70.4		)		Discounted cash flow		Discount rate					13.4	%
Other non-corporate CDOs and derivative transactions	(101.4		)		Risk-based model		Average life (in years)		<1		-	20
							Own credit spread (2)		8	%	-	9.1	%
NIMS VIE	(9.9		)		Discounted cash flow		NIMS credit spread					43.7	%
							Own credit spread (2)		8.5	%	-	10.9	%
______________________
-1	Excludes certain assets and liabilities for which we do not develop quantitative unobservable inputs. The fair value estimates for these assets and liabilities are developed using third-party pricing information, generally without adjustment.
-2	Represents the range of Radian Group’s CDS spread that a typical market participant might use in the valuation analysis based on the remaining term of the investment.
The significant unobservable inputs in the fair value measurement of our investment securities noted in the tables above include an interest rate used to discount the projected cash flows and an expected loss assumption. This expected loss assumption generally represents the principal shortfall we believe that a typical market participant would expect on our security as a result of the obligor’s failure to pay. In addition, our other investments include a guaranteed investment contract for which the counterparty’s non-performance risk is considered in the discount rate. Significant increases (decreases) in either the discount rates or loss estimates in isolation would result in a lower (higher) fair value measurement. Changes in these assumptions are independent and may move in either similar or opposite directions.
The significant unobservable inputs used in the fair value measurement of our derivative assets, derivative liabilities and VIE debt relate primarily to projected losses. In addition, when determining the fair value of our liabilities, we are required to incorporate into the fair value of those liabilities an adjustment that reflects our own non-performance risk, if applicable, as discussed below.
For our corporate CDOs, we estimate the correlation of the default probability between the corporate entities and Radian—the higher the correlation percentage, the higher the probability that both the corporate entities and Radian will default together. In addition, a widening of the average credit spread increases the expected loss for our transactions, and therefore, increases the related liability.
For our CDO of CMBS transactions, we use the CMBX index that most directly correlates to our transaction with respect to vintage and credit rating, and then we estimate losses by applying a correlation factor. Because we have exposure to more senior tranches, an increase in this factor generally increases the expected loss for our transactions, and therefore, increases our related liability.
For our TruPs CDOs, the performance of each underlying reference obligation is measured by a standard and distressed pricing, which indicates the expected principal recovery. An increase in the standard and stressed principal recovery decreases the loss severity of the transaction, and therefore, in isolation, decreases the related liability. For those transactions where we may be required to pay a “liquidity claim,” we also assign these transactions a probability that we will be required to pay such a claim, which generally would increase our related liability. See “Management’s Discussion and Analysis of Financial Condition and Results of Operations—Liquidity and Capital Resources—Financial Guaranty” for additional information regarding the potential payment of a liquidity claim.
For our TruPs-related VIE liabilities, the fair value is estimated using similar inputs as in the estimated fair value of our TruPs CDOs, except there is no non-performance risk adjustment, as the derivative liability is limited to the segregated assets already held by the VIE.
For our other non-corporate CDOs, we utilize the internal credit rating, average remaining life, and current par outstanding for each transaction to project both expected losses and an internally developed risk-based capital amount. An increase in the average remaining life typically increases the expected loss of the transactions, and therefore, increases our related liability. An upgrade (downgrade) in the internal credit rating typically decreases (increases) the expected loss of the transactions, and therefore, decreases (increases) our related liability.
For all fair value measurements where we project our non-performance risk, including VIE debt, we utilize a market observed credit spread for Radian, which we believe is the best available indicator of the market’s perception of our non-performance risk. In isolation, a widening (tightening) of this credit spread typically decreases (increases) our related liability. The assumption used to project our own non-performance risk is independent from the other unobservable inputs used in our fair value measurements. The net impact on our reported assets and liabilities from increases or decreases in our own credit spread and from increases or decreases in other unobservable inputs depends upon the magnitude and direction of the changes in each input; such changes may result in offsetting effects to our recorded fair value measurements, or they may result in directionally similar impacts, which may be material.
A financial instrument’s level within the fair value hierarchy is based on the lowest level of any input that is significant to the fair value measurement. At September 30, 2013, our total Level III assets were approximately 4.0% of total assets measured at fair value and total Level III liabilities accounted for 100% of total liabilities measured at fair value.
Other Fair Value Disclosure
The carrying value and estimated fair value of other selected assets and liabilities not carried at fair value on our condensed consolidated balance sheets were as follows as of the dates indicated:
	September 30, 2013								December 31, 2012
(In millions)	Carrying				Estimated				Carrying				Estimated
	Amount				Fair Value				Amount				Fair Value
Assets:
Fixed-maturities held to maturity	$	0.4			$	0.4		-1	$	0.7			$	0.7		-1
Other invested assets	49.6				54.2			-1	48.7				57.4			-1
Liabilities:
Long-term debt (3)	921.9				1,496.50			-1	663.6				704.8			-1
Non-derivative financial guaranty liabilities	165.8				234.6			-2	232.9				308.1			-2
______________________
-1	These estimated fair values would be classified in Level II of the fair value hierarchy.
-2	These estimated fair values would be classified in Level III of the fair value hierarchy.
-3	The carrying amount of long-term debt is net of the equity component of our convertible notes, which is accounted for under the accounting standard for convertible debt instruments that may be settled in cash upon conversion (including partial cash settlement). The fair value is estimated based on the quoted market prices for the same or similar issues. See Note 10 for further information.

Note_5_VIEs_Notes

Note 5 - VIEs (Notes)	9 Months Ended
	Sep. 30, 2013
VIEs [Abstract]	'
Variable Interest Entities	'
	VIEs
	Our interests in VIEs for which we are not the primary beneficiary are accounted for as insurance or reinsurance contracts or credit derivatives. For insurance and reinsurance contracts, we record reserves for losses and LAE, and for credit derivatives, we record cumulative changes in fair value as a derivative asset or liability.
	As of September 30, 2013, we are the primary beneficiary of our NIMS transactions and certain financial guaranty structured finance transactions. Our control rights in these VIEs, which we obtained due to an event of default or breach of a performance trigger as defined in the transaction, generally provide us with either a right to replace the VIE servicer or, in some cases, the right to direct the sale of the VIE assets. In those instances where we have determined that we are the primary beneficiary, we consolidate the assets and liabilities of the VIE. We have elected to carry the financial assets and financial liabilities of these VIEs at fair value. In certain instances, the operating results of the consolidated VIE may generate taxable income or loss. The following relates to our consolidated and unconsolidated VIEs.
	Financial Guaranty Insurance Contracts
	In continually assessing our involvement with VIEs, we consider certain events such as the VIE’s failure to meet certain contractual conditions, including performance tests and triggers, servicer termination events and events of default, that, should they occur, may provide us with additional control rights over the VIE for a limited number of our transactions. The occurrence of these events would cause us to reassess our initial determination that we are not the primary beneficiary of a VIE. In addition, changes to its governance structure that would allow us to direct the activities of a VIE or our acquisition of additional financial interests in the VIE, would also cause us to reassess our determination that we are not the primary beneficiary of a VIE. Many of our financial guaranty contracts provide us with substantial control rights over the activities of VIEs upon the occurrence of default or other performance triggers described above. Therefore, additional VIEs may be consolidated by us if these events were to occur. Prior to the occurrence of these contingent conditions, another party (typically the collateral manager, servicer or equity holder) involved with the transaction holds the power to manage the VIE’s assets and to impact the economic performance of the VIE, without our ability to control or direct such powers.
	In the second quarter of 2012, Radian Asset Assurance entered into a commutation with one of its derivative counterparties (the “Counterparty”) to commute credit protection through CDS on six directly insured TruPs CDO transactions, representing $699.0 million of net par outstanding at the time of the commutation (the “Terminated TruPs CDOs”). In consideration for this commutation, Radian Asset Assurance paid an amount, a significant portion of which (the “LPV Initial Capital”) was deposited with a limited purpose vehicle (an “LPV”) to cover the Counterparty’s potential future losses on the TruPs bonds underlying the Terminated TruPs CDOs (the “Terminated TruPs Bonds”).
	As a result of this transaction, we consolidated the LPV (a VIE) that was formed upon execution. Also as part of this transaction, the LPV entered into a CDS (the “Residual CDS”) with the Counterparty to provide for payments to the Counterparty for future losses relating to the Terminated TruPs Bonds. The LPV Initial Capital, together with investment earnings (collectively, the “LPV Capital”), represent the only funds available to pay the Counterparty for amounts due under the Residual CDS. Radian Asset Assurance has no further obligation for claims related to the Terminated TruPs CDOs. The Residual CDS terminates concurrently with the Terminated TruPs Bonds for which we had provided credit protection and provides for payment to the Counterparty substantially in accordance with the terms of our original CDS protection for the Terminated TruPs Bonds. In addition, pursuant to an agreement with the Counterparty, if any LPV Capital amount is remaining following the maturity of the Residual CDS, Radian Asset Assurance is entitled to these remaining funds.
	For GAAP accounting purposes, we evaluated the LPV to determine if we would be considered the primary beneficiary of this VIE. We have the obligation to absorb the majority of the VIE’s losses and the right to receive the majority of any remaining funds through our residual interest agreement. In addition, we have the ability to impact the activities of the VIE in certain limited ways that could impact the economic performance of this VIE. As a result of these obligations and rights, we concluded that we are the primary beneficiary of the VIE. The consolidated assets of the LPV primarily consist of a guaranteed investment contract that is presented within other invested assets, which would be used to settle any obligations of this VIE under the Residual CDS. The Residual CDS represents the liability of the VIE, for which the Counterparty does not have recourse to our general credit for this consolidated liability. The Residual CDS held by the LPV is carried at fair value and we have also elected to carry the investments at fair value.
	We also consolidate the assets and liabilities associated with two other financial guaranty structured finance transactions. In these transactions, we provide guarantees for VIEs that own manufactured housing loans. Prior to their consolidation, these transactions had been accounted for as insurance contracts. Due to the contractual provisions that allow us to replace and appoint the servicer who manages the collateral underlying the assets of the transactions, we concluded that we have the power to direct the activities of these VIEs. In addition, as the guarantor of certain classes of debt issued by these VIEs, we have the obligation to absorb losses that could be significant to these VIEs. The assets of these VIEs may only be used to settle the obligations of the VIEs, while due to the nature of our guarantees, creditors have recourse to our general credit as it relates to the VIE debt. However, due to the seniority of the bonds we insure in these transactions, we do not expect to incur a loss from our involvement with these two VIEs; as such, we did not have a net liability recorded for these transactions as of September 30, 2013 and do not expect to pay any losses.
	We had also previously consolidated the assets and liabilities associated with one CDO of ABS VIE that was commuted in the second quarter of 2012. The consolidated assets of this CDO of ABS VIE were accounted for as trading securities and represented assets to be used to settle the obligation of this VIE.
	The following tables provide a summary of our maximum exposure to losses, and the financial impact on our condensed consolidated balance sheets, our condensed consolidated statements of operations and our condensed consolidated statements of cash flows as of and for the periods indicated, as it relates to our consolidated and unconsolidated financial guaranty insurance contracts and credit derivative VIEs:
		Consolidated						Unconsolidated
	(In thousands)	September 30,			December 31, 2012			September 30,			December 31, 2012
		2013						2013
	Balance Sheet:
	Other invested assets	$	79,749		$	78,006		$	—		$	—
	Derivative assets	—			—			1,176			3,201
	Premiums receivable	—			—			2,290			2,859
	Other assets	93,375			99,337			—			—
	Unearned premiums	—			—			1,960			2,513
	Reserve for losses and LAE	—			—			13,977			14,376
	Derivative liabilities	68,040			70,467			259,261			175,781
	VIE debt—at fair value	93,109			98,983			—			—
	Accounts payable and accrued expenses	285			366			—			—
	Maximum exposure (1)	123,849			120,939			4,748,667			5,096,718
	______________________
	-1	The difference between the carrying amounts of the net asset/liability position and maximum exposure related to VIEs is primarily due to the difference between the face amount of the obligation and the recorded fair values, which include an adjustment for our non-performance risk, as applicable. For those VIEs that have recourse to our general credit, the maximum exposure is based on the net par amount of our insured obligation. For any VIEs that do not have recourse to our general credit, the maximum exposure is generally based on the recorded net assets of the VIE, as of the reporting date.
		Consolidated						Unconsolidated
		Nine Months Ended September 30,						Nine Months Ended September 30,
	(In thousands)	2013			2012			2013			2012
	Statement of Operations:
	Premiums earned	$	—		$	—		$	872		$	1,286
	Net investment income	1,338			2,903			—			—
	Net gain (loss) on investments	405			(3,128		)	—			—
	Change in fair value of derivative	513			1,253			(82,069		)	(166,404		)
	instruments—gain (loss)
	Net gain (loss) on other financial	3,377			(91,274		)	—			—
	instruments
	Provision for losses—(decrease) increase	—			—			(208		)	5,854
	Other operating expenses	1,469			1,802			—			—
	Net Cash Inflow (Outflow)	333			(134,600		)	4,133			(70,486		)
	NIMS VIEs
	Our control rights in our NIMS transactions, which we obtained due to an event of default or breach of a performance trigger as defined in the transaction, generally provide us with either a right to replace the VIE servicer or, in some cases, the right to direct the sale of the VIE assets. As the guarantor of either all or a significant portion of the debt issued by each NIMS VIE, we have the obligation to absorb losses that are significant to the VIEs. In those instances where we have determined that we are the primary beneficiary, we consolidate the assets and liabilities of the VIE. We have elected to carry the financial assets and financial liabilities of these VIEs at fair value.
	In total, our net cash inflow related to NIMS during 2013 has been primarily investment income on bonds held. We have two remaining NIMS transactions, which mature in December 2013 and May 2035, respectively. The following tables provide a summary of our maximum exposure to losses, and the financial impact on our condensed consolidated balance sheets, our condensed consolidated statements of operations and our condensed consolidated statements of cash flows as of and for the periods indicated, as it relates to our consolidated NIMS VIEs:
	(In thousands)	September 30,			December 31,
		2013			2012
	Balance Sheet:
	Derivative assets	$	1,577		$	1,585
	VIE debt—at fair value	11,109			9,875
	Maximum exposure (1)	14,061			14,061
	______________________
	-1	The difference between the carrying amounts of the net asset/liability position and maximum exposure related to VIEs is primarily due to the difference between the face amount of the obligation and the recorded fair values, which include an adjustment for our non-performance risk, as applicable.
		Nine Months Ended September 30,
	(In thousands)	2013			2012
	Statement of Operations:
	Net investment income	$	178		$	427
	Change in fair value of derivative instruments—gain	—			3
	Net loss on other financial instruments	(1,270		)	(4,500		)
	Net Cash Inflow	149			4,301

Note_6_Investments_Notes

Note 6 - Investments (Notes)	9 Months Ended
	Sep. 30, 2013
Investments [Abstract]	'
Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure	'
	Investments
	Securities within our investment portfolio determined to be “held to maturity” and “available for sale” consisted of the following as of the dates indicated:
		September 30, 2013
	(In thousands)	Amortized		Fair Value		Gross		Gross
		Cost				Unrealized		Unrealized
						Gains		Losses
	Fixed-maturities held to maturity:
	Bonds and notes:
	State and municipal obligations	$	428	$	421	$	—	$	7
		$	428	$	421	$	—	$	7
	Fixed-maturities available for sale:
	U.S. government and agency securities	$	3,465	$	3,714	$	249	$	—
	State and municipal obligations	12,309		11,792		22		539
	Corporate bonds and notes	7,463		7,493		457		427
	RMBS	74,187		75,491		1,304		—
	Other investments	395		422		27		—
		$	97,819	$	98,912	$	2,059	$	966
	Equity securities available for sale (1)	$	78,106	$	121,868	$	43,762	$	—
	Total debt and equity securities	$	176,353	$	221,201	$	45,821	$	973
	______________________
	-1	Comprising broadly diversified domestic equity mutual funds ($116.7 million fair value) and various preferred and common stocks invested across numerous companies and industries ($5.2 million fair value) that are carried at cost.
		December 31, 2012
	(In thousands)	Amortized		Fair Value		Gross		Gross
		Cost				Unrealized		Unrealized
						Gains		Losses
	Fixed-maturities held to maturity:
	Bonds and notes:
	State and municipal obligations	$	679	$	676	$	3	$	6
		$	679	$	676	$	3	$	6
	Fixed-maturities available for sale:
	U.S. government and agency securities	$	4,969	$	5,305	$	336	$	—
	State and municipal obligations	17,922		17,995		116		43
	Corporate bonds and notes	15,618		16,369		1,110		359
	RMBS	50		51		3		2
	Other investments	922		976		54		—
		$	39,481	$	40,696	$	1,619	$	404
	Equity securities available for sale (1)	$	88,260	$	112,139	$	23,879	$	—
	Total debt and equity securities	$	128,420	$	153,511	$	25,501	$	410
	______________________
	-1	Comprising broadly diversified domestic equity mutual funds ($98.9 million fair value) and various preferred and common stocks invested across numerous companies and industries ($13.2 million fair value) that are carried at cost.
	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,
		2013		2012
	Trading securities:
	U.S. government and agency securities	$	413,169	$	428,519
	State and municipal obligations	623,899		669,975
	Corporate bonds and notes	1,097,034		1,357,175
	RMBS	528,103		663,307
	CMBS	294,752		237,294
	Other ABS	204,187		254,102
	Foreign government securities (1)	—		117,686
	Hybrid securities	417		211,944
	Equity securities	88,435		153,722
	Other investments	938		898
	Total	$	3,250,934	$	4,094,622
	_______________________
	-1	As of September 30, 2013, there were no foreign government securities in our investment portfolio. We sold our investment in foreign government securities during the first quarter of 2013, as our market view of these investments changed, and their performance did not meet our expectations.
	For trading securities held at September 30, 2013 and December 31, 2012, we had net losses during 2013 and net gains during 2012 in the amounts of $144.6 million and $29.8 million, respectively.
	As part of the Freddie Mac Agreement, Radian Guaranty deposited $205 million into a collateral account, currently invested primarily in trading securities, to cover loss mitigation activity on the related loans. A portion of the funds deposited may be released to Radian Guaranty over time. See Note 8 for further information.
	The following tables show the gross unrealized losses and fair value of our securities deemed “available for sale” and “held to maturity,” aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position, as of the dates indicated:
	September 30, 2013:		Less Than 12 Months					12 Months or Greater						Total
	($ in thousands)
	Description of Securities		# of	Fair Value		Unrealized		# of		Fair Value		Unrealized		# of	Fair Value		Unrealized
	securities		Losses			securities		Losses				securities	Losses
State and municipal obligations		—	$	—	$	—	3		$	5,506	$	546	3	$	5,506	$	546
Corporate bonds and notes		—	—		—		2		2,976		427		2	2,976		427
Total		—	$	—	$	—	5		$	8,482	$	973	5	$	8,482	$	973
December 31, 2012:		Less Than 12 Months					12 Months or Greater						Total
($ in thousands)
Description of Securities		# of	Fair Value		Unrealized		# of		Fair Value		Unrealized		# of	Fair Value		Unrealized
		securities			Losses		securities				Losses		securities			Losses
State and municipal obligations		—	$	—	$	—	2		$	6,004	$	49	2	$	6,004	$	49
Corporate bonds and notes		—	—		—		6		5,329		359		6	5,329		359
RMBS		1	31		2		—		—		—		1	31		2
Total		1	$	31	$	2	8		$	11,333	$	408	9	$	11,364	$	410
During the first nine months of 2013 and 2012, there were no credit losses recognized in earnings.
Impairments of a security due to credit deterioration that result in a conclusion that the present value of cash flows expected to be collected will not be sufficient to recover the amortized cost basis of the security are considered other-than-temporary. Other declines in the fair value of a security (for example, due to interest rate changes, sector credit rating changes or company-specific rating changes) that result in a conclusion that the present value of cash flows expected to be collected will not be sufficient to recover the amortized cost basis of the security, also may serve as a basis to conclude that an other-than-temporary impairment has occurred. To the extent we determine that a security is deemed to be other-than-temporarily impaired, we recognize an impairment loss.
We hold securities in an unrealized loss position that we did not consider to be other-than-temporarily impaired as of September 30, 2013. For all investment categories, the unrealized losses of 12 months or greater duration as of September 30, 2013, were generally caused by interest rate or credit spread movements since the purchase date of such securities. As of September 30, 2013, we expected the present value of cash flows to be collected from these securities to be sufficient to recover the amortized cost basis of these securities. At September 30, 2013, 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 have the ability to hold the securities until recovery or maturity; therefore, we did not consider these investments to be other-than-temporarily impaired at September 30, 2013.
The contractual maturities of fixed-maturity investments are as follows:
	September 30, 2013
	Held to Maturity				Available for Sale
(In thousands)	Amortized		Fair		Amortized		Fair
	Cost		Value		Cost		Value
Due in one year or less (1)	$	—	$	—	$	3,483	$	3,137
Due after one year through five years (1)	120		120		5,249		5,496
Due after five years through ten years (1)	—		—		639		654
Due after ten years (1)	308		301		14,261		14,134
RMBS (2)	—		—		74,187		75,491
Total	$	428	$	421	$	97,819	$	98,912
______________________
-1	Actual maturities may differ as a result of calls before scheduled maturity.
-2	RMBS are shown separately given their varying maturity dates.

Note_7_Reinsurance_Notes

Note 7 - Reinsurance (Notes)	9 Months Ended
	Sep. 30, 2013
Reinsurance [Abstract]	'
Reinsurance	'
	Reinsurance
	In our mortgage insurance business, we use reinsurance as a risk management tool to reduce our net RIF in order to help manage Radian Guaranty’s regulatory risk-to-capital ratio. See Note 13 for information regarding statutory capital requirements for our insurance subsidiaries. We have primarily used reinsurance in our financial guaranty business to the extent necessary to comply with applicable single risk limits. However, in January 2012, as part of a transaction with one of our primary insurers (discussed below), we ceded $1.8 billion of our financial guaranty direct public finance risk as a means of reducing our net par outstanding. Although the use of reinsurance does not discharge an insurer from its primary liability to the insured, the reinsuring company assumes the related liability under these arrangements. Included in other assets are unearned premiums on risk that we have ceded of $75.8 million and $64.5 million at September 30, 2013 and December 31, 2012, respectively.
	The effect of assumed or ceded reinsurance in our mortgage insurance and financial guaranty businesses on net premiums written and earned is as follows:
		Three Months Ended						Nine Months Ended September 30,
		September 30,
	(In thousands)	2013			2012			2013			2012
	Net premiums written-insurance:
	Direct	268,886			232,086			784,180			650,188
	Assumed	(126		)	(918		)	(10,729		)	(89,434		)
	Ceded	(17,918		)	(21,891		)	(64,195		)	(91,867		)
	Net premiums written-insurance	$	250,842		$	209,277		$	709,256		$	468,887
	Net premiums earned-insurance:
	Direct	$	228,162		$	201,988		$	660,687		$	590,016
	Assumed	1,943			3,408			10,573			(5,573		)
	Ceded	(18,121		)	(14,433		)	(53,564		)	(39,336		)
	Net premiums earned-insurance	$	211,984		$	190,963		$	617,696		$	545,107
	In January 2013, pursuant to the FGIC Commutation, we commuted $822.2 million of financial guaranty net par outstanding, which included substantially all of our exposure to general obligation bonds issued by the City of Detroit. This transaction reduced our net premiums written by $12.6 million and reduced our net premiums earned by $2.5 million in the first quarter of 2013.
	In January 2012, Radian Asset Assurance entered into a transaction with subsidiaries of Assured Guaranty Ltd. (collectively “Assured”) that included the commutation of $13.8 billion of financial guaranty net par outstanding that Radian Asset Assurance had reinsured from Assured, and the cession of $1.8 billion of direct public finance business to Assured. This transaction reduced our net premiums written by $119.8 million and reduced our net premiums earned by $22.2 million in the first quarter of 2012.
	During the second quarter of 2012, Radian Guaranty entered into a quota share reinsurance (“QSR”) agreement with a third-party reinsurance provider (the “Initial QSR Transaction”). Through the Initial QSR Transaction, Radian Guaranty agreed to cede to the third party reinsurance provider 20% of its NIW beginning with the business written in the fourth quarter of 2011. As of September 30, 2013, RIF ceded under the Initial QSR Transaction was $1.4 billion. Radian Guaranty has the ability, at its option, to recapture two-thirds of the reinsurance ceded as part of this transaction on December 31, 2014, which would result in Radian Guaranty reassuming the related RIF in exchange for a payment of a predefined commutation amount from the reinsurer. We are no longer ceding NIW under the Initial QSR Transaction.
	The following table shows the amounts related to the Initial QSR Transaction as of the periods indicated:
		Three Months Ended						Nine Months Ended September 30,
		September 30,
	(In thousands)	2013			2012			2013			2012
	Ceded premiums written	$	5,551		$	16,378		$	17,573		$	41,855
	Ceded premiums earned	7,216			5,291			22,711			8,389
	Ceding commissions written	1,388			4,095			4,393			10,464
	In the fourth quarter of 2012, Radian Guaranty and the same third-party reinsurance provider entered into a second QSR agreement (the “Second QSR Transaction”). The limitation on ceded risk was $750 million initially and the parties have the ability to mutually increase the amount of ceded risk up to a maximum of $2 billion. As of September 30, 2013, RIF ceded under the Second QSR Transaction was $1.2 billion. The agreed upon terms also provide that, effective as of December 31, 2015, Radian Guaranty will have the ability, at its option (the “Commutation Option”), to recapture one-half of the reinsurance ceded with respect to conventional GSE loans, which would result in Radian Guaranty reassuming the related RIF in exchange for a payment of a predefined commutation amount from the reinsurer. Pursuant to the original terms of the Second QSR Transaction:
	(i)	Radian Guaranty agreed to cede to the reinsurer 20% of all premiums and losses incurred with respect to conventional GSE loans and will initially receive a 35% ceding commission; provided, that if we do not exercise our Commutation Option, the ceding commission will be reduced to 30% for the portion of the ceded RIF that was subject to the Commutation Option; and
	(ii)	Radian Guaranty has the ability to cede 100% of all premiums and losses incurred with respect to non-conventional portfolio loans and will receive a 25% ceding commission. We have not ceded any risk on non-conventional portfolio loans.
	Effective April 1, 2013, Radian Guaranty amended the original terms of the Second QSR Transaction to reduce the percentage of all premiums and losses incurred on new business that will be ceded to the reinsurer under this reinsurance agreement on a prospective basis from 20% to 5% with respect to NIW on conventional GSE loans.
	The following table shows the amounts related to the Second QSR Transaction as of the periods indicated:
	(In thousands)	Three Months Ended September 30, 2013			Nine Months Ended September 30, 2013
	Ceded premiums written	$	8,233		$	32,253
	Ceded premiums earned	5,099			12,220
	Ceding commissions written	2,882			11,289

Note_8_Losses_and_LAE_Notes

Note 8 - Losses and LAE (Notes)	9 Months Ended
	Sep. 30, 2013
Insurance Loss Reserves [Abstract]	'
Liability for Future Policy Benefits and Unpaid Claims Disclosure	'
	Losses and LAE
	Our reserve for losses and LAE, as of the dates indicated, consisted of:
	(In thousands)	September 30,			December 31,
		2013			2012
	Mortgage insurance reserves	$	2,314,785		$	3,083,608
	Financial guaranty reserves	32,094			66,328
	Total reserve for losses and LAE	$	2,346,879		$	3,149,936
	The following table presents information relating to our mortgage insurance reserves for losses, including our estimate of defaults incurred but not reported (“IBNR”), and LAE as of the dates indicated:
		Three Months Ended						Nine Months Ended September 30,
		September 30,
	(In thousands)	2013			2012			2013			2012
	Mortgage Insurance
	Balance at beginning of period	$	2,690,861		$	3,155,343		$	3,083,608		$	3,247,900
	Less reinsurance recoverables (1)	58,427			97,845			83,238			151,569
	Balance at beginning of period, net of reinsurance recoverables	2,632,434			3,057,498			3,000,370			3,096,331
	Add losses and LAE incurred in respect of default notices reported and unreported in:
	Current year (2)	140,015			248,806			477,155			686,080
	Prior years	11,997			(77,001		)	(56,777		)	(71,468		)
	Total incurred	152,012			171,805			420,378			614,612
	Deduct paid claims and LAE related to:
	Current year (2)	21,334			2,912			21,483			3,185
	Prior years	498,002			269,486			1,134,155			750,853
	Total paid	519,336			272,398			1,155,638			754,038
	Balance at end of period, net of reinsurance recoverables	2,265,110			2,956,905			2,265,110			2,956,905
	Add reinsurance recoverables (1)	49,675			89,801			49,675			89,801
	Balance at end of period	$	2,314,785		$	3,046,706		$	2,314,785		$	3,046,706
	_________________________
	-1	Related to ceded losses on captive reinsurance transactions, capital markets reinsurance transactions (“Smart Home”) and QSR transactions.
	-2	Related to underlying defaulted loans with a most recent date of default notice 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.
	The ultimate amount and timing of future losses will depend, in part, on general economic conditions and other factors, including the status of credit markets, home prices and unemployment rates, all of which are difficult to predict and beyond our control. Our mortgage insurance incurred losses are driven primarily by new mortgage insurance defaults and any changes in the assumptions used to determine our loss reserves on new or existing defaults.
	Our mortgage insurance loss reserves declined in the third quarter of 2013 primarily due to a decrease in our total inventory of defaults as a result of the Freddie Mac Agreement. Additionally, the volume of paid claims, defaulted loans that cured (“cures”), and net insurance rescissions and claim denials outpaced new default notices received during the quarter, which also contributed to the decrease in defaults. Total paid claims increased for the three and nine months ended September 30, 2013 from the comparable periods in 2012, mainly as a result of the claim payment associated with the Freddie Mac Agreement and an improvement in the efficiency of our claim review process. In prior periods, our process for reviewing claims received for non-compliance with our insurance policies lengthened the claim resolution period. Delays created by foreclosure slowdowns, servicer issues, and loan modification programs also had lengthened the claim resolution process in prior periods. We cannot be certain of the ultimate impact of these delays on our business or results of operations.
	In August 2013, Radian Guaranty entered into the Freddie Mac Agreement related to a group of 25,760 first-lien mortgage loans guaranteed by Freddie Mac that were insured by Radian Guaranty and were in default as of December 31, 2011. The Freddie Mac Agreement provides for the future treatment of the loans subject to the terms of the agreement including claim payments, loss mitigation activity and insurance coverage, and eliminates Radian Guaranty’s claim exposure on 9,756 loans that were delinquent and 4,586 loans that were re-performing as of July 31, 2013. The remaining loans in the original population as of December 31, 2011 were paid off, rescinded, denied or resulted in a paid claim prior to July 31, 2013. The Freddie Mac Agreement caps Radian Guaranty’s total exposure on the entire population of loans subject to the agreement to $840 million, and Radian Guaranty has no additional exposure to claims on these loans. The maximum exposure of $840 million is comprised of $625 million of claim payments (consisting of $370 million of claims paid on this population as of July 12, 2013 and $255 million paid at closing) and $215 million related to Loss Mitigation Activity on the loans. At the closing, Radian Guaranty deposited $205 million into a collateral account to cover future Loss Mitigation Activity on the loans. The amount deposited in the collateral account represents $215 million, less $10 million of Loss Mitigation Activity that had become final in accordance with the Freddie Mac Agreement prior to the date the collateral account was established. The collateral account consists of investment securities and remains on our consolidated balance sheets as a result of the rights that Radian Guaranty has with respect to those funds, as further described below. Subject to certain conditions in the Freddie Mac Agreement, amounts in the collateral account will be released to Radian Guaranty over time to the extent that Loss Mitigation Activity becomes final in accordance with the terms of the Freddie Mac Agreement. From the time the collateral account was established through September 30, 2013, approximately $2.4 million of additional Loss Mitigation Activity had become final in accordance with the Freddie Mac Agreement and $137.3 million of submitted claims had been rescinded, denied, curtailed or cancelled, but were not considered final in accordance with the Freddie Mac Agreement. If the amount of Loss Mitigation Activity that becomes final in accordance with the Freddie Mac Agreement after the collateral account was established does not accumulate to $205 million prior to termination of the Freddie Mac Agreement, then any remaining funds will be paid to Freddie Mac. Radian Guaranty will continue to administer all claims submitted with respect to these loans in accordance with the applicable insurance policy for these loans and in a manner consistent with its normal claims handling practices. The Freddie Mac Agreement will terminate upon the earliest to occur of: (1) August 29, 2017; (2) any time after August 29, 2015 if the amounts remaining in the collateral account are reduced to $0; or (3) any time after August 29, 2015 if Radian Guaranty exercises its early termination option to conclude the transactions under the Freddie Mac Agreement, by paying to Freddie Mac an amount equal to the initial collateral amount less the amount of Loss Mitigation Activity that had then become final under the terms of the agreement.
	For the three and nine months ended September 30, 2013, reserves established for new default notices reported in the current year were the primary driver of our incurred losses. The adverse development in prior year incurred losses for the three and nine months ended September 30, 2013 includes the approximate $22 million initial loss related to the Freddie Mac Agreement. This initial loss is expected to be fully offset by a reduction of incurred losses in future periods. This future reduction of incurred losses is expected to result from the elimination of exposure to re-performing loans covered by the transaction that we expect to re-default in the future and ultimately become claims. Favorable reserve development on other default notices reported in prior years partially mitigated the impact from new defaults and the Freddie Mac Agreement, as the benefit to prior year defaults from higher claim curtailments and cures was more than previously estimated. In particular, claim curtailments due to servicer noncompliance with our insurance policies and servicing guidelines increased to approximately $16 million and $42 million, respectively, for the three and nine months ended September 30, 2013, compared to approximately $6 million and $15 million, respectively, for the three and nine months ended September 30, 2012.
	For the three and nine months ended September 30, 2012, reserves established for new default notices were the primary driver of total incurred losses. Partially offsetting those effects in 2012 was positive reserve development on default notices reported in prior years, primarily relating to higher actual insurance rescissions and claim denials than previously assumed in our loss reserve estimates.
	In addition, our results for the nine months ended September 30, 2012 were impacted by a $43.6 million decrease in our estimated reinsurance recoverable from our Smart Home transactions. This decrease was a result of trends in lower claims paid and higher insurance rescissions and claim denials than were previously estimated to occur by the scheduled maturity dates of our Smart Home transactions.
	In recent years, our primary defaulted inventory experienced an increase in its weighted average age, as measured by the number of monthly payments missed. Because we apply higher estimated “default to claim rates” (rate at which defaulted loans are expected to result in claim) on our more aged delinquent loans, this has resulted in a higher reserve per default. In addition, our estimated rates of insurance rescissions and claim denials have declined in recent periods. Our aggregate weighted average net default to claim rate assumption for our primary loans, which is net of estimated denials, rescissions and reinstatements, used in estimating our reserve for losses was approximately 50% at September 30, 2013, compared to 49% at December 31, 2012. As of September 30, 2013, our aggregate weighted average default to claim rate estimate on our primary loans, net of denials, rescissions and reinstatements and excluding pending claims, was 41%, and ranged from 22% for insured loans that had missed two to three monthly payments to 49% for such loans that had missed 12 or more monthly payments.
	Our reserve for losses also includes the impact of our estimate of future rescissions and denials, which remain elevated compared to levels experienced before 2009. The elevated levels of our rate of insurance rescissions and claim denials have reduced our paid losses and have resulted in a significant reduction in our loss reserves. Our estimate of net future rescissions and denials reduced our loss reserves as of September 30, 2013 and December 31, 2012 by approximately $291 million and $455 million, respectively. Conversely, our estimate of future reinstatements of previously rescinded policies and denied claims increased our loss reserves as of September 30, 2013 and December 31, 2012 by approximately $286 million and $303 million, respectively, primarily reflected in our IBNR reserve estimate as further described below. The amount of estimated rescissions and denials 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 and denials 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. Although we expect the amount of estimated rescissions and denials embedded within our reserve for losses to remain elevated as compared to levels before 2009, we expect them to continue to decrease over time, as the defaults related to our legacy portfolio decline as a proportion of our total default portfolio and as we realize the results through actual rescissions and denials, or the commutations of insured loans. In the event that we experience a more rapid than expected decrease in the level of future insurance rescissions and claim denials from the current levels, it could have a material adverse effect on our paid losses and loss reserves.
	Our reported rescission and denial activity in any given period is subject to challenge by our lender and servicer customers. We expect that a portion of previously denied claims will be resubmitted with the required documentation and ultimately paid; therefore, we have considered this expectation in developing our IBNR reserve estimate. Our IBNR reserve estimate was $268 million and $323 million at September 30, 2013 and December 31, 2012, respectively. As of September 30, 2013, our IBNR reserve estimate of $268 million includes an estimate of future reinstatements of previously denied claims and rescinded policies of $173 million and $78 million, respectively. These reserves relate to $381 million of claims that were denied within the preceding 12 months and $450 million of policies that were rescinded within the preceding 24 months, as well as additional denials and rescissions that were denied or rescinded in earlier periods but remain the subject of discussion with certain of our lender and servicer customers.
	The following table illustrates the amount of first-lien claims submitted to us for payment that were rescinded or denied, for the periods indicated, net of any reinstatements of previously rescinded policies or denied claims within each period:
		Three Months Ended						Nine Months Ended September 30,
		September 30,
	(In millions)	2013			2012			2013			2012
	Rescissions	$	21.6		$	95.8		$	56.5		$	193.7
	Denials	4.1			131.9			131.3			537.1
	Total first-lien claims submitted for payment that were rescinded or denied (1)	$	25.7		$	227.7		$	187.8		$	730.8
	______________________
	-1	Includes an amount related to a small number of submitted claims that were subsequently withdrawn by the insured.
	Generally, we estimate our claim liability related to the potential future reinstatement of previously rescinded policies and denied claims by estimating an initial gross reinstatement rate at the time of denial or rescission, which then declines over a 12 or 24 month time frame. As of September 30, 2013, for previously denied claims, this initial gross reinstatement assumption begins at approximately 60% and declines to 0% after 12 months, while for previously rescinded policies, the initial assumed reinstatement rate begins at approximately 20% and declines to 0% after 24 months. Our IBNR reserve estimate also includes the projected potential impact from future estimated rescissions on reinstated denials and the estimated impact of future claim curtailments on reinstated denials and rescissions. Therefore, at any particular point in time, our IBNR reserve estimate with respect to previously rescinded policies or denied claims is affected not only by our initial reinstatement assumption, but also by the length of time since the denial or rescission, our estimated likelihood of such reinstatements resulting in a paid claim, the expected claim curtailments on such paid claims, as well as the potential outcome of any discussions with our lender and servicer customers regarding such rescissions or denials.
	We also accrue for the premiums that we expect to refund to our lender customers in connection with our estimated insurance rescission activity. Our accrued liability for such refunds, which is included within accounts payable and accrued expenses on our condensed consolidated balance sheets, was $24 million and $48 million as of September 30, 2013 and December 31, 2012, respectively.
	Rescission and denial rates since 2011 have been affected by an increase in the number of claims received that we review for potential violations of our insurance policies. The following table shows the cumulative rescission/denial rates in our total first-lien portfolio, net of both actual and expected reinstatements, as of September 30, 2013, with respect to claims received in each quarter indicated below:
	Claim		Projected Net Cumulative Rescission/Denial Rate for Each Quarter (1)	Percentage of
	Received			Total Claims Resolved (2)
	Quarter
	Q1 2011		20.40%	99%
	Q2 2011		25.40%	99%
	Q3 2011		30.90%	99%
	Q4 2011		27.00%	99%
	Q1 2012		23.50%	98%
	Q2 2012		20.70%	97%
	Q3 2012		17.80%	89%
	Q4 2012		16.00%	78%
	Q1 2013		16.40%	57%
	______________________
-1	Projected net cumulative rescission/denial rates represent the ratio of claims rescinded or denied to claims received (by claim count). Rescissions and denials are net of actual reinstatements, plus our current estimate for expected reinstatements of previously rescinded policies or denied claims (excluding certain potential reinstatements we are in the process of discussing with servicers). These projected amounts represent the cumulative rates for each quarter as of September 30, 2013. Until all of the claims received during the periods shown have been internally resolved, the rescission/denial rates for each quarter will be subject to change; these rates also will remain subject to change based on differences between estimated and actual reinstatements of previously rescinded policies or denied claims.
-2	The percentage of claims resolved for each quarter presented in the table above represents the number of claims that have been internally resolved as a percentage of the total number of claims received for that specific quarter. A claim is considered internally resolved when it is either paid or it is concluded that the claim should be denied or rescinded, though such denials and rescissions could be challenged and potentially reinstated or overturned. For the second and third quarters of 2013, a significant portion of claims received for those quarters have not been internally resolved; therefore, we do not believe the projected net cumulative rescission/denial rates for those periods are presently meaningful.
We considered the sensitivity of first-lien loss reserve estimates at September 30, 2013 by assessing the potential changes resulting from a parallel shift in severity and default to claim rate. For example, assuming all other factors remain constant, for every one percentage point change in primary claim severity (which we estimate to be approximately 28% of unpaid principal balance at September 30, 2013), we estimated that our loss reserves would change by approximately $63 million at September 30, 2013. For every one percentage point change in pool claim severity (which we estimate to be approximately 45% of unpaid principal balance at September 30, 2013), we estimated that our loss reserves would change by approximately $3 million at September 30, 2013. For every one percentage point change in our net overall default to claim rate (which we estimate to be approximately 47% at September 30, 2013), we estimated an approximate $39 million change in our loss reserves at September 30, 2013.
Estimating the loss reserves in both our mortgage insurance and financial guaranty business segments involves significant reliance upon assumptions and estimates with regard to the likelihood, magnitude and timing of each potential loss, including the impact of future reinstatements of previously rescinded policies and denied claims. The models, assumptions and estimates we use to establish loss reserves may prove to be inaccurate, especially during an extended economic downturn or a period of extreme market volatility and uncertainty, such as we experienced during the past several years. Our reserves could be impacted in the future if the U.S. economy fails to fully recover from the most recent recession and prolonged economic downturn, including if high unemployment rates continue, or if there is uncertainty in the housing, municipal, foreign sovereign and related credit markets, which could increase our mortgage insurance or financial guaranty losses beyond our existing expectations. As such, we cannot be certain that our reserve estimate will be adequate to cover ultimate losses on incurred defaults.
See Note 9 for information regarding our financial guaranty net claim liabilities.

Note_9_Financial_Guaranty_Insu

Note 9 - Financial Guaranty Insurance Contracts (Notes)	9 Months Ended
	Sep. 30, 2013
Financial Guaranty Insurance Contracts [Abstract]	'
Financial Guarantee Insurance Contracts	'
	Financial Guaranty Insurance Contracts
	The following table includes information as of September 30, 2013 regarding our financial guaranty claim liabilities on non-derivative transactions, segregated by the surveillance categories that we use in monitoring the risks related to these contracts:
		Surveillance Categories
	($ in thousands)	Performing			Special			Intensified			Case			Total
					Mention			Surveillance			Reserve
	Number of policies	6			106			72			85			269
	Remaining weighted-average contract period (in years)	22			18			20			19			19
	Insured contractual payments outstanding:
	Principal	$	1,721		$	707,897		$	622,049		$	112,393		$	1,444,060
	Interest	156			382,859			322,434			30,267			735,716
	Total	$	1,877		$	1,090,756		$	944,483		$	142,660		$	2,179,776
	Gross claim liability	$	1		$	20,305		$	206,597		$	34,773		$	261,676
	Less:
	Gross potential recoveries	—			6,744			254,152			55,265			316,161
	Discount, net	—			699			(97,106		)	(1,955		)	(98,362		)
	Net claim liability/(asset) (prior to reduction for unearned premium)	$	1		$	12,862		$	49,551		$	(18,537	)	$	43,877
	Unearned premium revenue	$	5		$	15,298		$	10,724		$	—		$	26,027
	Net claim liability/(asset) reported in the balance sheet	$	—		$	6,398		$	42,677		$	(18,537	)	$	30,538
	Reinsurance recoverables	$	—		$	—		$	—		$	—		$	—
	A net claim liability is established for a performing credit if there is evidence that credit deterioration has occurred and the expected loss on the credit exceeds the unearned premium revenue for the contract based on the present value of the expected net cash inflows and outflows. Included in accounts and notes receivable and unearned premiums on our condensed consolidated balance sheets are the present values of premiums receivable and unearned premiums that are received on an installment basis. The premiums receivable is net of commissions on assumed reinsurance business. The present values of premiums receivable and unearned premiums that are received on an installment basis were $26.0 million and $28.5 million, respectively, as of September 30, 2013, and $28.9 million and $33.6 million, respectively, as of December 31, 2012.
	The accretion of these balances is included in either premiums written and premiums earned (for premiums receivable) or policy acquisition costs (for commissions) on our condensed consolidated statements of operations. The accretion included in premiums earned for the three months ended September 30, 2013 and 2012 was $0.2 million for both periods, and for the nine months ended September 30, 2013 and 2012 was $0.7 million and $0.8 million, respectively. There was an immaterial amount of accretion recorded in policy acquisition costs for the three and nine months ended September 30, 2013 and 2012.
	The nominal (non-discounted) premiums, net of commissions that are expected to be collected on financial guaranty contracts with installment premiums, included in premiums receivable as of September 30, 2013, was $32.7 million and is expected to decrease over time as the portfolio runs off. The activity related to the net present value of premiums receivable during the three and nine months ended September 30, 2013 and 2012 was not material. The weighted-average risk-free rate used to discount the premiums receivable and premiums to be collected was 2.6% at September 30, 2013.
	Premiums earned were affected by the following for the periods indicated:
		Three Months Ended						Nine Months Ended September 30,
		September 30,
	(In thousands)	2013			2012			2013			2012
	Refundings	$	6,979		$	7,322		$	22,020		$	26,029
	Recaptures/commutations	—			—			(2,447		)	(16,269		)
	Unearned premium acceleration upon establishment of case reserves	—			669			69			669
	Reinsurance agreements	—			—			—			(5,995		)
	Foreign exchange revaluation, gross of commissions	112			616			(975		)	(153		)
	Adjustments to installment premiums, gross of commissions	(155		)	(2,390		)	2,527			(2,273		)
	Total adjustment to premiums earned	$	6,936		$	6,217		$	21,194		$	2,008
	The following table shows the expected contractual premium revenue from our existing financial guaranty portfolio, assuming no prepayments (“refundings”) of any financial guaranty obligations, as of September 30, 2013:
	(In thousands)	Ending Net			Unearned			Accretion			Total
		Unearned			Premium						Premium
		Premiums			Amortization						Revenue
	Fourth Quarter 2013	$	192,191		$	8,414		$	210		$	8,624
	2014	168,705			23,486			794			24,280
	2015	152,202			16,503			727			17,230
	2016	138,307			13,895			683			14,578
	2017	125,425			12,882			624			13,506
	2013-2017	125,425			75,180			3,038			78,218
	2018-2022	71,950			53,475			2,381			55,856
	2023-2027	35,983			35,967			1,485			37,452
	2028-2032	15,223			20,760			924			21,684
	After 2032	—			15,223			1,075			16,298
	Total	$	—		$	200,605		$	8,903		$	209,508
	The following table shows the significant components of changes in our financial guaranty claim liability for the three and nine months ended September 30, 2013 and 2012, excluding reserves related to our trade credit reinsurance and surety business of $1.6 million and $2.3 million at September 30, 2013 and September 30, 2012, respectively, which are excluded from the accounting standard regarding accounting for financial guaranty insurance contracts by insurance enterprises.
		Three Months Ended						Nine Months Ended September 30,
		September 30,
	(In thousands)	2013			2012			2013			2012
	Claim liability at beginning of period	$	23,611		$	92,645		$	64,291		$	60,550
	Incurred losses and LAE:
	(Decrease) increase in gross claim liability	(28,486		)	37,559			(56,477		)	199,257
	Decrease (increase) in gross potential recoveries	8,896			(69,624		)	35,339			(261,339		)
	Decrease in discount	24,075			36,312			30,208			102,457
	Decrease (increase) in unearned premiums	926			225			213			(1,683		)
	Incurred losses and LAE	5,411			4,472			9,283			38,692
	Deduct paid losses and LAE:
	Current years	70			(334		)	103			—
	Prior years	(1,586		)	26,843			42,933			28,634
	Paid losses and LAE:	(1,516		)	26,509			43,036			28,634
Claim liability at end of period	$	30,538		$	70,608		$	30,538		$	70,608
Components of incurred losses and LAE:
Claim liability established in current period	$	866		$	8,750		$	1,249		$	8,801
Changes in existing claim liabilities	4,545			(4,278		)	8,034			29,891
Total incurred losses and LAE	$	5,411		$	4,472		$	9,283		$	38,692
Components of decrease in discount:
Decrease in discount related to net claim liabilities established in current period	$	268		$	36,094		$	103		$	101,776
Decrease in discount related to existing net claim liabilities	23,807			218			30,105			681
Total decrease in discount	$	24,075		$	36,312		$	30,208		$	102,457
Paid losses during the first nine months of 2013 include $41.6 million related to the FGIC Commutation. Paid losses in the third quarter of 2013 reflect recoveries received during the quarter related to previously paid claims. We paid $23.5 million to settle our obligations related to our exposure to insured sovereign indebtedness of Greece in the third quarter of 2012.
In the first nine months of 2012, we significantly increased our estimated gross claim liability associated with a project finance credit with net par outstanding of $70 million at September 30, 2012, based primarily on refinancing risk upon the maturity or scheduled principal amortization of the insured obligations beginning in 2017. Revenues for the project serve as collateral for our insured risk, and we have also projected a full recovery of the gross claim over time, which resulted in both an increase in our potential recovery and discount amounts.
Our financial guaranty loss reserve estimate involves significant judgment surrounding the estimated probability of the likelihood, magnitude and timing of each potential loss based upon different loss scenarios. The probabilities, assumptions and estimates we use to establish our financial guaranty loss reserves are subject to uncertainties, particularly given the current economic and credit environments, including uncertainties regarding our public finance municipal exposures and international sovereign risk exposures. We continue to monitor the uncertainties surrounding our portfolio, and it is possible that the actual losses paid could differ materially from our present estimates.
The weighted-average risk-free rates used to discount the gross claim liability and gross potential recoveries were as follows as of the dates indicated:
30-Sep-13	3	%
31-Dec-12	2	%
30-Sep-12	1.94	%
31-Dec-11	2.8	%

Note_10_LongTerm_Debt_Notes

Note 10 - Long-Term Debt (Notes)	9 Months Ended
	Sep. 30, 2013
Long-term Debt, Unclassified [Abstract]	'
Long-term Debt	'
	Long-Term Debt
	The carrying value of our long-term debt at September 30, 2013 and December 31, 2012 was as follows:
	(In thousands)		September 30,			December 31,
			2013			2012
	5.63%	Senior Notes due 2013	$	—		$	79,449
	5.38%	Senior Notes due 2015	54,479			249,868
	9.00%	Senior Notes due 2017	191,376			—
	3.00%	Convertible Senior Notes due 2017 (1)	348,735			334,254
	2.25%	Convertible Senior Notes due 2019 (2)	327,337			—
		Total long-term debt	$	921,927		$	663,571
	______________________
	-1	The principal amount of these notes is $450 million.
	-2	The principal amount of these notes is $400 million.
	During the first nine months of 2013, we exchanged $195.5 million of our 5.375% Senior Notes due June 2015 (the “Old Notes”) for a new series of 9.000% Senior Notes due June 2017 (the “New Notes”) for purposes of improving our debt maturity profile. These transactions, which are accounted for as extinguishments of debt, resulted in a loss of $4.0 million, primarily as a result of the requirement to record the New Notes at fair value. Both the Old Notes and the New Notes have covenants customary for securities of this nature, including covenants related to the payments of the notes, reports, compliance certificates, and the modification of covenants. Additionally, the indentures governing the Old Notes and New Notes include covenants restricting us from encumbering the capital stock of a designated subsidiary (as defined in the respective indentures for the notes) or disposing of any capital stock of any designated subsidiary unless either all of the stock is disposed of or we retain more than 80% of the stock.
	2019 Convertible Senior Notes
	In March 2013, we issued $400 million principal amount of the 2019 Convertible Senior Notes and received net proceeds of approximately $389.8 million. Interest is payable semi-annually on March 1 and September 1 of each year, commencing on September 1, 2013. The 2019 Convertible Senior Notes have covenants customary for securities of this nature, including covenants related to payments of the notes, reports, compliance certificates and the modification of covenants.
	At any time on or after March 8, 2016, we may redeem all or part of the notes, but only if the last reported sale price of our common stock for 20 or more trading days in a period of 30 consecutive trading days ending on, and including, the trading day prior to the date we provide notice of redemption exceeds 130% of the conversion price in effect on each such trading day. The redemption price will be equal to 100% of the unpaid principal amount of the notes to be redeemed, plus accrued and unpaid interest to, but excluding, the redemption date (unless the redemption date falls after a regular record date but on or prior to the immediately succeeding interest payment date, in which case we will pay the full amount of accrued and unpaid interest to the holder of record as of the close of business on such regular record date, and the redemption price will be equal to 100% of the principal amount of notes to be redeemed).
	Holders of the notes will be able to convert the notes, at their option, before the close of business on the business day immediately preceding December 1, 2018, only under the following circumstances:
	1	During any calendar quarter commencing after March 31, 2013 (and only during such calendar quarter), if the last reported sale price of our common stock for each of at least 20 trading days (whether or not consecutive) during the 30 consecutive trading days ending on, and including, the last trading day of the immediately preceding calendar quarter, is greater than or equal to 130% of the applicable conversion price on each applicable trading day;
	2	During the five business day period after any five consecutive trading day period in which the trading price per $1,000 principal amount of the notes (for each trading day during that five day measurement period) was less than 98% of the product of the last reported sale price of the common stock and the applicable conversion rate on such trading day;
	3	Any time prior to the close of business on the business day prior to the redemption date if we call the notes for redemption; or
	4	Upon the occurrence of specified corporate events as described in the indenture for the notes.
	Upon a conversion, we will satisfy our conversion obligation by paying or delivering, as the case may be, cash, shares of our common stock or a combination of cash and shares of our common stock, at our election. The conversion rate initially is 94.3396 shares of our common stock per $1,000 principal amount of notes (corresponding to an initial conversion price of approximately $10.60 per share of common stock). The conversion rate is subject to adjustment in certain events, but will not be adjusted for accrued and unpaid interest, if any. In addition, following certain corporate events, we will, under certain circumstances, increase the conversion rate for a holder who elects to convert its notes in connection with that corporate event.
	This transaction is accounted for under the accounting standard for convertible debt instruments that may be settled in cash upon conversion (including partial cash settlement) and specifies that issuers of such instruments should separately account for the liability and equity components in a manner that reflects the entity’s nonconvertible debt borrowing rate when the interest cost is recognized in subsequent periods. Our convertible notes fall within the scope of this standard due to our ability to elect to repay the convertible notes in cash.
	We have determined that the embedded conversion option in the convertible notes is not required to be separately accounted for as a derivative under the accounting standard for derivatives and hedging. The carrying amount of the liability component was calculated by measuring the fair value of a similar liability that does not have an associated equity component. The carrying amount of the equity component representing the embedded conversion option was determined by deducting the fair value of the liability component from the initial proceeds ascribed to the convertible notes as a whole. The excess of the principal amount of the liability component over its carrying amount is amortized as a component of interest expense over the expected life of a similar liability that does not have an associated equity component using the effective interest method. The equity component is not remeasured as long as it continues to meet the conditions for equity classification as prescribed in the accounting standard for derivative financial instruments indexed to, and potentially settled in, an entity’s own common stock and the accounting standard for determining whether an instrument (or an embedded feature) is indexed to an entity’s own stock.
	Issuance and transaction costs incurred at the time of the issuance of the convertible notes are allocated to the liability and equity components in proportion to the allocation of proceeds and accounted for as debt issuance costs and equity issuance costs, respectively. The convertible notes are reflected on our condensed consolidated balance sheets as follows:
	(In thousands)	September 30,
		2013
	Liability component:
	Principal	$	400,000
	Less: debt discount, net (1)	(72,663		)
	Net carrying amount	$	327,337
	Equity component (net of tax impact) (2) (3)	$	77,026
	______________________
	-1	Included within long-term debt and is being amortized over the life of the convertible notes.
	-2	Included within additional paid-in capital, net of related issuance costs.
	-3	A full valuation allowance has been recorded against the deferred income tax impact.
	The following table sets forth total interest expense recognized related to the convertible notes for the periods indicated:
	(In thousands)	Three Months Ended September 30, 2013			Nine Months Ended September 30, 2013
	Contractual interest expense	$	2,250		$	5,175
	Amortization of debt issuance costs	311			711
	Amortization of debt discount	2,801			6,378
	Total interest expense	$	5,362		$	12,264
	Effective interest rate of the liability component	6.25		%	6.25		%
	If we fail to comply with applicable debt covenants, it could result in a default under our long-term debt and accelerate our obligation to repay our outstanding debt. Regulatory action that results in the appointment of a receiver for one or more of our significant insurance subsidiaries could constitute an event of default under our long-term debt.

Note_11_Accumulated_Other_Comp

Note 11 - Accumulated Other Comprehensive Income (Notes)	9 Months Ended
	Sep. 30, 2013
Schedule of Accumulated Other Comprehensive Income [Abstract]	'
Comprehensive Income (Loss) Note	'
	Accumulated Other Comprehensive Income
	The following table shows the rollforward of accumulated other comprehensive income for the periods indicated:
			Three Months Ended September 30, 2013									Nine Months Ended September 30, 2013
	(In thousands)		Before tax			Tax effect			Net of tax			Before tax			Tax effect			Net of tax
	Balance at beginning of period		$	37,450		$	12,984		$	24,466		$	24,904		$	8,809		$	16,095
	Other comprehensive income:
	Unrealized gains on investments:
	Unrealized holding gains arising during the period		7,659			2,681			4,978			21,422			7,498			13,924
	Less: Reclassification adjustment for net gains included in net loss (1)		444			140			304			1,661			782			879
	Net unrealized gains on investments		7,215			2,541			4,674			19,761			6,716			13,045
	Other comprehensive income		7,215			2,541			4,674			19,761			6,716			13,045
	Balance at end of period		$	44,665		$	15,525		$	29,140		$	44,665		$	15,525		$	29,140
			Three Months Ended September 30, 2012									Nine Months Ended September 30, 2012
	(In thousands)		Before tax			Tax effect			Net of tax			Before tax			Tax effect			Net of tax
	Balance at beginning of period		$	22,682		$	4,364		$	18,318		$	12,039		$	639		$	11,400
	Other comprehensive income (loss):
	Foreign currency translation adjustments:
	Unrealized foreign currency translation adjustment		1			—			1			(11		)	(4		)	(7		)
	Less: Reclassification adjustment		—			—			—			—			—			—
	Net foreign currency translation adjustments		1			—			1			(11		)	(4		)	(7		)
	Unrealized gains (losses) on investments:
	Unrealized holding (losses) gains arising during the period		(2,489		)	(871		)	(1,618		)	21,811			7,634			14,177
	Less: Reclassification adjustment for net (losses) gains included in net loss (1)		(6,100		)	(4,911		)	(1,189		)	7,545			(135		)	7,680
	Net unrealized gains (losses) on investments		3,611			4,040			(429		)	14,266			7,769			6,497
	Other comprehensive income (loss)		3,612			4,040			(428		)	14,255			7,765			6,490
	Balance at end of period		$	26,294		$	8,404		$	17,890		$	26,294		$	8,404		$	17,890
	______________________
	-1	Included in net (losses) gains on investments on our condensed consolidated statements of operations.

Note_12_Income_Taxes_Notes

Note 12 - Income Taxes (Notes)	9 Months Ended
	Sep. 30, 2013
Income Tax Disclosure [Abstract]	'
Income Tax Disclosure	'
	Income Taxes
	We provide for income taxes in accordance with the provisions of the accounting standard regarding accounting for income taxes. As required under this standard, our deferred tax assets and liabilities are recognized under the balance sheet method, which recognizes the future tax effect of temporary differences between the amounts recorded in our condensed consolidated financial statements and the tax bases of these amounts. Deferred tax assets and liabilities are measured using the enacted tax rates expected to apply to taxable income in the periods in which the deferred tax asset or liability is expected to be realized or settled.
	Given the impact on our pre-tax results of net gains or losses resulting from our derivative transactions and our investment portfolio, and the continued uncertainty around our ability to rely on certain short-term financial projections, which directly affects our ability to estimate an effective tax rate for the full year, we record our interim period income tax provision (benefit) based on actual results of operations.
	For federal income tax purposes, we had approximately $1.8 billion of net operating loss (“NOL”) carryforwards as of September 30, 2013. To the extent not utilized, the NOL carryforwards will expire during tax years 2028 through 2032. To protect our ability to utilize our NOLs and other tax assets from an “ownership change” under U.S. federal income tax rules, we adopted certain tax benefit preservation measures, including amendments to our certificate of incorporation and by-laws and the adoption of a tax benefit preservation plan.
	As of September 30, 2013 and December 31, 2012, before consideration of our valuation allowance, we had deferred tax assets (“DTA”), net of deferred tax liabilities, of approximately $1,054.3 million and $989.7 million, respectively.
	We are required to establish a valuation allowance against our DTA when it is more likely than not that all or some portion of our DTA will not be realized. At each balance sheet date we assess our need for a valuation allowance, and this assessment is based on all available evidence, both positive and negative, and requires management to exercise judgment and make assumptions regarding whether such DTA will be realized in future periods. Future realization of our DTA will ultimately depend on the existence of sufficient taxable income of the appropriate character (ordinary income or capital gains) within the applicable carryback and carryforward periods provided under the tax law. The primary sources of negative evidence that we considered are our cumulative losses in recent years, and the continued uncertainty around our future results. We also considered several sources of positive evidence when assessing the need for a valuation allowance, such as future reversals of existing taxable temporary differences, future projections of taxable income, taxable income within the applicable carryback periods, and potential tax planning strategies. In making our assessment of the more likely than not standard, the weight assigned to the effect of both negative and positive evidence is commensurate with the extent to which such evidence can be objectively verified.
	A valuation allowance of approximately $1,036.4 million and $989.7 million was recorded against our net DTA of approximately $1,054.3 million and $989.7 million at September 30, 2013 and December 31, 2012, respectively. The remaining DTA of approximately $17.9 million at September 30, 2013 represents our NOL carryback, which we may be able to utilize as part of a compromised settlement against the adjustments proposed by the Internal Revenue Service (“IRS”) relating to tax years 2000 through 2007, as discussed in more detail below.
	We are currently contesting proposed adjustments resulting from the examination by the IRS of our 2000 through 2007 tax years. The IRS opposes the recognition of certain tax losses and deductions that were generated through our investment in a portfolio of non-economic Real Estate Mortgage Investment Conduits (“REMIC”) residual interests and has proposed adjustments denying the associated tax benefits of these items. The proposed adjustments relating to the 2000 through 2007 tax years, if sustained, will result in additional income taxes of approximately $128 million plus proposed penalties of approximately $42 million. Additionally, we would incur interest on any sustained adjustments. We appealed these proposed adjustments to the IRS Office of Appeals (“Appeals”) and made “qualified deposits” with the U.S. Department of the Treasury in the amount of approximately $85 million in June 2008 relating to the 2000 through 2004 tax years and approximately $4 million in May 2010 relating to the 2005 through 2007 tax years in order to avoid the accrual of above-market-rate interest with respect to the proposed adjustments. In December 2010, we reached a tentative settlement agreement with Appeals. However, because we had claimed a refund of approximately $105 million with respect to our 2006 and 2007 taxable years based on a carryback of an NOL generated from our 2008 taxable year, review of the tentative settlement agreement by the Joint Committee on Taxation (“JCT”) was required. After the JCT completed its review, Appeals reconsidered the tentative settlement and informed us that it was no longer willing to enter into a settlement based on the originally proposed terms.
	We have made several attempts to reach a compromised settlement with Appeals, but in January 2013, we were notified that Appeals had rejected our latest settlement offer and plans to issue a formal notice of deficiency. Upon receipt of the notice of deficiency, we will have 90 days to either pay the assessed tax liabilities, penalties and interest (the “deficiency amount”) in full or petition the U.S. Tax Court to litigate the deficiency amount. If we choose to pay the deficiency amount, we could pursue a full refund of such amount through litigation in either U.S. District Court or the U.S. Court of Federal Claims. Litigation of the deficiency amount may result in substantial legal expenses and the litigation process could take several years to resolve. We can provide no assurance regarding the outcome of any such litigation or whether a compromised settlement with the IRS will ultimately be reached. After discussions with outside counsel about the issues raised in the examination, we believe that an adequate provision for income taxes has been made for the potential liabilities that may result from this matter. However, if the ultimate resolution of this matter produces a result that differs materially from our current expectations, there could be a material impact on our effective tax rate, results of operations and cash flows.

Note_13_Statutory_Information_

Note 13 - Statutory Information (Notes)	9 Months Ended
	Sep. 30, 2013
Statutory 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 statutory accounting practices include a variety of publications of the National Association of Insurance Commissioners (“NAIC”) 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, 2013, our use of any prescribed or permitted statutory accounting practices did not result in reported statutory surplus or risk-based capital being significantly different from what would have been reported had NAIC statutory accounting practices been followed.
	Under state insurance regulations, Radian Guaranty is required to maintain minimum surplus levels and, in certain states, a minimum amount of statutory capital relative to the level of net RIF, or “risk-to-capital” as described below. Sixteen states (the “RBC States”) currently impose a statutory or regulatory risk-based capital requirement (the “Statutory RBC Requirement”). The most common Statutory RBC Requirement is that a mortgage insurer’s risk-to-capital ratio not exceed 25 to 1. In some of the RBC States, the Statutory RBC Requirement is that a mortgage insurer must maintain a minimum policyholder position, which is based on both risk and surplus levels (the “MPP Requirement”). Unless an RBC State grants a waiver or other form of relief, if a mortgage insurer is not in compliance with the Statutory RBC Requirement of such RBC State, it 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. During the nine months ended September 30, 2013, the RBC States accounted for approximately 55.4% of Radian Guaranty’s total primary NIW.
	We actively manage Radian Guaranty’s statutory capital position in various ways, including: (1) through internal and external reinsurance arrangements; (2) by seeking opportunities to reduce our risk exposure through commutations or other negotiated transactions; (3) by contributing additional capital from Radian Group to our mortgage insurance subsidiaries; and (4) by realizing gains in our investment portfolio through open market sales of securities. At September 30, 2013, Radian Group had unrestricted cash and liquid investments of $822.1 million. Approximately $119.5 million (approximately $75.5 million of which relates to payments we expect to make in the next 12 months) of future expected corporate expenses and interest payments have been accrued for and paid by certain subsidiaries to Radian Group as of September 30, 2013, and therefore, the total unrestricted cash and liquid investments held by Radian Group as of September 30, 2013 include these amounts. Net of these advances, our available holding company liquidity is $702.6 million. We expect to use a portion of our remaining available liquidity to further support Radian Guaranty’s capital position, including to continue to maintain Radian Guaranty’s risk-to-capital ratio at 20 to 1 or below. In addition, while our other mortgage insurance subsidiaries are not subject to Statutory RBC Requirements, these subsidiaries, which provide reinsurance to Radian Guaranty but do not write direct business of their own, are subject to certain minimum capital and statutory surplus requirements. All of these subsidiaries were in compliance with their respective capital and statutory surplus requirements as of September 30, 2013. In order for Radian Guaranty to continue to receive appropriate statutory credit for the reinsurance arrangements with these subsidiaries and therefore to continue to utilize these arrangements, some of these subsidiaries may require additional capital contributions in the future to maintain minimum capital levels.
	Radian Guaranty’s statutory net income (loss) and statutory policyholders’ surplus as of or for the periods indicated were as follows:
	(In millions)	As of and for the Nine Months Ended September 30, 2013			As of and for the Year Ended December 31, 2012
	Statutory net income (loss)	$	10.7		$	(175.9	)
	Statutory surplus	1,239.10			926
	Contingency reserve	17.2			—
	The components of Radian Guaranty’s risk-to-capital calculation appear in the table below. For purposes of the risk-to-capital requirements imposed by certain states, statutory capital is defined as the sum of statutory policyholders’ surplus (i.e., statutory-basis capital and surplus) plus statutory contingency reserves.
		September 30,			December 31, 2012
		2013
	($ in millions)
	RIF, net (1)	$	24,899.40		$	19,226.70
	Statutory surplus	$	1,239.10		$	926
	Statutory contingency reserve	17.2			—
	Statutory capital	$	1,256.30		$	926
	Risk-to-capital	19.8		:1	20.8		:1
	______________________
	-1	RIF, net excludes risk ceded through reinsurance contracts and RIF on defaulted loans.
	We expect to continue to maintain Radian Guaranty’s risk-to-capital ratio at 20 to 1 or below, including, as necessary, by making contributions to Radian Guaranty from Radian Group’s available liquidity. 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, 2013.
	The improvement in Radian Guaranty’s risk-to-capital ratio in the first nine months of 2013 was primarily due to capital contributions from Radian Group to Radian Guaranty totaling $230 million, the release of contingency reserves at Radian Asset Assurance, and the impact of the QSR transactions entered into in 2012. This benefit was partially offset by an increase in net RIF at Radian Guaranty.
	Radian Asset Assurance is a wholly-owned subsidiary of Radian Guaranty. If our financial guaranty portfolio performs worse than anticipated, including if we are required to establish (or increase) one or more statutory reserves on defaulted obligations that we insure, or if we make net commutation payments to terminate insured financial guaranty obligations in excess of the then established statutory reserves for such obligations, the statutory capital of Radian Guaranty would also be negatively impacted. We establish statutory financial guaranty reserves at the time of default, whereas for GAAP reporting purposes, loss reserves are established when estimated losses exceed unearned premiums, regardless of whether a default has occurred. Any decrease in the statutory policyholders’ surplus in our financial guaranty business would have a direct negative impact on Radian Guaranty’s capital position and may affect its ability to remain in compliance with the Statutory RBC Requirements. In addition, any decrease in the amount of capital credit that Radian Guaranty otherwise receives for capital attributable to Radian Asset Assurance could have a negative impact on Radian Guaranty’s capital adequacy for purposes of GSE eligibility, as further discussed below.
	As of September 30, 2013, Radian Asset Assurance maintained claims paying resources of $1.6 billion (which included statutory policyholders’ surplus, contingency reserves, unearned premium reserves, the present value of installment premiums and loss and LAE reserves). As of September 30, 2013, the statutory policyholders’ surplus of Radian Asset Assurance was approximately $1.2 billion. In July 2013, Radian Asset Assurance paid an ordinary dividend of $36 million to Radian Guaranty.
	We and our insurance subsidiaries are subject to comprehensive, detailed regulation that is principally designed for the protection of our insured policyholders rather than for the benefit of investors, by the insurance departments in the various states where our insurance subsidiaries are licensed to transact business. Insurance laws vary from state to state, but generally grant broad supervisory powers to state agencies or officials to examine insurance companies and 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.
	The GSEs and state insurance regulators impose various capital requirements on our insurance subsidiaries. The state insurance regulatory requirements include risk-to-capital ratios, risk-based capital measures, and surplus requirements that potentially limit the amount of insurance that each of our insurance subsidiaries may write. The GSEs’ current eligibility requirements for Radian Guaranty to maintain its status as an eligible mortgage insurer include financial strength ratings requirements (with respect to which we are currently operating under remediation plans) and also impose limitations on the type of risk insured, standards for the geographic and customer diversification of risk, procedures for claims handling, standards for acceptable underwriting practices, standards for certain reinsurance cessions and financial and capital requirements that generally have mirrored state insurance regulatory requirements. The GSEs currently are considering revisions to their standard mortgage insurer eligibility requirements. Among other changes, the new GSE eligibility requirements may include new capital standards for private mortgage insurers that could impose more onerous capital requirements than are currently in effect, including potentially: (i) a risk-to-capital ratio below (a) the current 25 to 1 requirement that is statutorily imposed in most of the RBC states and (b) the 20 to 1 risk-to-capital ratio that we currently expect to maintain for Radian Guaranty; (ii) higher capital requirements for loans insured prior to 2009; and (iii) a limitation on the amount of capital credit available for subsidiary capital (including Radian Guaranty’s capital that is attributable to Radian Asset Assurance). While it remains unclear what form the new eligibility requirements may take or the potential implementation period that may be allowed, we expect the GSEs to release the new eligibility requirements by the end of 2013 and for them to become effective following an implementation period.
	The GSEs and our state insurance regulators possess significant discretion with respect to our insurance subsidiaries. If Radian Guaranty’s regulatory risk-based capital position fails to comply with applicable state statutory or regulatory risk-based capital requirements, or if Radian Guaranty is unable to satisfy the GSEs’ eligibility requirements: (i) insurance regulators or the GSEs may limit or cause Radian Guaranty to cease writing new mortgage insurance; (ii) the GSEs may terminate or otherwise restrict Radian Guaranty’s eligibility to insure loans purchased by the GSEs; (iii) Radian Guaranty’s customers may decide not to insure loans with Radian Guaranty or may otherwise limit the type or amount of business done with Radian Guaranty; and (iv) state or federal regulators could pursue regulatory actions or proceedings, including possible supervision or receivership actions against us in the future. Our failure to maintain adequate levels of capital could also 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, 2013, the amount of restricted net assets held by our consolidated subsidiaries (which represents our equity investment in those insurance subsidiaries) totaled $1.3 billion of our consolidated net assets.

Note_14_Selected_Financial_Inf

Note 14 - Selected Financial Information of Registrant - Radian Group (Notes)	9 Months Ended
	Sep. 30, 2013
Condensed Financial Information of Parent Company Only Disclosure [Abstract]	'
Condensed Financial Information of Parent Company Only Disclosure	'
	Selected Financial Information of Registrant—Radian Group
	(In thousands)	September 30,		December 31, 2012
		2013
	Investment in subsidiaries, at equity in net assets	$	1,356,140	$	1,234,229
	Total assets	2,051,620		1,550,619
	Long-term debt	921,927		663,571
	Total liabilities	1,157,100		814,294
	Total stockholders’ equity	894,520		736,325
	Total liabilities and stockholders’ equity	2,051,620		1,550,619

Note_15_Commitments_and_Contin

Note 15 - Commitments and Contingencies (Notes)	9 Months Ended
	Sep. 30, 2013
Commitments and Contingencies Disclosure [Abstract]	'
Commitments and Contingencies Disclosure	'
	Commitments and Contingencies
	Legal Proceedings
	We are routinely involved in a number of legal actions and proceedings, the outcome of which are always uncertain. The legal proceedings could result in adverse judgments, settlements, fines, injunctions, restitutions or other relief that could require significant expenditures or have other effects on our business. In accordance with applicable accounting standards and guidance, we establish accruals for a legal proceeding only when we determine both that it is probable that a loss has been incurred and the amount of the loss is reasonably estimable. We accrue the amount that represents our best estimate of the probable loss; however, if we can only determine a range of estimated losses, we accrue an amount within the range that, in our judgment, reflects the most likely outcome, and if none of the estimates within the range is more likely, we accrue the minimum amount of the range.
	In the course of our regular review of pending legal matters, we determine whether it is reasonably possible that a potential loss relating to a legal proceeding may have a material impact on our liquidity, results of operations or financial condition. If we determine such a loss is reasonably possible, we disclose information relating to any such potential loss, including an estimate or range of loss or a statement that such an estimate cannot be made. On a quarterly and annual basis, we review relevant information with respect to legal loss contingencies and update our accruals, disclosures and estimates of reasonably possible losses or range of losses based on such reviews. We are often unable to estimate the possible loss or range of loss until developments in such matters have provided sufficient information to support an assessment of the range of possible loss, such as quantification of a damage demand from plaintiffs, discovery from other parties and investigation of factual allegations, rulings by the court on motions or appeals, analysis by experts, and the progress of settlement negotiations. In addition, we generally make no disclosures for loss contingencies that are determined to be remote. For matters for which we disclose an estimated loss, the disclosed estimate reflects the reasonably possible loss or range of loss in excess of the amount accrued, if any.
	Loss estimates are inherently subjective, based on currently available information, and are subject to management’s judgment and various assumptions. Due to the inherently subjective nature of these estimates and the uncertainty and unpredictability surrounding the outcome of legal proceedings, actual results may differ materially from any amounts that have been accrued.
	On August 13, 2010, American Home Mortgage Servicing, Inc. (“AHMSI”) filed a complaint against Radian Guaranty in the U.S. District Court for the Central District of California, on its own behalf and as servicer for certain RMBS insured by Radian Guaranty under 27 separate bulk primary mortgage insurance policies. AHMSI alleged that in 2008, it mistakenly sent cancellation notices to Radian Guaranty for certain loans covered under these policies, and that Radian Guaranty wrongfully refused to reinstate coverage for these loans after AHMSI discovered the alleged error. According to AHMSI, Radian Guaranty’s refusal to reinstate coverage was in breach of its contractual duties under the policies and in bad faith. AHMSI sought money damages and injunctive relief requiring Radian Guaranty to reinstate full coverage on all loans insured under the policies. Without making any admissions of liability or other concessions, and in order to avoid the expense and uncertainty of further litigation, on September 13, 2013, Radian Guaranty entered into a Settlement Agreement and Mutual Release (the “Settlement Agreement”) with the defendants with respect to approximately 680 loans, relating to approximately $19 million of RIF that were affected by this alleged error. Pursuant to the Settlement Agreement, Radian agreed to reinstate a majority of the insurance policies at issue (the “Reinstated Certificates”) upon receipt of premiums in arrears for each of the Reinstated Certificates. Most of the remaining insurance policies at issue were deemed cancelled and Radian Guaranty paid an agreed upon amount (the “Settlement Amount”) with respect to these policies. The Settlement Agreement, including payment of the Settlement Amount, did not have a material impact on our liquidity, results of operations or financial condition.
	On August 1, 2011, Radian Guaranty filed a lawsuit against Quicken Loans Inc. (“Quicken”) in the U.S. District Court for the Eastern District of Pennsylvania. On September 5, 2012, Radian Guaranty filed an amended complaint. Radian Guaranty’s complaint, as amended, seeks a declaratory judgment that it properly rescinded mortgage insurance coverage under Radian Guaranty’s master insurance policy and delegated underwriting endorsement for approximately 220 home mortgage loans originated by Quicken based upon deficiencies and improprieties in the underwriting process. The approximate 220 home mortgage loans relate to an aggregate RIF of approximately $13 million. On October 25, 2012, Quicken answered Radian Guaranty’s amended complaint and asserted counterclaims against Radian Guaranty for alleged breach of contract and bad faith. On November 19, 2012, Radian Guaranty moved to dismiss Quicken’s counterclaims. On October 28, 2013, the court granted Radian Guaranty’s motion to dismiss in part and denied it in part. The court ruled that Quicken could not pursue a tort theory of bad faith and that Quicken had not stated a basis to toll the statute of limitations for any claims arising after the lawsuit was filed. The court permitted Quicken’s remaining claims to proceed at this stage. This litigation is in the early stages of the proceedings, and therefore, we are unable to estimate whether a loss is reasonably possible in this matter.
	We have been named as a defendant in a number of putative class action lawsuits alleging, among other things, that our captive reinsurance agreements violate the Real Estate Settlement Practices Act of 1974 (“RESPA”). On December 9, 2011, an action titled Samp v. JPMorgan Chase Bank, N.A. (the “Samp case”), was filed in the U.S. District Court for the Central District of California. The defendants are JPMorgan Chase Bank, N.A., its affiliates (collectively, “JPMorgan”), and several mortgage insurers, including Radian Guaranty. The plaintiffs purport to represent a class of borrowers whose loans allegedly were referred to mortgage insurers by JPMorgan in exchange for reinsurance agreements between the mortgage insurers and JPMorgan’s captive reinsurer. Plaintiffs assert violations of RESPA. On October 4, 2012, Radian Guaranty filed a motion to dismiss on a number of grounds, and on May 7, 2013, the court granted the motion and dismissed the plaintiffs’ claims with prejudice. The court ruled that the plaintiffs could not state a claim against Radian Guaranty because it did not insure their loans, and, in addition, ruled that their claims were barred by the statute of limitations. On June 5, 2013, plaintiffs appealed these rulings to the U.S. Court of Appeals for the Ninth Circuit.
	Each of the cases described below are putative class actions (with alleged facts substantially similar to the facts alleged in the Samp case discussed above) in which Radian Guaranty has been named as a defendant:
	•	On December 30, 2011, a putative class action under RESPA titled White v. PNC Financial Services Group was filed in the U.S. District Court for the Eastern District of Pennsylvania. On September 29, 2012, plaintiffs filed an amended complaint. In this case, Radian Guaranty has insured the loan of one of the plaintiffs. On November 26, 2012, Radian Guaranty filed a motion to dismiss the plaintiffs’ claims as barred by the statute of limitations. On June 20, 2013, the court granted Radian Guaranty’s motion and dismissed plaintiffs’ claims, but granted plaintiffs leave to file a second amended complaint. Plaintiffs filed their second amended complaint on July 5, 2013. Radian Guaranty filed a motion to dismiss plaintiffs’ second amended complaint on July 22, 2013.
	•	On January 13, 2012, a putative class action under RESPA titled Menichino, et al. v. Citibank, N.A., et al., was filed in the U.S. District Court for the Western District of Pennsylvania. Radian Guaranty was not named as a defendant in the original complaint. On December 4, 2012, plaintiffs amended their complaint to add Radian Guaranty as an additional defendant. In this case, Radian Guaranty has insured the loan of one of the plaintiffs. On February 4, 2013, Radian Guaranty filed a motion to dismiss the claims against it as barred by the statute of limitations. On July 19, 2013, the court granted Radian Guaranty’s motion and dismissed plaintiffs’ claims, but granted plaintiffs leave to file a second amended complaint. Plaintiffs filed their second amended complaint on August 16, 2013. Radian Guaranty filed a motion to dismiss plaintiffs’ second amended complaint on September 17, 2013.
	•	On April 5, 2012, a putative class action under RESPA titled Riddle v. Bank of America Corporation, et al. was filed in the U.S. District Court for the Eastern District of Pennsylvania. On January 4, 2013, Radian Guaranty moved to dismiss plaintiffs’ claims as barred by the statute of limitations. The court denied that motion on April 11, 2013, and ordered a brief period of discovery limited to the statute of limitations issue. The discovery period was scheduled to end on June 14, 2013; however, on May 31, 2013, the plaintiffs voluntarily dismissed Radian Guaranty from the lawsuit because it did not insure any of their loans.
	•	On April 5, 2012, a putative class action under RESPA titled Manners, et al. v. Fifth Third Bank, et al. was filed in the U.S. District Court for the Western District of Pennsylvania. On September 28, 2012, plaintiffs filed an amended complaint adding three borrowers whose loans were insured by Radian Guaranty. On November 28, 2012, Radian Guaranty moved to dismiss plaintiffs’ claims as barred by the statute of limitations. On July 19, 2013, the court granted Radian Guaranty’s motion and dismissed plaintiffs’ claims, but granted plaintiffs leave to file a second amended complaint. Plaintiffs filed their second amended complaint on August 16, 2013. Radian Guaranty filed a motion to dismiss plaintiffs’ second amended complaint on September 17, 2013.
	•	On May 18, 2012, a putative class action under RESPA titled Hill, et al. v. Flagstar Bank FSB, et al. was filed in the U.S. District Court for the Eastern District of Pennsylvania. In this case, Radian Guaranty insured the loan of one of the plaintiffs, however, that plaintiff withdrew from the lawsuit and Radian Guaranty was dismissed from the case on August 22, 2013.
	•	On May 31, 2012, a putative class action under RESPA titled Barlee, et al. v. First Horizon National Corporation, et al. was filed in the U.S. District Court for the Eastern District of Pennsylvania. On October 9, 2012, plaintiffs filed an amended complaint, and on November 5, 2012, Radian Guaranty filed a motion to dismiss the amended complaint for lack of standing because it did not insure any of the plaintiffs’ loans. On February 27, 2013, the court granted Radian Guaranty’s motion to dismiss and Radian Guaranty has been dismissed from this lawsuit.
	•	On June 28, 2012, a putative class action under RESPA titled Cunningham, et al. v. M&T Bank Corporation, et al. was filed in the U.S. District Court for the Middle District of Pennsylvania. On October 9, 2012, plaintiffs filed an amended complaint in which they added one borrower whose loan was insured by Radian Guaranty. On December 10, 2012, Radian Guaranty moved to dismiss plaintiffs’ claims as barred by the statute of limitations, and on February 11, 2013, plaintiffs filed an opposition to the motion to dismiss. On October 30, 2013, the court denied that motion and ordered a brief period of discovery limited to the statute of limitations issue. The discovery period is scheduled to end on January 3, 2014.
	•	On January 4, 2013, a putative class action under RESPA titled Ba, et al. v. HSBC USA, Inc., et al., was filed in the U.S. District Court for the Eastern District of Pennsylvania. On February 26, 2013, Radian Guaranty moved to dismiss this lawsuit for lack of standing because it did not insure any of the plaintiffs’ loans. On March 25, 2013, plaintiffs voluntarily dismissed Radian Guaranty from this lawsuit.
	With respect to the Samp case and the other similar putative class actions discussed above, Radian Guaranty believes that the claims are without merit and intends to vigorously defend itself against these claims. We are not able to estimate the reasonably possible loss or range of loss for these matters because the proceedings are in a very preliminary stage and there is uncertainty as to the likelihood of a class being certified or the ultimate size of a class.
	In addition to the litigation discussed above, we are involved in litigation that has arisen in the normal course of our business. We are contesting the allegations in each such pending action and management believes, based on current knowledge and after consultation with counsel, that the outcome of such litigation will not have a material adverse effect on our consolidated financial condition. However, the outcome of litigation and other legal and regulatory matters 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.
	In addition to the private lawsuits discussed above, we and other mortgage insurers have been subject to inquiries from the Minnesota Department of Commerce and the Office of the Inspector General of the U.S. Department of Housing and Urban Development (“HUD”), requesting information relating to captive reinsurance. We have cooperated with these requests for information. The Dodd-Frank Act amended RESPA and transferred the authority to implement and enforce RESPA from HUD to the Consumer Financial Protection Bureau (“CFPB”). In January 2012, we and other mortgage insurers received a request for information and documents from the CFPB relating to captive reinsurance arrangements, and in June 2012, we and other mortgage insurers received a Civil Investigative Demand from the CFPB as part of its investigation to determine whether mortgage lenders and private mortgage insurance providers engaged in acts or practices in violation of the Dodd-Frank Act, RESPA and the Consumer Financial Protection Act. On April 4, 2013, we reached a settlement with the CFPB, which was approved by the U.S. District Court for the Southern District of Florida on April 9, 2013. The settlement concludes the investigation with respect to Radian Guaranty without the CFPB making any findings of wrongdoing. As part of the settlement, Radian Guaranty agreed not to enter into new captive reinsurance arrangements for a period of ten years and to pay a civil penalty of $3.75 million. We have not entered into any new captive reinsurance arrangements since 2007. During the high-claim years that followed the most recent economic downturn, captive arrangements have proven to represent a critical component of our loss mitigation strategy, effectively serving as designed to protect our capital position during a period of stressed losses. As of December 31, 2012, we had received total cash reinsurance recoveries from these captive reinsurance arrangements of approximately $750 million. In August 2013, Radian Guaranty and other mortgage insurers received a draft Consent Order from the Minnesota Department of Commerce, containing proposed conditions and unspecified penalties, to resolve its outstanding inquiries related to captive reinsurance arrangements involving mortgage insurance in Minnesota. We continue to cooperate with the Minnesota Department of Commerce and are engaged in active discussions with them with respect to their inquiries, including various alternatives for resolving this matter. We cannot predict the outcome of this matter or whether additional actions or proceedings may be brought against us.
	We are also currently contesting proposed adjustments resulting from the examination by the IRS of our 2000 through 2007 tax years. The IRS opposes the recognition of certain tax losses and deductions that were generated through our investment in a portfolio of non-economic REMIC residual interests currently held by Commonwealth Mortgage Assurance Company of Texas, one of our wholly-owned subsidiaries. The proposed adjustments relating to the 2000 through 2007 tax years, if sustained, will result in additional income taxes of approximately $128 million plus proposed penalties of approximately $42 million. Additionally, we would incur interest on any sustained adjustments. We appealed the proposed adjustments and reached a tentative settlement agreement with Appeals. Upon subsequent review and consideration, however, Appeals informed us that it was no longer willing to settle on the originally proposed terms. After several attempts to reach a compromised settlement, we were notified in January 2013 that Appeals rejected our latest offer and plans to issue a formal notice of deficiency. Upon receipt of the notice, we will have 90 days to pay the deficiency amount or petition the U.S. Tax Court to litigate the matter. If we choose to pay the deficiency amount, we could pursue a full refund of such amount through litigation in either U.S. District Court or the U.S. Court of Federal Claims. Litigation of the deficiency amount may result in substantial legal expenses and the litigation process could take several years to resolve. We can provide no assurance regarding the outcome of any such litigation or whether a compromised settlement with the IRS may ultimately be reached. See Note 12 for additional information.
	Under our master insurance policy, any suit or action arising from any right of the 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. We continue to face a number of challenges from certain lender and servicer customers regarding our insurance rescissions and claim denials, which have resulted in some reversals of our decisions regarding rescissions or denials. We are currently in discussions with customers regarding rescissions and claim denials, which if not resolved, could result in arbitration or additional judicial proceedings. The assumptions embedded in our estimated default to claim rate on our in-force defaulted inventory includes an adjustment to our estimated rescission and denial rate to account for the fact that we expect a certain number of previously rescinded policies and denied claims ultimately to be paid, as a result of valid challenges by such policy holders. See Note 8 for further information.
	Further, we have identified a significant number of loans in our total defaulted portfolio (in particular, our older defaulted portfolio) for which “appropriate proceedings” (actions or proceedings such as foreclosure that provide the insured with title to the property) may not have been commenced within the outermost deadline in our master insurance policy. We currently are in discussions with the servicers for these loans regarding this potential violation and our corresponding rights under the master insurance policy. While we can provide no assurance regarding the outcome of these conversations or the ultimate resolution of these issues, it is possible that this matter could result in arbitration or legal proceedings.
	The elevated levels of our rate of rescissions, claim denials and claim curtailments (related to servicer negligence) have led to an increased risk of litigation by lenders, policyholders and servicers challenging our right to rescind coverage, deny claims or curtail claim amounts. Although we believe that our loss mitigation actions are justified under our policies, if we are not successful in defending these actions, we may need to reassume the risk on and increase loss reserves for previously rescinded policies or pay additional claims on curtailed amounts. See Note 8 for further 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 (1) audited financial statements for the insurance subsidiary participating in the transaction, or (2) 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 approximately $142.7 million of remaining credit exposure as of September 30, 2013.
	On March 1, 2011, our subsidiary, Enhance Financial Services Group Inc. (“EFSG”) sold its 45% interest in the holding company of a Brazilian insurance company, which specializes in surety and agricultural insurance, to another owner for a nominal purchase price. This holding company and its subsidiaries are subject to regulation by The Superintendence of Private Insurance, the regulatory agency responsible for the supervision and control of the insurance market in Brazil. Although EFSG wrote off its entire interest in this company in 2005 and has sold its ownership interest, under Brazilian law, it is possible that EFSG could become liable for its proportionate share of the liabilities of the company related to the period in which EFSG was a significant shareholder, if the company was to become insolvent and had insufficient capital to satisfy its outstanding liabilities. EFSG’s share of the liabilities of the company attributable to this period was approximately $103.4 million as of December 31, 2010, the date of the most recent financial information available to us.
	As part of the non-investment-grade allocation component of our investment program, we had unfunded commitments of $7.4 million at September 30, 2013, related to alternative investments that are primarily private equity structures. These commitments have capital calls expected through 2015, with the possibility of additional calls through 2017, and certain fixed expiration dates or other termination clauses.
	Our mortgage insurance business provides an outsourced underwriting service to its customers known as contract underwriting. Typically, we agree that if we make a material error in underwriting a loan, we will provide a remedy to the customer, by purchasing the loan or placing additional mortgage insurance coverage on the loan, or by indemnifying the customer against loss up to a maximum specified amount. By providing these remedies, we assume some credit risk and interest-rate risk if an error is found during the limited remedy period in the agreements governing our provision of contract underwriting services. We limit the recourse available to our contract underwriting customers to apply only to those loans that are simultaneously underwritten for compliance with secondary market compliance and for potential mortgage insurance. In the first nine months of 2013, we paid losses related to contract underwriting remedies of approximately $1.6 million. Rising mortgage interest rates or further economic uncertainty may expose our mortgage insurance business to an increase in such costs. In the first nine months of 2013, our provision for contract underwriting expenses was approximately $1.7 million and our reserve for contract underwriting obligations at September 30, 2013 was approximately $3.8 million. We monitor this risk and negotiate our underwriting fee structure and recourse agreements on a client-by-client basis. We also routinely audit the performance of our contract underwriters.
	We have incentive, retention and severance agreements with certain employees in our financial guaranty business. The total cost expected to be incurred under these agreements is $13.3 million, of which $3.9 million of unearned retention expense has not been recorded as of September 30, 2013. The remaining cost for these agreements is expected to be recorded by the end of 2015.

Note_16_Capital_Stock_Notes

Note 16 - Capital Stock (Notes)	9 Months Ended
	Sep. 30, 2013
Capital Stock [Abstract]	'
Stockholders' Equity Note Disclosure	'
	Capital Stock
	In March 2013, we sold 39.1 million shares of our common stock at a public offering price of $8.00 per share. We received net proceeds of approximately $299.4 million.

Note_4_Fair_Value_of_Financial1

Note 4 - Fair Value of Financial Instruments (Policies)	9 Months Ended
	Sep. 30, 2013
Fair Value Disclosures [Abstract]	'
Fair Value of Financial Instruments, Policy	'
	Our estimated fair value measurements are intended to reflect the assumptions market participants would use in pricing an asset or liability based on the best information available. Assumptions include the risks inherent in a particular valuation technique (such as a pricing model) and the risks inherent in the inputs to the model. Changes in economic conditions and capital market conditions, including but not limited to, credit spread changes, benchmark interest rate changes, market volatility and changes in the value of underlying collateral or of any third-party guaranty or insurance, could cause actual results to differ materially from our estimated fair value measurements. We define fair value as the current amount that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. In the event that our investments or derivative contracts were sold, commuted, terminated or settled with a counterparty or transferred in a forced liquidation, the amounts received or paid may be materially different from those determined in accordance with the accounting standard regarding fair value measurements. Differences may also arise between our recorded fair value and the settlement or termination value with a counterparty based upon consideration of information that may not be available to another market participant. Those differences, which may be material, are recorded as realized gains/(losses) in our condensed consolidated statements of operations in the period in which the transaction occurs. There were no significant changes to our fair value methodologies during the nine months ended September 30, 2013.
	We established a fair value hierarchy by prioritizing the inputs to valuation techniques used to measure fair value. 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 three levels of the fair value hierarchy under this standard are described 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.
	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.
	When determining the fair value of our liabilities, we are required to incorporate into the fair value of those liabilities an adjustment that reflects our own non-performance risk. Our five-year CDS spread is an observable quantitative measure of our non-performance risk and is used by typical market participants to determine the likelihood of our default; the CDS spread actually used in the valuation of specific fair value liabilities is typically based on the remaining term of the insured obligation. As our CDS spread tightens or widens, it has the effect of increasing or decreasing, respectively, the fair value of our liabilities with a corresponding impact on our results of operations.

Note_5_VIEs_Policies

Note 5 - VIEs (Policies)	9 Months Ended
	Sep. 30, 2013
Variable Interest Entity Consolidation [Abstract]	'
Consolidation, Variable Interest Entity, Policy	'
	In continually assessing our involvement with VIEs, we consider certain events such as the VIE’s failure to meet certain contractual conditions, including performance tests and triggers, servicer termination events and events of default, that, should they occur, may provide us with additional control rights over the VIE for a limited number of our transactions. The occurrence of these events would cause us to reassess our initial determination that we are not the primary beneficiary of a VIE. In addition, changes to its governance structure that would allow us to direct the activities of a VIE or our acquisition of additional financial interests in the VIE, would also cause us to reassess our determination that we are not the primary beneficiary of a VIE. Many of our financial guaranty contracts provide us with substantial control rights over the activities of VIEs upon the occurrence of default or other performance triggers described above. Therefore, additional VIEs may be consolidated by us if these events were to occur. Prior to the occurrence of these contingent conditions, another party (typically the collateral manager, servicer or equity holder) involved with the transaction holds the power to manage the VIE’s assets and to impact the economic performance of the VIE, without our ability to control or direct such powers.
	Our control rights in these VIEs, which we obtained due to an event of default or breach of a performance trigger as defined in the transaction, generally provide us with either a right to replace the VIE servicer or, in some cases, the right to direct the sale of the VIE assets. In those instances where we have determined that we are the primary beneficiary, we consolidate the assets and liabilities of the VIE. We have elected to carry the financial assets and financial liabilities of these VIEs at fair value.
	Our interests in VIEs for which we are not the primary beneficiary are accounted for as insurance or reinsurance contracts or credit derivatives. For insurance and reinsurance contracts, we record reserves for losses and LAE, and for credit derivatives, we record cumulative changes in fair value as a derivative asset or liability.

Note_12_Income_Taxes_Policies

Note 12 - Income Taxes (Policies)	9 Months Ended
	Sep. 30, 2013
Income Tax Disclosure [Abstract]	'
Income Tax, Policy	'
	We provide for income taxes in accordance with the provisions of the accounting standard regarding accounting for income taxes. As required under this standard, our deferred tax assets and liabilities are recognized under the balance sheet method, which recognizes the future tax effect of temporary differences between the amounts recorded in our condensed consolidated financial statements and the tax bases of these amounts. Deferred tax assets and liabilities are measured using the enacted tax rates expected to apply to taxable income in the periods in which the deferred tax asset or liability is expected to be realized or settled.
	We are required to establish a valuation allowance against our DTA when it is more likely than not that all or some portion of our DTA will not be realized. At each balance sheet date we assess our need for a valuation allowance, and this assessment is based on all available evidence, both positive and negative, and requires management to exercise judgment and make assumptions regarding whether such DTA will be realized in future periods. Future realization of our DTA will ultimately depend on the existence of sufficient taxable income of the appropriate character (ordinary income or capital gains) within the applicable carryback and carryforward periods provided under the tax law. The primary sources of negative evidence that we considered are our cumulative losses in recent years, and the continued uncertainty around our future results. We also considered several sources of positive evidence when assessing the need for a valuation allowance, such as future reversals of existing taxable temporary differences, future projections of taxable income, taxable income within the applicable carryback periods, and potential tax planning strategies. In making our assessment of the more likely than not standard, the weight assigned to the effect of both negative and positive evidence is commensurate with the extent to which such evidence can be objectively verified.

Note_2_Segment_Reporting_Table

Note 2 - Segment Reporting (Tables)	9 Months Ended
	Sep. 30, 2013
Segment Reporting [Abstract]	'
Schedule of Segment Reporting Information, by Segment [Table Text Block]	'
	Summarized financial information concerning our segments, as of and for the periods indicated, are as follows:
		Three Months Ended						Nine Months Ended September 30,
		September 30,
	(In thousands)	2013			2012			2013			2012
	Mortgage Insurance
	Net premiums written—insurance	$	250,799		$	209,890		$	719,244		$	589,261
	Net premiums earned—insurance	$	200,120		$	178,685		$	581,064		$	522,899
	Net investment income	14,868			14,758			45,236			50,377
	Net (losses) gains on investments	(4,380		)	43,379			(91,003		)	102,219
	Change in fair value of derivative instruments	—			(1		)	—			(32		)
	Net losses on other financial instruments	(168		)	(1,960		)	(1,971		)	(2,627		)
	Other income	1,250			1,280			5,121			3,928
	Total revenues	211,690			236,141			538,447			676,764
	Provision for losses	152,012			171,805			420,378			614,612
	Change in PDR	(2,325		)	966			(1,703		)	1,505
	Policy acquisition costs	5,839			10,126			24,072			26,662
	Other operating expenses	59,590			40,250			176,665			107,787
	Interest expense	4,447			1,910			10,820			5,355
	Total expenses	219,563			225,057			630,232			755,921
	Pretax (loss) income	$	(7,873	)	$	11,084		$	(91,785	)	$	(79,157	)
	Cash and investments	$	2,790,050		$	3,192,341
	Deferred policy acquisition costs	29,158			39,148
	Total assets	3,238,224			3,651,849
	Unearned premiums	535,420			333,144
	Reserve for losses and LAE	2,314,785			3,046,706
	VIE debt	11,109			9,448
	Derivative liabilities	—			—
	New Insurance Written (“NIW”) (in millions)	$	13,720		$	10,598		$	38,003		$	25,398
		Three Months Ended						Nine Months Ended September 30,
		September 30,
	(In thousands)	2013			2012			2013			2012
	Financial Guaranty
	Net premiums written—insurance	$	43		$	(613	)	$	(9,988	)	$	(120,374	)
	Net premiums earned—insurance	$	11,864		$	12,278		$	36,632		$	22,208
	Net investment income	11,864			10,877			35,984			40,848
	Net (losses) gains on investments	(2,752		)	41,280			(51,888		)	76,318
	Change in fair value of derivative instruments	10,778			(41,055		)	(70,357		)	(146,905		)
	Net gains (losses) on other financial instruments	1,070			1,220			(1,614		)	(77,827		)
	Gain on sale of affiliate	—			—			—			7,708
	Other income	64			48			198			235
	Total revenues	32,888			24,648			(51,045		)	(77,415		)
	Provision for losses	5,162			4,547			9,146			38,762
	Policy acquisition costs	2,119			2,801			11,087			25,116
	Other operating expenses	11,384			10,179			35,390			32,989
	Interest expense	15,123			10,610			44,051			33,894
	Total expenses	33,788			28,137			99,674			130,761
	Equity in net income (loss) of affiliates	—			—			1			(13		)
	Pretax loss	$	(900	)	$	(3,489	)	$	(150,718	)	$	(208,189	)
	Cash and investments	$	2,293,586		$	2,099,454
	Deferred policy acquisition costs	39,303			52,123
	Total assets	2,520,349			2,389,508
	Unearned premiums	216,167			281,311
	Reserve for losses and LAE	32,094			72,891
	VIE debt	93,109			100,203
	Derivative liabilities	344,870			267,323
Reconciliation of Operating Profit (Loss) from Segments to Consolidated [Table Text Block]	'
	A reconciliation of segment pretax (loss) income to consolidated net (loss) income is as follows:
		Three Months Ended						Nine Months Ended September 30,
		September 30,
	(In thousands)	2013			2012			2013			2012
	Mortgage Insurance pretax (loss) income	$	(7,873	)	$	11,084		$	(91,785	)	$	(79,157	)
	Financial Guaranty pretax loss	(900		)	(3,489		)	(150,718		)	(208,189		)
	Income tax provision (benefit)	3,909			(6,730		)	(9,149		)	(13,180		)
	Consolidated net (loss) income	$	(12,682	)	$	14,325		$	(233,354	)	$	(274,166	)

Note_3_Derivative_Instruments_1

Note 3 - Derivative Instruments (Tables)	9 Months Ended
	Sep. 30, 2013
Derivative Instrument Detail [Abstract]	'
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block]	'
	The following table sets forth our gross unrealized gains and gross unrealized losses on derivative assets and liabilities as of the dates indicated. Certain contracts are in an asset position because the net present value of the contractual premium we receive exceeds the net present value of our estimate of the expected future premiums that a financial guarantor of similar credit quality to us would charge to provide the same credit protection, assuming a transfer of our obligation to such financial guarantor as of the measurement date.
	(In thousands)	September 30,				December 31,
		2013				2012
	Balance Sheets
	Derivative assets:
	Financial Guaranty credit derivative assets	$	7,311			$	12,024
	NIMS related and other	13,533				1,585
	Total derivative assets	20,844				13,609
	Derivative liabilities:
	Financial Guaranty credit derivative liabilities	276,830				196,406
	Financial Guaranty VIE derivative liabilities	68,040				70,467
	Total derivative liabilities	344,870				266,873
	Total derivative liabilities, net	$	324,026			$	253,264
Derivative Instruments, Gain (Loss) [Table Text Block]	'
	The components of the gains (losses) included in the change in fair value of derivative instruments are as follows:
		Three Months Ended								Nine Months Ended September 30,
		September 30,
	(In thousands)	2013				2012				2013			2012
	Statements of Operations
	Net premiums earned—derivatives	$	4,170			$	7,169			$	14,019		$	23,041
	Financial Guaranty credit derivatives	9,198				(51,839		)		(86,233		)	(171,219		)
	Financial Guaranty VIE derivatives	(4,026		)		3,616				513			1,253
	NIMS related and other	1,436				(2		)		1,344			(12		)
	Change in fair value of derivative instruments	$	10,778			$	(41,056	)		$	(70,357	)	$	(146,937	)
Schedule of Derivative Instruments [Table Text Block]	'
	The following table shows selected information about our derivative contracts:
	($ in thousands)	September 30, 2013
		Number of			Par/				Total Net Asset/
		Contracts			Notional				(Liability)
					Exposure
	Product
	NIMS related and other (1)	2			$	—			$	13,533
	Corporate CDOs	23			9,103,298				2,286
	Non-Corporate CDOs and other derivative transactions:
	Trust Preferred Securities (“TruPs”)	13			1,032,996				(35,652		)
	CDOs of commercial mortgage-backed securities (“CMBS”)	4			1,831,000				(99,255		)
	Other:
	Structured finance	5			552,466				(82,133		)
	Public finance	22			1,312,117				(42,497		)
	Total Non-Corporate CDOs and other derivative transactions	44			4,728,579				(259,537		)
	Assumed financial guaranty credit derivatives:
	Structured finance	26			159,774				(11,765		)
	Public finance	5			93,638				(503		)
	Total Assumed	31			253,412				(12,268		)
	Financial Guaranty VIE derivative liabilities (2)	1			77,686				(68,040		)
	Grand Total	101			$	14,162,975			$	(324,026	)
	______________________
	-1	Represents NIMS derivative assets related to consolidated NIMS VIEs and other purchased derivatives for which we do not have loss exposure that exceeds our net asset amount.
	-2	Represents the fair value of a CDS included in a VIE that we have consolidated. See Note 5 for more information on this transaction, the underlying reference securities and our maximum exposure to loss from this consolidated financial guaranty transaction. The assets in the VIE represent the only funds available to pay the CDS counterparty for amounts due under the contract; therefore, the notional exposure presented for the CDS is limited to the current trust assets.

Note_4_Fair_Value_of_Financial2

Note 4 - Fair Value of Financial Instruments (Tables)	9 Months Ended
	Sep. 30, 2013
Fair Value Disclosures [Abstract]	'
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]	'
	The following is a list of those assets and liabilities that are measured at fair value by hierarchy level as of September 30, 2013:
	(In millions)		Level I				Level II				Level III				Total
	Assets and Liabilities at Fair Value
	Investment Portfolio:
	U.S. government and agency securities		$	874			$	416.9			$	—			$	1,290.90
	State and municipal obligations		—				617.3				18.4				635.7
	Money market instruments		548.1				—				—				548.1
	Corporate bonds and notes		—				1,104.50				—				1,104.50
	Residential mortgage-backed securities (“RMBS”)		—				603.6				—				603.6
	CMBS		—				294.8				—				294.8
	Other ABS		—				203.2				1				204.2
	Hybrid securities		—				0.4				—				0.4
	Equity securities (1)		116.7				93.2				0.4				210.3
	Other investments (2)		—				2.5				80.2				82.7
	Total Investments at Fair Value (3)		1,538.80				3,336.40				100				4,975.20
	Derivative assets		—				12				8.9				20.9
	Other assets (4)		—				—				93.2				93.2
	Total Assets at Fair Value		$	1,538.80			$	3,348.40			$	202.1			$	5,089.30
	Derivative liabilities		$	—			$	—			$	344.9			$	344.9
	VIE debt (5)		—				—				104.2				104.2
	Total Liabilities at Fair Value		$	—			$	—			$	449.1			$	449.1
	______________________
	-1	Comprising broadly diversified domestic equity mutual funds included within Level I and various preferred and common stocks invested across numerous companies and industries included within Levels II and III.
	-2	Comprising TruPs ($0.9 million) and short-term certificates of deposit (“CDs”) ($1.6 million) included within Level II, and lottery annuities ($0.5 million) and a guaranteed investment contract held by a consolidated VIE ($79.7 million) within Level III.
	-3	Does not include fixed-maturities held to maturity ($0.4 million) and certain other invested assets ($49.6 million), primarily invested in limited partnerships, accounted for as cost-method investments and not measured at fair value.
	-4	Primarily comprising manufactured housing loan collateral related to two consolidated financial guaranty VIEs.
	-5	Comprising consolidated debt related to NIMS VIEs ($11.1 million) and amounts related to financial guaranty VIEs ($93.1 million).
	The following is a list of those assets and liabilities that are measured at fair value by hierarchy level as of December 31, 2012:
	(In millions)		Level I				Level II				Level III				Total
	Assets and Liabilities at Fair Value
	Investment Portfolio:
	U.S. government and agency securities		$	137.8			$	433.8			$	—			$	571.6
	State and municipal obligations		—				669				19				688
	Money market instruments		638				—				—				638
	Corporate bonds and notes		—				1,373.60				—				1,373.60
	RMBS		—				663.4				—				663.4
	CMBS		—				237.3				—				237.3
	Other ABS		—				252.4				1.7				254.1
	Foreign government securities		—				117.7				—				117.7
	Hybrid securities		—				211.9				—				211.9
	Equity securities (1)		98.9				166				1				265.9
	Other investments (2)		—				2.5				79				81.5
	Total Investments at Fair Value (3)		874.7				4,127.60				100.7				5,103.00
	Derivative assets		—				—				13.6				13.6
	Other assets (4)		—				—				99.2				99.2
	Total Assets at Fair Value		$	874.7			$	4,127.60			$	213.5			$	5,215.80
	Derivative liabilities		$	—			$	—			$	266.9			$	266.9
	VIE debt (5)		—				—				108.9				108.9
	Total Liabilities at Fair Value		$	—			$	—			$	375.8			$	375.8
	______________________
	-1	Comprising broadly diversified domestic equity mutual funds included within Level I and various preferred and common stocks invested across numerous companies and industries included within Levels II and III.
	-2	Comprising TruPs ($0.9 million) and short-term CDs ($1.6 million) included within Level II, and lottery annuities ($1.0 million) and a guaranteed investment contract held by a consolidated VIE ($78.0 million) within Level III.
	-3	Does not include fixed-maturities held to maturity ($0.7 million) and certain other invested assets ($48.7 million), primarily invested in limited partnerships, accounted for as cost-method investments and not measured at fair value.
	-4	Primarily comprising manufactured housing loan collateral related to two consolidated financial guaranty VIEs.
	-5	Comprising consolidated debt related to NIMS VIEs ($9.9 million) and amounts related to financial guaranty VIEs ($99.0 million).
Impact of Non-Performance Risk Fair Value Disclosure [Table Text Block]	'
	The following tables quantify the estimated impact of our non-performance risk on our derivative assets, derivative liabilities and net VIE liabilities (in aggregate by type) presented in our condensed consolidated balance sheets as of the dates indicated:
	(In basis points)	September 30,			December 31,			September 30,			December 31,
		2013			2012			2012			2011
	Radian Group’s five-year CDS spread	419			913			1,089			2,732
	(In millions)	Fair Value Liability				Impact of Radian				Fair Value (Asset) Liability
		before Consideration				Non-Performance Risk September 30, 2013				Recorded
		of Radian Non-Performance Risk September 30, 2013								30-Sep-13
	Product
	Corporate CDOs	$	19.8			$	22.1			$	(2.3	)
	Non-Corporate CDO-related (1)	493.1				221.3				271.8
	NIMS-related (2)	12.1				2.6				9.5
	Total	$	525			$	246			$	279
	(In millions)	Fair Value Liability				Impact of Radian				Fair Value  (Asset) Liability
		before Consideration				Non-Performance Risk				Recorded
		of Radian Non-Performance Risk				December 31, 2012				31-Dec-12
		December 31, 2012
	Product
	Corporate CDOs	$	98.8			$	101.6			$	(2.8	)
	Non-Corporate CDO-related (1)	696.6				509.3				187.3
	NIMS-related (2)	13				4.7				8.3
	Total	$	808.4			$	615.6			$	192.8
	_____________________
	-1	Includes the net fair value liability recorded within derivative assets and derivative liabilities, but does not include the net fair value liability of derivative assets or derivative liabilities within our consolidated VIEs, as Radian Group’s credit spread has no impact on the financial instruments in these VIEs.
	-2	Includes NIMS VIE debt and NIMS derivative assets.
Fair Value, Assets and Liabilites Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]	'
	The following is a rollforward of Level III assets and liabilities measured at fair value for the quarter ended September 30, 2013:
	(In millions)	Beginning				Realized and				Purchases				Sales				Issuances		Settlements				Transfers Into				Ending Balance at September 30, 2013
		Balance at				Unrealized																		(Out of)
		1-Jul-13				Gains (Losses)																		Level III (2)
						Recorded
						in Earnings  (1)
	Investments:
	State and municipal obligations	$	19.4			$	0.4			$	—			$	—			$	—	$	1.4			$	—			$	18.4
	Other ABS	1.2				—				—				—				—		0.2				—				1
	Equity securities	0.4				—				—				—				—		—				—				0.4
	Other investments	77.4				2.3				0.5				—				—		—				—				80.2
	Total Level III Investments	98.4				2.7				0.5				—				—		1.6				—				100
	NIMS derivative assets	1.6				—				—				—				—		—				—				1.6
	Other assets	96				2.7				—				—				—		5.5				—				93.2
	Total Level III Assets	$	196			$	5.4			$	0.5			$	—			$	—	$	7.1			$	—			$	194.8
	Derivative liabilities, net	$	343.6			$	11.4			$	—			$	—			$	—	$	(5.3	)		$	—			$	337.5
	VIE debt	106.8				(1.8		)		—				—				—		4.4				—				104.2
	Total Level III Liabilities, net	$	450.4			$	9.6			$	—			$	—			$	—	$	(0.9	)		$	—			$	441.7
	______________________
	-1	Includes unrealized gains (losses) for the quarter ended September 30, 2013, relating to assets and liabilities still held at September 30, 2013 as follows: $2.3 million for investments, $0.5 million for other assets, $5.9 million for derivative liabilities and $(1.0) million for VIE debt.
	-2	Transfers are recognized at the end of the period as the availability of market observed inputs change from period to period.
	The following is a rollforward of Level III assets and liabilities measured at fair value for the nine months ended September 30, 2013:
	(In millions)	Beginning				Realized and				Purchases				Sales				Issuances		Settlements				Transfers Into				Ending Balance at September 30, 2013
		Balance at				Unrealized																		(Out of)
		1-Jan-13				Gains (Losses)																		Level III (2)
						Recorded
						in Earnings  (1)
	Investments:
	State and municipal obligations	$	19			$	0.8			$	—			$	—			$	—	$	1.4			$	—			$	18.4
	Corporate bonds and notes	—				(0.1		)		2.7				—				—		—				(2.6		)	-3	—
	CMBS	—				—				3.1				3.1				—		—				—				—
	Other ABS	1.7				—				—				—				—		0.7				—				1
	Equity securities	1				—				—				0.6				—		—				—				0.4
	Other investments	79				0.4				1.3				0.1				—		0.4				—				80.2
	Total Level III Investments	100.7				1.1				7.1				3.8				—		2.5				(2.6		)		100
	NIMS derivative assets	1.6				—				—				—				—		—				—				1.6
	Other assets	99.2				11.1				—				—				—		17.1				—				93.2
	Total Level III Assets	$	201.5			$	12.2			$	7.1			$	3.8			$	—	$	19.6			$	(2.6	)		$	194.8
	Derivative liabilities, net	$	254.9			$	(69.7	)		$	—			$	—			$	—	$	(12.9	)		$	—			$	337.5
	VIE debt	108.9				(9.0		)		—				—				—		13.7				—				104.2
	Total Level III Liabilities, net	$	363.8			$	(78.7	)		$	—			$	—			$	—	$	0.8			$	—			$	441.7
	______________________
	-1	Includes unrealized gains (losses) for the nine months ended September 30, 2013, relating to assets and liabilities still held at September 30, 2013 as follows: $0.4 million for investments, $3.9 million for other assets, $(83.5) million for derivative liabilities and $(6.4) million for VIE debt.
	-2	Transfers are recognized at the end of the period as the availability of market observed inputs change from period to period.
	-3	During the period, pricing from a third-party pricing source became available that utilized observable inputs for individual instruments. As a result, these instruments were transferred out of Level III and into Level II.
	The following is a rollforward of Level III assets and liabilities measured at fair value for the quarter ended September 30, 2012:
	(In millions)	Balance at				Realized and				Purchases				Sales				Issuances		Settlements				Transfers Into				Ending
		1-Jul-12				Unrealized																		(Out of)				Balance at
						Gains (Losses)																		Level III (2)				30-Sep-12
						Recorded
						in Earnings  (1)
	Investments:
	State and municipal obligations	$	19.6			$	0.4			$	—			$	—			$	—	$	1.2			$	—			$	18.8
	Other ABS	4.8				—				—				—				—		0.5				(4.3		)	-3	—
	Equity securities	2				(0.4		)		—				0.1				—		—				0.1				1.6
	Other investments	76.5				(0.6		)		0.9				0.1				—		—				—				76.7
	Total Level III Investments	102.9				(0.6		)		0.9				0.2				—		1.7				(4.2		)		97.1
	NIMS derivative assets	1.7				—				0.1				—				—		—				—				1.8
	Other assets	100.7				6.1				—				—				—		6.2				—				100.6
	Total Level III Assets	$	205.3			$	5.5			$	1			$	0.2			$	—	$	7.9			$	(4.2	)		$	199.5
	Derivative liabilities, net	$	207.5			$	(41.0	)		$	—			$	—			$	—	$	(5.8	)		$	—			$	254.3
	VIE debt	107.8				(6.8		)		—				—				—		4.9				—				109.7
	Total Level III Liabilities, net	$	315.3			$	(47.8	)		$	—			$	—			$	—	$	(0.9	)		$	—			$	364
_______________________
-1	Includes unrealized gains (losses) for the quarter ended September 30, 2012, relating to assets and liabilities still held at September 30, 2012 as follows: $(1.1) million for investments, $3.5 million for other assets, $(48.0) million for derivative liabilities, and $(5.8) million for VIE debt.
-2	Transfers are recognized at the end of the period as the availability of market observed inputs change from period to period.
-3	During the period, pricing from a third-party pricing source became available that utilized observable inputs for individual instruments. As a result, these instruments were transferred out of Level III and into Level II.
The following is a rollforward of Level III assets and liabilities measured at fair value for the nine months ended September 30, 2012:
(In millions)	Balance at				Realized and				Purchases				Sales				Issuances		Settlements				Transfers Into				Ending
	1-Jan-12				Unrealized																		(Out of)				Balance at
					Gains (Losses)																		Level III (2)				30-Sep-12
					Recorded
					in Earnings  (1)
Investments:
State and municipal obligations	$	62.5			$	(3.6	)		$	—			$	—			$	—	$	12.3			$	(27.8	)	-3	$	18.8
RMBS	45.5				6.1				—				—				—		51.6				—				—
CMBS	35.4				(11.4		)		—				—				—		24				—				—
CDOs	5.5				0.8				—				—				—		6.3				—				—
Other ABS	2.9				0.8				5.2				—				—		4.6				(4.3		)	-3	—
Hybrid securities	4.8				0.1				0.1				4.9				—		—				(0.1		)	-3	—
Equity securities	0.8				0.1				—				0.1				—		—				0.8				1.6
Other investments	6.8				0.6				75.9				0.6				—		6				—				76.7
Total Level III Investments	164.2				(6.5		)		81.2				5.6				—		104.8				(31.4		)		97.1
NIMS derivative assets	1.6				—				0.2				—				—		—				—				1.8
Other assets	104				15.4				—				—				—		18.8				—				100.6
Total Level III Assets	$	269.8			$	8.9			$	81.4			$	5.6			$	—	$	123.6			$	(31.4	)		$	199.5
Derivative liabilities, net	$	110.6			$	(146.9	)		$	—			$	—			$	—	$	3.2			$	—			$	254.3
VIE debt	228.2				(111.2		)		—				—				—		229.7			-4	—				109.7
Total Level III Liabilities, net	$	338.8			$	(258.1	)		$	—			$	—			$	—	$	232.9			$	—			$	364
_______________________
-1	Includes unrealized gains (losses) for the nine months ended September 30, 2012, relating to assets and liabilities still held at September 30, 2012 as follows: $(0.1) million for investments, $7.3 million for other assets, $(188.3) million for derivative liabilities, and $(12.9) million for VIE debt.
-2	Transfers are recognized at the end of the period as the availability of market observed inputs change from period to period.
-3	During the period, pricing from a third-party pricing source became available that utilized observable inputs for individual instruments. As a result, these instruments were transferred out of Level III and into Level II.
-4	Primarily represents the settlement of our CDO of ABS.
Schedule of Additional Quantitative Information for Fair Value Measurement of Level III Assets and Liabilities [Table Text Block]	'
	The following table summarizes the significant unobservable inputs used in our recurring Level III fair value measurements as of September 30, 2013:
	(In millions)	Fair Value Net Asset (Liability) September 30, 2013 (1)				Valuation Technique		Unobservable Input		Range/ Weighted Average
	Level III Assets/Liabilities:
	State and municipal obligations	$	18.4			Discounted cash flow		Discount rate					8.4	%
								Expected loss					11.1	%
	Other investments	79.7				Discounted cash flow		Discount rate					1.6	%
	Corporate CDOs	2.3				Base correlation model		Radian correlation to corporate index					85	%
								Average credit spread		<0.1%		-	1.4	%
								Own credit spread (2)		1.4	%	-	5.3	%
	NIMS derivatives	1.6				Discounted cash flow		NIMS credit spread					43.6	%
								Own credit spread (2)					1.4	%
	CDOs of CMBS	(99.3		)		Discounted cash flow		Radian correlation to CMBS transaction index		72	%	-	85	%
								Own credit spread (2)		1.4	%	-	5.3	%
	TruPs CDOs	(35.7		)		Discounted cash flow		Principal recovery					72	%
								Principal recovery (stressed)					62	%
								Probability of conditional liquidity payment		0.8	%	-	10	%
								Own credit spread (2)		1.4	%	-	5.3	%
	TruPs - related VIE	(68.0		)		Discounted cash flow		Discount rate					13	%
	Other non-corporate CDOs and derivative transactions	(136.9		)		Risk-based model		Average life (in years)		<1		-	20
								Own credit spread (2)		1.4	%	-	5.3	%
	NIMS VIE	(11.1		)		Discounted cash flow		NIMS credit spread					43.6	%
								Own credit spread (2)		1.8	%	-	8.7	%
	______________________
	-1	Excludes certain assets and liabilities for which we do not develop quantitative unobservable inputs. The fair value estimates for these assets and liabilities are developed using third-party pricing information, generally without adjustment.
	-2	Represents the range of Radian Group’s CDS spread that a typical market participant might use in the valuation analysis based on the remaining term of the investment.
	The following table summarizes the significant unobservable inputs used in our recurring Level III fair value measurements as of December 31, 2012:
	(In millions)	Fair Value Net Asset (Liability) December 31, 2012 (1)				Valuation Technique		Unobservable Input		Range/ Weighted Average
	Level III Assets/Liabilities:
	State and municipal obligations	$	19			Discounted cash flow		Discount rate					8.8	%
								Expected loss					19	%
	Other investments	78				Discounted cash flow		Discount rate					1.9	%
	Corporate CDOs	2.8				Base correlation model		Radian correlation to corporate index					85	%
								Average credit spread		<0.1%		-	2.7	%
								Own credit spread (2)		8	%	-	9.1	%
	NIMS derivatives	1.6				Discounted cash flow		NIMS credit spread					44	%
								Own credit spread (2)					8.5	%
	CDOs of CMBS	(74.7		)		Discounted cash flow		Radian correlation to CMBS transaction index		72	%	-	85	%
								Own credit spread (2)		8	%	-	9.1	%
	TruPs CDOs	(11.1		)		Discounted cash flow		Principal recovery					65	%
								Principal recovery (stressed)					60	%
								Probability of conditional liquidity payment		0.8	%	-	36.7	%
								Own credit spread (2)		8	%	-	9.1	%
	TruPs - related VIE	(70.4		)		Discounted cash flow		Discount rate					13.4	%
	Other non-corporate CDOs and derivative transactions	(101.4		)		Risk-based model		Average life (in years)		<1		-	20
								Own credit spread (2)		8	%	-	9.1	%
	NIMS VIE	(9.9		)		Discounted cash flow		NIMS credit spread					43.7	%
								Own credit spread (2)		8.5	%	-	10.9	%
	______________________
	-1	Excludes certain assets and liabilities for which we do not develop quantitative unobservable inputs. The fair value estimates for these assets and liabilities are developed using third-party pricing information, generally without adjustment.
	-2	Represents the range of Radian Group’s CDS spread that a typical market participant might use in the valuation analysis based on the remaining term of the investment.
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 on our condensed consolidated balance sheets were as follows as of the dates indicated:
		September 30, 2013								December 31, 2012
	(In millions)	Carrying				Estimated				Carrying				Estimated
		Amount				Fair Value				Amount				Fair Value
	Assets:
	Fixed-maturities held to maturity	$	0.4			$	0.4		-1	$	0.7			$	0.7		-1
	Other invested assets	49.6				54.2			-1	48.7				57.4			-1
	Liabilities:
	Long-term debt (3)	921.9				1,496.50			-1	663.6				704.8			-1
	Non-derivative financial guaranty liabilities	165.8				234.6			-2	232.9				308.1			-2
	______________________
	-1	These estimated fair values would be classified in Level II of the fair value hierarchy.
	-2	These estimated fair values would be classified in Level III of the fair value hierarchy.
	-3	The carrying amount of long-term debt is net of the equity component of our convertible notes, which is accounted for under the accounting standard for convertible debt instruments that may be settled in cash upon conversion (including partial cash settlement). The fair value is estimated based on the quoted market prices for the same or similar issues. See Note 10 for further information.

Note_5_VIEs_Tables

Note 5 - VIEs (Tables)	9 Months Ended
	Sep. 30, 2013
Financial Guarantee Insurance Contracts and Credit Derivatives [Member]	'
Variable Interest Entity [Line Items]	'
Schedule of Variable Interest Entities [Table Text Block]	'
	The following tables provide a summary of our maximum exposure to losses, and the financial impact on our condensed consolidated balance sheets, our condensed consolidated statements of operations and our condensed consolidated statements of cash flows as of and for the periods indicated, as it relates to our consolidated and unconsolidated financial guaranty insurance contracts and credit derivative VIEs:
		Consolidated						Unconsolidated
	(In thousands)	September 30,			December 31, 2012			September 30,			December 31, 2012
		2013						2013
	Balance Sheet:
	Other invested assets	$	79,749		$	78,006		$	—		$	—
	Derivative assets	—			—			1,176			3,201
	Premiums receivable	—			—			2,290			2,859
	Other assets	93,375			99,337			—			—
	Unearned premiums	—			—			1,960			2,513
	Reserve for losses and LAE	—			—			13,977			14,376
	Derivative liabilities	68,040			70,467			259,261			175,781
	VIE debt—at fair value	93,109			98,983			—			—
	Accounts payable and accrued expenses	285			366			—			—
	Maximum exposure (1)	123,849			120,939			4,748,667			5,096,718
	______________________
	-1	The difference between the carrying amounts of the net asset/liability position and maximum exposure related to VIEs is primarily due to the difference between the face amount of the obligation and the recorded fair values, which include an adjustment for our non-performance risk, as applicable. For those VIEs that have recourse to our general credit, the maximum exposure is based on the net par amount of our insured obligation. For any VIEs that do not have recourse to our general credit, the maximum exposure is generally based on the recorded net assets of the VIE, as of the reporting date.
		Consolidated						Unconsolidated
		Nine Months Ended September 30,						Nine Months Ended September 30,
	(In thousands)	2013			2012			2013			2012
	Statement of Operations:
	Premiums earned	$	—		$	—		$	872		$	1,286
	Net investment income	1,338			2,903			—			—
	Net gain (loss) on investments	405			(3,128		)	—			—
	Change in fair value of derivative	513			1,253			(82,069		)	(166,404		)
	instruments—gain (loss)
	Net gain (loss) on other financial	3,377			(91,274		)	—			—
	instruments
	Provision for losses—(decrease) increase	—			—			(208		)	5,854
	Other operating expenses	1,469			1,802			—			—
	Net Cash Inflow (Outflow)	333			(134,600		)	4,133			(70,486		)
NIMS VIEs [Member]	'
Variable Interest Entity [Line Items]	'
Schedule of Variable Interest Entities [Table Text Block]	'
	The following tables provide a summary of our maximum exposure to losses, and the financial impact on our condensed consolidated balance sheets, our condensed consolidated statements of operations and our condensed consolidated statements of cash flows as of and for the periods indicated, as it relates to our consolidated NIMS VIEs:
	(In thousands)	September 30,			December 31,
		2013			2012
	Balance Sheet:
	Derivative assets	$	1,577		$	1,585
	VIE debt—at fair value	11,109			9,875
	Maximum exposure (1)	14,061			14,061
	______________________
	-1	The difference between the carrying amounts of the net asset/liability position and maximum exposure related to VIEs is primarily due to the difference between the face amount of the obligation and the recorded fair values, which include an adjustment for our non-performance risk, as applicable.
		Nine Months Ended September 30,
	(In thousands)	2013			2012
	Statement of Operations:
	Net investment income	$	178		$	427
	Change in fair value of derivative instruments—gain	—			3
	Net loss on other financial instruments	(1,270		)	(4,500		)
	Net Cash Inflow	149			4,301

Note_6_Investments_Tables

Note 6 - Investments (Tables)	9 Months Ended
	Sep. 30, 2013
Investments [Abstract]	'
Total Debt And Equity Securities [Table Text Block]	'
	Securities within our investment portfolio determined to be “held to maturity” and “available for sale” consisted of the following as of the dates indicated:
		September 30, 2013
	(In thousands)	Amortized		Fair Value		Gross		Gross
		Cost				Unrealized		Unrealized
						Gains		Losses
	Fixed-maturities held to maturity:
	Bonds and notes:
	State and municipal obligations	$	428	$	421	$	—	$	7
		$	428	$	421	$	—	$	7
	Fixed-maturities available for sale:
	U.S. government and agency securities	$	3,465	$	3,714	$	249	$	—
	State and municipal obligations	12,309		11,792		22		539
	Corporate bonds and notes	7,463		7,493		457		427
	RMBS	74,187		75,491		1,304		—
	Other investments	395		422		27		—
		$	97,819	$	98,912	$	2,059	$	966
	Equity securities available for sale (1)	$	78,106	$	121,868	$	43,762	$	—
	Total debt and equity securities	$	176,353	$	221,201	$	45,821	$	973
	______________________
	-1	Comprising broadly diversified domestic equity mutual funds ($116.7 million fair value) and various preferred and common stocks invested across numerous companies and industries ($5.2 million fair value) that are carried at cost.
		December 31, 2012
	(In thousands)	Amortized		Fair Value		Gross		Gross
		Cost				Unrealized		Unrealized
						Gains		Losses
	Fixed-maturities held to maturity:
	Bonds and notes:
	State and municipal obligations	$	679	$	676	$	3	$	6
		$	679	$	676	$	3	$	6
	Fixed-maturities available for sale:
	U.S. government and agency securities	$	4,969	$	5,305	$	336	$	—
	State and municipal obligations	17,922		17,995		116		43
	Corporate bonds and notes	15,618		16,369		1,110		359
	RMBS	50		51		3		2
	Other investments	922		976		54		—
		$	39,481	$	40,696	$	1,619	$	404
	Equity securities available for sale (1)	$	88,260	$	112,139	$	23,879	$	—
	Total debt and equity securities	$	128,420	$	153,511	$	25,501	$	410
	______________________
	-1	Comprising broadly diversified domestic equity mutual funds ($98.9 million fair value) and various preferred and common stocks invested across numerous companies and industries ($13.2 million fair value) that are carried at cost.
Trading Securities (and Certain Trading Assets) [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,
		2013		2012
	Trading securities:
	U.S. government and agency securities	$	413,169	$	428,519
	State and municipal obligations	623,899		669,975
	Corporate bonds and notes	1,097,034		1,357,175
	RMBS	528,103		663,307
	CMBS	294,752		237,294
	Other ABS	204,187		254,102
	Foreign government securities (1)	—		117,686
	Hybrid securities	417		211,944
	Equity securities	88,435		153,722
	Other investments	938		898
	Total	$	3,250,934	$	4,094,622
	_______________________
	-1	As of September 30, 2013, there were no foreign government securities in our investment portfolio. We sold our investment in foreign government securities during the first quarter of 2013, as our market view of these investments changed, and their performance did not meet our expectations.
Schedule Of Unrealized Losses [Table Text Block]	'
	The following tables show the gross unrealized losses and fair value of our securities deemed “available for sale” and “held to maturity,” aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position, as of the dates indicated:
	September 30, 2013:		Less Than 12 Months					12 Months or Greater						Total
	($ in thousands)
	Description of Securities		# of	Fair Value		Unrealized		# of		Fair Value		Unrealized		# of	Fair Value		Unrealized
			securities			Losses		securities				Losses		securities			Losses
	State and municipal obligations		—	$	—	$	—	3		$	5,506	$	546	3	$	5,506	$	546
	Corporate bonds and notes		—	—		—		2		2,976		427		2	2,976		427
	Total		—	$	—	$	—	5		$	8,482	$	973	5	$	8,482	$	973
	December 31, 2012:		Less Than 12 Months					12 Months or Greater						Total
	($ in thousands)
	Description of Securities		# of	Fair Value		Unrealized		# of		Fair Value		Unrealized		# of	Fair Value		Unrealized
			securities			Losses		securities				Losses		securities			Losses
	State and municipal obligations		—	$	—	$	—	2		$	6,004	$	49	2	$	6,004	$	49
	Corporate bonds and notes		—	—		—		6		5,329		359		6	5,329		359
	RMBS		1	31		2		—		—		—		1	31		2
	Total		1	$	31	$	2	8		$	11,333	$	408	9	$	11,364	$	410
Investments Classified by Contractual Maturity Date [Table Text Block]	'
	The contractual maturities of fixed-maturity investments are as follows:
		September 30, 2013
		Held to Maturity				Available for Sale
	(In thousands)	Amortized		Fair		Amortized		Fair
		Cost		Value		Cost		Value
	Due in one year or less (1)	$	—	$	—	$	3,483	$	3,137
	Due after one year through five years (1)	120		120		5,249		5,496
	Due after five years through ten years (1)	—		—		639		654
	Due after ten years (1)	308		301		14,261		14,134
	RMBS (2)	—		—		74,187		75,491
	Total	$	428	$	421	$	97,819	$	98,912
	______________________
	-1	Actual maturities may differ as a result of calls before scheduled maturity.
	-2	RMBS are shown separately given their varying maturity dates.

Note_7_Reinsurance_Tables

Note 7 - Reinsurance (Tables)	9 Months Ended
	Sep. 30, 2013
Reinsurance [Abstract]	'
Reinsurance, Premiums Written and Earned [Table Text Block]	'
	The effect of assumed or ceded reinsurance in our mortgage insurance and financial guaranty businesses on net premiums written and earned is as follows:
		Three Months Ended						Nine Months Ended September 30,
		September 30,
	(In thousands)	2013			2012			2013			2012
	Net premiums written-insurance:
	Direct	268,886			232,086			784,180			650,188
	Assumed	(126		)	(918		)	(10,729		)	(89,434		)
	Ceded	(17,918		)	(21,891		)	(64,195		)	(91,867		)
	Net premiums written-insurance	$	250,842		$	209,277		$	709,256		$	468,887
	Net premiums earned-insurance:
	Direct	$	228,162		$	201,988		$	660,687		$	590,016
	Assumed	1,943			3,408			10,573			(5,573		)
	Ceded	(18,121		)	(14,433		)	(53,564		)	(39,336		)
	Net premiums earned-insurance	$	211,984		$	190,963		$	617,696		$	545,107
Initial Quota Share Reinsurance Transaction [Member]	'
Reinsurance Transaction Details [Line Items]	'
Reinsurance Transaction Details [Table Text Block]	'
	The following table shows the amounts related to the Initial QSR Transaction as of the periods indicated:
		Three Months Ended						Nine Months Ended September 30,
		September 30,
	(In thousands)	2013			2012			2013			2012
	Ceded premiums written	$	5,551		$	16,378		$	17,573		$	41,855
	Ceded premiums earned	7,216			5,291			22,711			8,389
	Ceding commissions written	1,388			4,095			4,393			10,464
Second Quota Share Reinsurance Transaction [Member]	'
Reinsurance Transaction Details [Line Items]	'
Reinsurance Transaction Details [Table Text Block]	'
	The following table shows the amounts related to the Second QSR Transaction as of the periods indicated:
	(In thousands)	Three Months Ended September 30, 2013			Nine Months Ended September 30, 2013
	Ceded premiums written	$	8,233		$	32,253
	Ceded premiums earned	5,099			12,220
	Ceding commissions written	2,882			11,289

Note_8_Losses_and_LAE_Tables

Note 8 - Losses and LAE (Tables)	9 Months Ended
	Sep. 30, 2013
Insurance Loss Reserves [Abstract]	'
Loss Reserves By Segment [Table Text Block]	'
	Our reserve for losses and LAE, as of the dates indicated, consisted of:
	(In thousands)	September 30,			December 31,
		2013			2012
	Mortgage insurance reserves	$	2,314,785		$	3,083,608
	Financial guaranty reserves	32,094			66,328
	Total reserve for losses and LAE	$	2,346,879		$	3,149,936
Schedule of Liability for Unpaid Claims and Claims Adjustment Expense [Table Text Block]	'
	The following table presents information relating to our mortgage insurance reserves for losses, including our estimate of defaults incurred but not reported (“IBNR”), and LAE as of the dates indicated:
		Three Months Ended						Nine Months Ended September 30,
		September 30,
	(In thousands)	2013			2012			2013			2012
	Mortgage Insurance
	Balance at beginning of period	$	2,690,861		$	3,155,343		$	3,083,608		$	3,247,900
	Less reinsurance recoverables (1)	58,427			97,845			83,238			151,569
	Balance at beginning of period, net of reinsurance recoverables	2,632,434			3,057,498			3,000,370			3,096,331
	Add losses and LAE incurred in respect of default notices reported and unreported in:
	Current year (2)	140,015			248,806			477,155			686,080
	Prior years	11,997			(77,001		)	(56,777		)	(71,468		)
	Total incurred	152,012			171,805			420,378			614,612
	Deduct paid claims and LAE related to:
	Current year (2)	21,334			2,912			21,483			3,185
	Prior years	498,002			269,486			1,134,155			750,853
	Total paid	519,336			272,398			1,155,638			754,038
	Balance at end of period, net of reinsurance recoverables	2,265,110			2,956,905			2,265,110			2,956,905
	Add reinsurance recoverables (1)	49,675			89,801			49,675			89,801
	Balance at end of period	$	2,314,785		$	3,046,706		$	2,314,785		$	3,046,706
	_________________________
	-1	Related to ceded losses on captive reinsurance transactions, capital markets reinsurance transactions (“Smart Home”) and QSR transactions.
	-2	Related to underlying defaulted loans with a most recent date of default notice 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.
Rescissions And Denials [Table Text Block]	'
	The following table illustrates the amount of first-lien claims submitted to us for payment that were rescinded or denied, for the periods indicated, net of any reinstatements of previously rescinded policies or denied claims within each period:
		Three Months Ended						Nine Months Ended September 30,
		September 30,
	(In millions)	2013			2012			2013			2012
	Rescissions	$	21.6		$	95.8		$	56.5		$	193.7
	Denials	4.1			131.9			131.3			537.1
	Total first-lien claims submitted for payment that were rescinded or denied (1)	$	25.7		$	227.7		$	187.8		$	730.8
	______________________
	-1	Includes an amount related to a small number of submitted claims that were subsequently withdrawn by the insured.
Projected Rescission and Denial Rates [Table Text Block]	'
	The following table shows the cumulative rescission/denial rates in our total first-lien portfolio, net of both actual and expected reinstatements, as of September 30, 2013, with respect to claims received in each quarter indicated below:
	Claim		Projected Net Cumulative Rescission/Denial Rate for Each Quarter (1)	Percentage of
	Received			Total Claims Resolved (2)
	Quarter
	Q1 2011		20.40%	99%
	Q2 2011		25.40%	99%
	Q3 2011		30.90%	99%
	Q4 2011		27.00%	99%
	Q1 2012		23.50%	98%
	Q2 2012		20.70%	97%
	Q3 2012		17.80%	89%
	Q4 2012		16.00%	78%
	Q1 2013		16.40%	57%
	______________________
	-1	Projected net cumulative rescission/denial rates represent the ratio of claims rescinded or denied to claims received (by claim count). Rescissions and denials are net of actual reinstatements, plus our current estimate for expected reinstatements of previously rescinded policies or denied claims (excluding certain potential reinstatements we are in the process of discussing with servicers). These projected amounts represent the cumulative rates for each quarter as of September 30, 2013. Until all of the claims received during the periods shown have been internally resolved, the rescission/denial rates for each quarter will be subject to change; these rates also will remain subject to change based on differences between estimated and actual reinstatements of previously rescinded policies or denied claims.
	-2	The percentage of claims resolved for each quarter presented in the table above represents the number of claims that have been internally resolved as a percentage of the total number of claims received for that specific quarter. A claim is considered internally resolved when it is either paid or it is concluded that the claim should be denied or rescinded, though such denials and rescissions could be challenged and potentially reinstated or overturned. For the second and third quarters of 2013, a significant portion of claims received for those quarters have not been internally resolved; therefore, we do not believe the projected net cumulative rescission/denial rates for those periods are presently meaningful.

Note_9_Financial_Guaranty_Insu1

Note 9 - Financial Guaranty Insurance Contracts (Tables)	9 Months Ended
	Sep. 30, 2013
Financial Guaranty Insurance Contracts [Abstract]	'
Schedule of Insured Financial Obligations with Credit Deterioration [Table Text Block]	'
	The following table includes information as of September 30, 2013 regarding our financial guaranty claim liabilities on non-derivative transactions, segregated by the surveillance categories that we use in monitoring the risks related to these contracts:
		Surveillance Categories
	($ in thousands)	Performing			Special			Intensified			Case			Total
					Mention			Surveillance			Reserve
	Number of policies	6			106			72			85			269
	Remaining weighted-average contract period (in years)	22			18			20			19			19
	Insured contractual payments outstanding:
	Principal	$	1,721		$	707,897		$	622,049		$	112,393		$	1,444,060
	Interest	156			382,859			322,434			30,267			735,716
	Total	$	1,877		$	1,090,756		$	944,483		$	142,660		$	2,179,776
	Gross claim liability	$	1		$	20,305		$	206,597		$	34,773		$	261,676
	Less:
	Gross potential recoveries	—			6,744			254,152			55,265			316,161
	Discount, net	—			699			(97,106		)	(1,955		)	(98,362		)
	Net claim liability/(asset) (prior to reduction for unearned premium)	$	1		$	12,862		$	49,551		$	(18,537	)	$	43,877
	Unearned premium revenue	$	5		$	15,298		$	10,724		$	—		$	26,027
	Net claim liability/(asset) reported in the balance sheet	$	—		$	6,398		$	42,677		$	(18,537	)	$	30,538
	Reinsurance recoverables	$	—		$	—		$	—		$	—		$	—
Adjustments to Premiums Earned Financial Guaranty Contracts [Table Text Block]	'
	Premiums earned were affected by the following for the periods indicated:
		Three Months Ended						Nine Months Ended September 30,
		September 30,
	(In thousands)	2013			2012			2013			2012
	Refundings	$	6,979		$	7,322		$	22,020		$	26,029
	Recaptures/commutations	—			—			(2,447		)	(16,269		)
	Unearned premium acceleration upon establishment of case reserves	—			669			69			669
	Reinsurance agreements	—			—			—			(5,995		)
	Foreign exchange revaluation, gross of commissions	112			616			(975		)	(153		)
	Adjustments to installment premiums, gross of commissions	(155		)	(2,390		)	2,527			(2,273		)
	Total adjustment to premiums earned	$	6,936		$	6,217		$	21,194		$	2,008
Financial Guarantee Insurance Contracts Future Premium Revenue to be Recognized [Table Text Block]	'
	The following table shows the expected contractual premium revenue from our existing financial guaranty portfolio, assuming no prepayments (“refundings”) of any financial guaranty obligations, as of September 30, 2013:
	(In thousands)	Ending Net			Unearned			Accretion			Total
		Unearned			Premium						Premium
		Premiums			Amortization						Revenue
	Fourth Quarter 2013	$	192,191		$	8,414		$	210		$	8,624
	2014	168,705			23,486			794			24,280
	2015	152,202			16,503			727			17,230
	2016	138,307			13,895			683			14,578
	2017	125,425			12,882			624			13,506
	2013-2017	125,425			75,180			3,038			78,218
	2018-2022	71,950			53,475			2,381			55,856
	2023-2027	35,983			35,967			1,485			37,452
	2028-2032	15,223			20,760			924			21,684
	After 2032	—			15,223			1,075			16,298
	Total	$	—		$	200,605		$	8,903		$	209,508
Schedule of Liability for Unpaid Claims and Claims Adjustment Expense [Table Text Block]	'
	The following table shows the significant components of changes in our financial guaranty claim liability for the three and nine months ended September 30, 2013 and 2012, excluding reserves related to our trade credit reinsurance and surety business of $1.6 million and $2.3 million at September 30, 2013 and September 30, 2012, respectively, which are excluded from the accounting standard regarding accounting for financial guaranty insurance contracts by insurance enterprises.
		Three Months Ended						Nine Months Ended September 30,
		September 30,
	(In thousands)	2013			2012			2013			2012
	Claim liability at beginning of period	$	23,611		$	92,645		$	64,291		$	60,550
	Incurred losses and LAE:
	(Decrease) increase in gross claim liability	(28,486		)	37,559			(56,477		)	199,257
	Decrease (increase) in gross potential recoveries	8,896			(69,624		)	35,339			(261,339		)
	Decrease in discount	24,075			36,312			30,208			102,457
	Decrease (increase) in unearned premiums	926			225			213			(1,683		)
	Incurred losses and LAE	5,411			4,472			9,283			38,692
	Deduct paid losses and LAE:
	Current years	70			(334		)	103			—
	Prior years	(1,586		)	26,843			42,933			28,634
	Paid losses and LAE:	(1,516		)	26,509			43,036			28,634
	Claim liability at end of period	$	30,538		$	70,608		$	30,538		$	70,608
	Components of incurred losses and LAE:
	Claim liability established in current period	$	866		$	8,750		$	1,249		$	8,801
	Changes in existing claim liabilities	4,545			(4,278		)	8,034			29,891
	Total incurred losses and LAE	$	5,411		$	4,472		$	9,283		$	38,692
	Components of decrease in discount:
	Decrease in discount related to net claim liabilities established in current period	$	268		$	36,094		$	103		$	101,776
	Decrease in discount related to existing net claim liabilities	23,807			218			30,105			681
	Total decrease in discount	$	24,075		$	36,312		$	30,208		$	102,457
Schedule or Description of Weighted Average Discount Rate [Table Text Block]	'
	The weighted-average risk-free rates used to discount the gross claim liability and gross potential recoveries were as follows as of the dates indicated:
	30-Sep-13	3	%
	31-Dec-12	2	%
	30-Sep-12	1.94	%
	31-Dec-11	2.8	%

Note_10_LongTerm_Debt_Tables

Note 10 - Long-Term Debt (Tables)	9 Months Ended
	Sep. 30, 2013
Long-term Debt, Unclassified [Abstract]	'
Schedule of Long-term Debt Instruments [Table Text Block]	'
	The carrying value of our long-term debt at September 30, 2013 and December 31, 2012 was as follows:
	(In thousands)		September 30,			December 31,
			2013			2012
	5.63%	Senior Notes due 2013	$	—		$	79,449
	5.38%	Senior Notes due 2015	54,479			249,868
	9.00%	Senior Notes due 2017	191,376			—
	3.00%	Convertible Senior Notes due 2017 (1)	348,735			334,254
	2.25%	Convertible Senior Notes due 2019 (2)	327,337			—
		Total long-term debt	$	921,927		$	663,571
	______________________
	-1	The principal amount of these notes is $450 million.
	-2	The principal amount of these notes is $400 million.
Schedule of Liability and Equity Components of Convertible Debt [Table Text Block]	'
	The convertible notes are reflected on our condensed consolidated balance sheets as follows:
	(In thousands)	September 30,
		2013
	Liability component:
	Principal	$	400,000
	Less: debt discount, net (1)	(72,663		)
	Net carrying amount	$	327,337
	Equity component (net of tax impact) (2) (3)	$	77,026
	______________________
	-1	Included within long-term debt and is being amortized over the life of the convertible notes.
	-2	Included within additional paid-in capital, net of related issuance costs.
	-3	A full valuation allowance has been recorded against the deferred income tax impact.
Schedule of Interest Expense Recognized Related to Convertible Debt [Table Text Block]	'
	The following table sets forth total interest expense recognized related to the convertible notes for the periods indicated:
	(In thousands)	Three Months Ended September 30, 2013			Nine Months Ended September 30, 2013
	Contractual interest expense	$	2,250		$	5,175
	Amortization of debt issuance costs	311			711
	Amortization of debt discount	2,801			6,378
	Total interest expense	$	5,362		$	12,264
	Effective interest rate of the liability component	6.25		%	6.25		%

Note_11_Accumulated_Other_Comp1

Note 11 - Accumulated Other Comprehensive Income (Tables)	9 Months Ended
	Sep. 30, 2013
Schedule of Accumulated Other Comprehensive Income [Abstract]	'
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]	'
	The following table shows the rollforward of accumulated other comprehensive income for the periods indicated:
			Three Months Ended September 30, 2013									Nine Months Ended September 30, 2013
	(In thousands)		Before tax			Tax effect			Net of tax			Before tax			Tax effect			Net of tax
	Balance at beginning of period		$	37,450		$	12,984		$	24,466		$	24,904		$	8,809		$	16,095
	Other comprehensive income:
	Unrealized gains on investments:
	Unrealized holding gains arising during the period		7,659			2,681			4,978			21,422			7,498			13,924
	Less: Reclassification adjustment for net gains included in net loss (1)		444			140			304			1,661			782			879
	Net unrealized gains on investments		7,215			2,541			4,674			19,761			6,716			13,045
	Other comprehensive income		7,215			2,541			4,674			19,761			6,716			13,045
	Balance at end of period		$	44,665		$	15,525		$	29,140		$	44,665		$	15,525		$	29,140
			Three Months Ended September 30, 2012									Nine Months Ended September 30, 2012
	(In thousands)		Before tax			Tax effect			Net of tax			Before tax			Tax effect			Net of tax
	Balance at beginning of period		$	22,682		$	4,364		$	18,318		$	12,039		$	639		$	11,400
	Other comprehensive income (loss):
	Foreign currency translation adjustments:
	Unrealized foreign currency translation adjustment		1			—			1			(11		)	(4		)	(7		)
	Less: Reclassification adjustment		—			—			—			—			—			—
	Net foreign currency translation adjustments		1			—			1			(11		)	(4		)	(7		)
	Unrealized gains (losses) on investments:
	Unrealized holding (losses) gains arising during the period		(2,489		)	(871		)	(1,618		)	21,811			7,634			14,177
	Less: Reclassification adjustment for net (losses) gains included in net loss (1)		(6,100		)	(4,911		)	(1,189		)	7,545			(135		)	7,680
	Net unrealized gains (losses) on investments		3,611			4,040			(429		)	14,266			7,769			6,497
	Other comprehensive income (loss)		3,612			4,040			(428		)	14,255			7,765			6,490
	Balance at end of period		$	26,294		$	8,404		$	17,890		$	26,294		$	8,404		$	17,890
	______________________
	-1	Included in net (losses) gains on investments on our condensed consolidated statements of operations.

Note_13_Statutory_Information_1

Note 13 - Statutory Information (Tables)	9 Months Ended
	Sep. 30, 2013
Statutory Information [Abstract]	'
Statutory Accounting Practices Disclosure [Table Text Block]	'
	Radian Guaranty’s statutory net income (loss) and statutory policyholders’ surplus as of or for the periods indicated were as follows:
	(In millions)	As of and for the Nine Months Ended September 30, 2013			As of and for the Year Ended December 31, 2012
	Statutory net income (loss)	$	10.7		$	(175.9	)
	Statutory surplus	1,239.10			926
	Contingency reserve	17.2			—
Risk To Capital Calculation [Table Text Block]	'
	The components of Radian Guaranty’s risk-to-capital calculation appear in the table below. For purposes of the risk-to-capital requirements imposed by certain states, statutory capital is defined as the sum of statutory policyholders’ surplus (i.e., statutory-basis capital and surplus) plus statutory contingency reserves.
		September 30,			December 31, 2012
		2013
	($ in millions)
	RIF, net (1)	$	24,899.40		$	19,226.70
	Statutory surplus	$	1,239.10		$	926
	Statutory contingency reserve	17.2			—
	Statutory capital	$	1,256.30		$	926
	Risk-to-capital	19.8		:1	20.8		:1
	______________________
	-1	RIF, net excludes risk ceded through reinsurance contracts and RIF on defaulted loans.

Note_14_Selected_Financial_Inf1

Note 14 - Selected Financial Information of Registrant - Radian Group (Tables)	9 Months Ended
	Sep. 30, 2013
Condensed Financial Information of Parent Company Only Disclosure [Abstract]	'
Selected Financial Information Of Registrant [Table Text Block]	'
	(In thousands)	September 30,		December 31, 2012
		2013
	Investment in subsidiaries, at equity in net assets	$	1,356,140	$	1,234,229
	Total assets	2,051,620		1,550,619
	Long-term debt	921,927		663,571
	Total liabilities	1,157,100		814,294
	Total stockholders’ equity	894,520		736,325
	Total liabilities and stockholders’ equity	2,051,620		1,550,619

Note_1_Condensed_Consolidated_1

Note 1 - Condensed Consolidated Financial Statements - Basis of Presentation and Business Overview Antidilutive Common Stock Equivalents (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]	'	'	'	'
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	43,289,967	2,479,966	43,289,967	5,890,581

Note_1_Condensed_Consolidated_2

Note 1 - Condensed Consolidated Financial Statements - Basis of Presentation and Business Overview Capital and Liquidity (Details) (USD $)

9 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

1 Months Ended

9 Months Ended

1 Months Ended

7 Months Ended

1 Months Ended

1 Months Ended

3 Months Ended

9 Months Ended

9 Months Ended

12 Months Ended

3 Months Ended

9 Months Ended

12 Months Ended

18 Months Ended

20 Months Ended

21 Months Ended

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Jul. 31, 2013

Jan. 31, 2013

Feb. 28, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Mar. 31, 2013

Sep. 30, 2013

Jan. 31, 2013

Sep. 30, 2013

Mar. 31, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Dec. 31, 2012

Sep. 30, 2013

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Sep. 30, 2013

Dec. 31, 2011

Jul. 12, 2013

Aug. 30, 2013

Sep. 30, 2013

Jul. 31, 2013

Sep. 30, 2013

Aug. 29, 2015

Sep. 30, 2013

segment

Five Point Three Seven Five Percent Senior Notes due 2015 [Member]

Nine Percent Notes Due 2017 [Member]

Two Point Two Five Percent Convertible Notes Due 2019 [Member]

Debt Exchange 2013 [Member]

Debt Exchange 2013 [Member]

Radian Guaranty [Member]

Radian Guaranty [Member]

Radian Asset Assurance [Member]

Radian Asset Assurance [Member]

Radian Asset Assurance [Member]

Radian Asset Assurance [Member]

Parent Company

Parent Company

Common Stock

Common Stock

Reinsurance [Member]

Convertible Debt [Member]

Convertible Debt [Member]

Convertible Debt [Member]

Mortgage Insurance Segment

Mortgage Insurance Segment

Mortgage Insurance Segment

Mortgage Insurance Segment

Mortgage Insurance Segment

Mortgage Insurance Segment

Mortgage Insurance Segment

Mortgage Insurance Segment

Mortgage Insurance Segment

Mortgage Insurance Segment

Mortgage Insurance Segment

Mortgage Insurance Segment

Mortgage Insurance Segment

Mortgage Insurance Segment

Mortgage Insurance Segment

Minimum [Member]

Minimum [Member]

Maximum [Member]

Five Point Three Seven Five Percent Senior Notes due 2015 [Member]

Nine Percent Notes Due 2017 [Member]

2012 FGIC Commutation [Member]

Strategic Capital and Liquidity Initiatives [Member]

CDO Termination [Member]

Corporate Expenses and Interest Payments Due Within Twelve Months [Member]

Stock Offering 2013 [Member]

Stock Offering 2013 [Member]

Radian Asset Assurance [Member]

Two Point Two Five Percent Convertible Notes Due 2019 [Member]

Debt Offering 2013 [Member]

Debt Offering 2013 [Member]

Less Than [Member]

Primary Mortgage Product [Member]

Primary Mortgage Product [Member]

First Lien Position [Member]

First Lien Position [Member]

First Lien Position [Member]

First Lien Position [Member]

First Lien Position [Member]

First Lien Position [Member]

First Lien Position [Member]

Mortgage Insurance Segment

counterparty

2012 FGIC Commutation [Member]

Two Point Two Five Percent Convertible Notes Due 2019 [Member]

Two Point Two Five Percent Convertible Notes Due 2019 [Member]

Primary Mortgage Product [Member]

Primary Mortgage Product [Member]

Primary Mortgage Product [Member]

Primary Mortgage Product [Member]

Primary Mortgage Product [Member]

Primary Mortgage Product [Member]

Primary Mortgage Product [Member]

First Lien Position [Member]

contract

2013 Freddie Mac Agreement [Member]

2013 Freddie Mac Agreement [Member]

2013 Freddie Mac Agreement [Member]

2013 Freddie Mac Agreement [Member]

2013 Freddie Mac Agreement [Member]

2013 Freddie Mac Agreement [Member]

2013 Freddie Mac Agreement [Member]

Primary Mortgage Product [Member]

loan

loan

2013 Freddie Mac Agreement [Member]

Scenario, Forecast [Member]

Risk to Capital Line Items [Line Items]

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Equity Method Investment, Ownership Percentage

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20.00%

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Business Overview [Abstract]

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Number of Operating Segments

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Mortgage Insurance [Abstract]

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Private Mortage Insurance Protects Lenders For Loans Made With This Maximum Downpayment Percentage

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20.00%

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Percentage Of Primary Insurance On Domestic First-Lien Mortgages To Total First Lien Insurance Risk In Force

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95.70%

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95.70%

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Total Risk In Force

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$41,000,000,000

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$41,000,000,000

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Percentage Of Pool Insurance On Domestic First-Lien Mortgages To Total First Lien Insurance Risk In Force

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4.10%

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4.10%

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NonTraditional Risk In Force

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115,000,000

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115,000,000

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Percentage Of Non-Traditional RIF To Total RIF

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1.00%

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Business Conditions [Abstract]

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Percentage Decrease In New Defaults

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19.00%

22.00%

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Concentration Risk, Percentage

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43.00%

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43.00%

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55.00%

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Maximum Loan To Value Percentage For G.S.E. Acquired Loans

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80.00%

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80.00%

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'

'

Minimum Percentage Of The Loans In Excess Of An 80% L.T.V. Which Must Be Retained By The Mortgage Originator Or Seller

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

10.00%

'

10.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Capital Preservation and Liquidity Management Initiatives [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Contingency Reserve Release

'

'

'

'

'

'

'

'

'

'

6,700,000

61,100,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Reduction In Net Par Outstanding

'

'

'

'

'

'

'

'

'

'

'

'

3,400,000,000

'

'

'

'

822,200,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number Of Our Credit Derivative Counterparties That Excercised Their Termination Rights

'

'

'

'

'

'

'

'

'

'

'

'

4

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of Corporate CDOs Terminated

'

'

'

'

'

'

'

'

'

'

'

'

9

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Payment of Dividend by Subsidiary to Parent

'

'

'

'

'

'

'

'

'

36,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Debt Instrument, Interest Rate, Stated Percentage

'

'

5.38%

9.00%

2.25%

5.38%

9.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

2.25%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Long-term Debt, Gross

'

'

'

'

'

'

195,500,000

'

'

'

'

'

'

'

'

'

'

'

400,000,000

400,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Proceeds from Issuance of Long-term Debt

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

389,800,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Stock Issued During Period, Shares, New Issues

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

39,100,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Sale of Stock, Price Per Share

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$8

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Proceeds from Issuance of Common Stock

299,410,000

0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

299,400,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Mortgage Loans on Real Estate, Number of Loans

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

25,760

'

'

'

'

'

'

'

Mortgage Loans on Real Estate, Number of Re-Performing Loans

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

4,586

'

'

'

Concentration Risk, Credit Risk, Financial Instrument, Maximum Exposure

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

840,000,000

'

'

'

'

'

'

'

'

Total Consideration for Defaulted Loans

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

625,000,000

'

'

'

'

'

Liability for Unpaid Claims and Claims Adjustment Expense, Claims Paid

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

519,336,000

272,398,000

1,155,638,000

754,038,000

'

'

'

'

'

'

'

370,000,000

'

'

'

'

'

'

Net Consideration for Defaulted Loans

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

255,000,000

'

'

'

'

'

Restricted Investments Held as Collateral for Master Transaction Agreement

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

205,000,000

'

'

'

'

'

Termination Trigger Based on Amount of Restricted Investments

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

0

'

Restricted Investments Held as Collateral for Master Transaction Agreement, Gross

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

215,000,000

'

'

'

'

'

Not Final Loss Mitigation Activity

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

137,300,000

'

'

'

'

Loss Mitigation Activity

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

2,400,000

'

'

'

10,000,000

'

'

'

'

'

Unrestricted Cash and Liquid Investments

'

'

'

'

'

'

'

'

'

'

'

'

'

822,100,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Extinguishment of Debt, Amount

'

'

'

'

'

195,500,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Risk to Capital, Entity's Intended Maximum

'

'

'

'

'

'

'

0.2

0.2

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Mortgage Loans on Real Estate, Number of Delinquent Loans

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

9,756

'

'

'

Proceeds from Contributions from Affiliates

'

'

'

'

'

'

'

'

'

'

'

'

'

119,500,000

75,500,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Unrestricted Cash and Liquid Investments Net of Subsidiaries Prepaid Corporate Expenses

'

'

'

'

'

'

'

'

'

'

'

'

'

702,600,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Cash Distributed From Parent to Consolidated Subsidiary

'

'

'

'

'

'

'

$115,000,000

$230,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Note_2_Segment_Reporting_Sched

Note 2 - Segment Reporting Schedule of Segment Reporting Information by Segment (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012
Segment Reporting Information [Line Items]	'	'	'	'	'
Net premiums written-insurance	$250,842	$209,277	$709,256	$468,887	'
Net premiums earned-insurance	211,984	190,963	617,696	545,107	'
Net investment income	26,732	25,635	81,220	91,225	'
Gain (Loss) on Investments, Excluding Other than Temporary Impairments	-7,132	84,659	-142,891	178,537	'
Change in fair value of derivative instruments	10,778	-41,056	-70,357	-146,937	'
Net gains (losses) on other financial instruments	902	-740	-3,585	-80,454	'
Gain on sale of affiliate	0	0	0	7,708	'
Other income	1,314	1,328	5,319	4,163	'
Total revenues	244,578	260,789	487,402	599,349	'
Provision for losses	157,174	176,352	429,524	653,374	'
Change in reserve for premium deficiency	-2,325	966	-1,703	1,505	'
Policy acquisition costs	7,958	12,927	35,159	51,778	'
Other operating expenses	70,974	50,429	212,055	140,776	'
Interest expense	19,570	12,520	54,871	39,249	'
Total expenses	253,351	253,194	729,906	886,682	'
Equity in net (loss) income of affiliates	0	0	1	-13	'
Pretax income (loss)	-8,773	7,595	-242,503	-287,346	'
Segment Reporting Information, Additional Information [Abstract]	'	'	'	'	'
Deferred policy acquisition costs	68,461	'	68,461	'	88,202
Total assets	5,758,573	'	5,758,573	'	5,903,200
Unearned premiums	751,587	'	751,587	'	648,682
VIE debt—at fair value	104,218	'	104,218	'	108,858
Derivative liabilities	344,870	'	344,870	'	266,873
Mortgage Insurance Segment	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'
Net premiums written-insurance	250,799	209,890	719,244	589,261	'
Net premiums earned-insurance	200,120	178,685	581,064	522,899	'
Net investment income	14,868	14,758	45,236	50,377	'
Gain (Loss) on Investments, Excluding Other than Temporary Impairments	-4,380	43,379	-91,003	102,219	'
Change in fair value of derivative instruments	0	-1	0	-32	'
Net gains (losses) on other financial instruments	-168	-1,960	-1,971	-2,627	'
Other income	1,250	1,280	5,121	3,928	'
Total revenues	211,690	236,141	538,447	676,764	'
Provision for losses	152,012	171,805	420,378	614,612	'
Change in reserve for premium deficiency	-2,325	966	-1,703	1,505	'
Policy acquisition costs	5,839	10,126	24,072	26,662	'
Other operating expenses	59,590	40,250	176,665	107,787	'
Interest expense	4,447	1,910	10,820	5,355	'
Total expenses	219,563	225,057	630,232	755,921	'
Pretax income (loss)	-7,873	11,084	-91,785	-79,157	'
Segment Reporting Information, Additional Information [Abstract]	'	'	'	'	'
Cash and investments	2,790,050	3,192,341	2,790,050	3,192,341	'
Deferred policy acquisition costs	29,158	39,148	29,158	39,148	'
Total assets	3,238,224	3,651,849	3,238,224	3,651,849	'
Unearned premiums	535,420	333,144	535,420	333,144	'
Liability for Claims and Claims Adjustment Expense, Property Casualty Liability	2,314,785	3,046,706	2,314,785	3,046,706	3,083,608
Derivative liabilities	0	0	0	0	'
New Insurance Written (“NIW”) (in millions)	13,720	10,598	38,003	25,398	'
Financial Guaranty Segment	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'
Net premiums written-insurance	43	-613	-9,988	-120,374	'
Net premiums earned-insurance	11,864	12,278	36,632	22,208	'
Net investment income	11,864	10,877	35,984	40,848	'
Gain (Loss) on Investments, Excluding Other than Temporary Impairments	-2,752	41,280	-51,888	76,318	'
Change in fair value of derivative instruments	10,778	-41,055	-70,357	-146,905	'
Net gains (losses) on other financial instruments	1,070	1,220	-1,614	-77,827	'
Gain on sale of affiliate	0	0	0	7,708	'
Other income	64	48	198	235	'
Total revenues	32,888	24,648	-51,045	-77,415	'
Provision for losses	5,162	4,547	9,146	38,762	'
Policy acquisition costs	2,119	2,801	11,087	25,116	'
Other operating expenses	11,384	10,179	35,390	32,989	'
Interest expense	15,123	10,610	44,051	33,894	'
Total expenses	33,788	28,137	99,674	130,761	'
Equity in net (loss) income of affiliates	0	0	1	-13	'
Pretax income (loss)	-900	-3,489	-150,718	-208,189	'
Segment Reporting Information, Additional Information [Abstract]	'	'	'	'	'
Cash and investments	2,293,586	2,099,454	2,293,586	2,099,454	'
Deferred policy acquisition costs	39,303	52,123	39,303	52,123	'
Total assets	2,520,349	2,389,508	2,520,349	2,389,508	'
Unearned premiums	216,167	281,311	216,167	281,311	'
Liability for Claims and Claims Adjustment Expense, Financial Guarantee Insurance Contracts	32,094	72,891	32,094	72,891	66,328
Derivative liabilities	344,870	267,323	344,870	267,323	'
Variable Interest Entity, Primary Beneficiary [Member] | Mortgage Insurance Segment	'	'	'	'	'
Segment Reporting Information, Additional Information [Abstract]	'	'	'	'	'
VIE debt—at fair value	11,109	9,448	11,109	9,448	'
Variable Interest Entity, Primary Beneficiary [Member] | Financial Guaranty Segment	'	'	'	'	'
Segment Reporting Information, Additional Information [Abstract]	'	'	'	'	'
VIE debt—at fair value	$93,109	$100,203	$93,109	$100,203	'

Note_2_Segment_Reporting_Recon

Note 2 - Segment Reporting Reconciliation of Net Income (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Net (loss) income:	'	'	'	'
Pretax income (loss)	($8,773)	$7,595	($242,503)	($287,346)
Income tax provision (benefit)	3,909	-6,730	-9,149	-13,180
Total net loss	-12,682	14,325	-233,354	-274,166
Mortgage Insurance Segment	'	'	'	'
Net (loss) income:	'	'	'	'
Pretax income (loss)	-7,873	11,084	-91,785	-79,157
Financial Guaranty Segment	'	'	'	'
Net (loss) income:	'	'	'	'
Pretax income (loss)	($900)	($3,489)	($150,718)	($208,189)

Note_3_Derivative_Instruments_2

Note 3 - Derivative Instruments Fair Values Derivatives, Balance Sheet Location by Derivative Contract Type (Details) (USD $)

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

In Thousands, unless otherwise specified

Financial Guaranty Credit Derivatives [Member]

Financial Guaranty Credit Derivatives [Member]

Net Interest Margin Securities Related And Other [Member]

Net Interest Margin Securities Related And Other [Member]

Financial Guaranty VIE Derivative Liabilities [Member]

Financial Guaranty VIE Derivative Liabilities [Member]

Radian Group Consolidated [Member]

Radian Group Consolidated [Member]

Majority [Member]

Derivatives, Fair Value [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Derivative assets

$20,844

$13,609

$7,311

$12,024

$13,533

$1,585

'

'

$20,844

$13,609

'

Derivative liabilities

344,870

266,873

276,830

196,406

'

'

68,040

70,467

344,870

266,873

'

Derivative liabilities, net

'

'

'

'

$13,533

[1]

'

($68,040)

[2]

'

($324,026)

($253,264)

'

Derivative, Remaining Maturity

'

'

'

'

'

'

'

'

'

'

'5 years

[1]

Represents NIMS derivative assets related to consolidated NIMS VIEs and other purchased derivatives for which we do not have loss exposure that exceeds our net asset amount.

[2]

Represents the fair value of a CDS included in a VIE that we have consolidated. See Note 5 for more information on this transaction, the underlying reference securities and our maximum exposure to loss from this consolidated financial guaranty transaction. The assets in the VIE represent the only funds available to pay the CDS counterparty for amounts due under the contract; therefore, the notional exposure presented for the CDS is limited to the current trust assets.

Note_3_Derivative_Instruments_3

Note 3 - Derivative Instruments Change in Fair Value of Derivative Instruments (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Derivative Instruments, Gain (Loss) [Line Items]	'	'	'	'
Change in fair value of derivative instruments	$10,778	($41,056)	($70,357)	($146,937)
Net Premiums Earned On Derivatives [Member]	'	'	'	'
Derivative Instruments, Gain (Loss) [Line Items]	'	'	'	'
Change in fair value of derivative instruments	4,170	7,169	14,019	23,041
Financial Guaranty Credit Derivatives [Member]	'	'	'	'
Derivative Instruments, Gain (Loss) [Line Items]	'	'	'	'
Change in fair value of derivative instruments	9,198	-51,839	-86,233	-171,219
Financial Guaranty VIE Derivative Liabilities [Member]	'	'	'	'
Derivative Instruments, Gain (Loss) [Line Items]	'	'	'	'
Change in fair value of derivative instruments	-4,026	3,616	513	1,253
Net Interest Margin Securities Related And Other [Member]	'	'	'	'
Derivative Instruments, Gain (Loss) [Line Items]	'	'	'	'
Change in fair value of derivative instruments	1,436	-2	1,344	-12
Radian Group Consolidated [Member]	'	'	'	'
Derivative Instruments, Gain (Loss) [Line Items]	'	'	'	'
Change in fair value of derivative instruments	$10,778	($41,056)	($70,357)	($146,937)

Note_3_Derivative_Instruments_4

Note 3 - Derivative Instruments Derivatives (Details) (USD $)	Sep. 30, 2013		Dec. 31, 2012
In Thousands, unless otherwise specified	derivative
Net Interest Margin Securities Related And Other [Member]	'		'
Derivative [Line Items]	'		'
Number of Credit Risk Derivatives Held	2	[1]	'
Derivative, Notional Amount	$0	[1]	'
Derivative Assets (Liabilities), at Fair Value, Net	13,533	[1]	'
Corporate collateralized debt obligations (CDO's)[Member]	'		'
Derivative [Line Items]	'		'
Number of Credit Risk Derivatives Held	23		'
Derivative, Notional Amount	9,103,298		'
Derivative Assets (Liabilities), at Fair Value, Net	2,286		'
Non Corporate CDOS and other derivative transactions[Member]	'		'
Derivative [Line Items]	'		'
Number of Credit Risk Derivatives Held	44		'
Derivative, Notional Amount	4,728,579		'
Derivative Assets (Liabilities), at Fair Value, Net	-259,537		'
Trust Preferred Securities (TruPs) [Member]	'		'
Derivative [Line Items]	'		'
Number of Credit Risk Derivatives Held	13		'
Derivative, Notional Amount	1,032,996		'
Derivative Assets (Liabilities), at Fair Value, Net	-35,652		'
CDOS of commercial mortgage backed securities (CMBS)[Member]	'		'
Derivative [Line Items]	'		'
Number of Credit Risk Derivatives Held	4		'
Derivative, Notional Amount	1,831,000		'
Derivative Assets (Liabilities), at Fair Value, Net	-99,255		'
Structured finance [Member]	'		'
Derivative [Line Items]	'		'
Number of Credit Risk Derivatives Held	5		'
Derivative, Notional Amount	552,466		'
Derivative Assets (Liabilities), at Fair Value, Net	-82,133		'
Public finance [Member]	'		'
Derivative [Line Items]	'		'
Number of Credit Risk Derivatives Held	22		'
Derivative, Notional Amount	1,312,117		'
Derivative Assets (Liabilities), at Fair Value, Net	-42,497		'
Total Assumed [Member]	'		'
Derivative [Line Items]	'		'
Number of Credit Risk Derivatives Held	31		'
Derivative, Notional Amount	253,412		'
Derivative Assets (Liabilities), at Fair Value, Net	-12,268		'
Assumed structured finance [Member]	'		'
Derivative [Line Items]	'		'
Number of Credit Risk Derivatives Held	26		'
Derivative, Notional Amount	159,774		'
Derivative Assets (Liabilities), at Fair Value, Net	-11,765		'
Assumed public finance [Member]	'		'
Derivative [Line Items]	'		'
Number of Credit Risk Derivatives Held	5		'
Derivative, Notional Amount	93,638		'
Derivative Assets (Liabilities), at Fair Value, Net	-503		'
Financial Guaranty VIE Derivative Liabilities [Member]	'		'
Derivative [Line Items]	'		'
Number of Credit Risk Derivatives Held	1	[2]	'
Derivative, Notional Amount	77,686	[2]	'
Derivative Assets (Liabilities), at Fair Value, Net	-68,040	[2]	'
Radian Group Consolidated [Member]	'		'
Derivative [Line Items]	'		'
Number of Credit Risk Derivatives Held	101		'
Derivative, Notional Amount	14,162,975		19,200,000
Derivative Assets (Liabilities), at Fair Value, Net	($324,026)		($253,264)
[1]	Represents NIMS derivative assets related to consolidated NIMS VIEs and other purchased derivatives for which we do not have loss exposure that exceeds our net asset amount.
[2]	Represents the fair value of a CDS included in a VIE that we have consolidated. See Note 5 for more information on this transaction, the underlying reference securities and our maximum exposure to loss from this consolidated financial guaranty transaction. The assets in the VIE represent the only funds available to pay the CDS counterparty for amounts due under the contract; therefore, the notional exposure presented for the CDS is limited to the current trust assets.

Note_4_Fair_Value_of_Financial3

Note 4 - Fair Value of Financial Instruments Fair Value Assets Liabilities by Hierarchy Level (Details) (USD $)	Sep. 30, 2013		Dec. 31, 2012
Fair Value by Hierarchy Level [Line Items]	'		'
Total held to maturity amortized cost	$428,000		$679,000
Derivative assets	20,844,000		13,609,000
Derivative liabilities	344,870,000		266,873,000
VIE debt—at fair value	104,218,000		108,858,000
Fixed-maturities held to maturity	421,000		676,000
Variable Interest Entity, Primary Beneficiary [Member]	'		'
Fair Value by Hierarchy Level [Line Items]	'		'
Number Of Consolidated Other Financial Guaranty Transactions	2		'
Financial Guarantee Insurance Product Line [Member] | Variable Interest Entity, Primary Beneficiary [Member]	'		'
Fair Value by Hierarchy Level [Line Items]	'		'
VIE debt—at fair value	93,109,000		98,983,000
NIMS VIEs [Member] | Variable Interest Entity, Primary Beneficiary [Member]	'		'
Fair Value by Hierarchy Level [Line Items]	'		'
Derivative assets	1,577,000		1,585,000
VIE debt—at fair value	11,109,000		9,875,000
Fair Value, Measurements, Recurring	'		'
Fair Value by Hierarchy Level [Line Items]	'		'
Total Investments at Fair Value	4,975,200,000	[1]	5,103,000,000	[2]
Derivative assets	20,900,000		13,600,000
Other Assets	93,200,000	[3]	99,200,000	[3]
Total Assets at Fair Value	5,089,300,000		5,215,800,000
Derivative liabilities	344,900,000		266,900,000
VIE debt—at fair value	104,200,000	[4]	108,900,000	[5]
Total Liabilities at Fair Value	449,100,000		375,800,000
Fair Value, Measurements, Recurring | Reported Value Measurement [Member]	'		'
Fair Value by Hierarchy Level [Line Items]	'		'
Total held to maturity amortized cost	400,000		700,000
Other invested assets fair value disclosure	49,600,000		48,700,000
Fair Value, Measurements, Recurring | US government and agency securities	'		'
Fair Value by Hierarchy Level [Line Items]	'		'
Total Investments at Fair Value	1,290,900,000		571,600,000
Fair Value, Measurements, Recurring | State and municipal obligations	'		'
Fair Value by Hierarchy Level [Line Items]	'		'
Total Investments at Fair Value	635,700,000		688,000,000
Fair Value, Measurements, Recurring | Money market instruments	'		'
Fair Value by Hierarchy Level [Line Items]	'		'
Total Investments at Fair Value	548,100,000		638,000,000
Fair Value, Measurements, Recurring | Corporate bonds and notes	'		'
Fair Value by Hierarchy Level [Line Items]	'		'
Total Investments at Fair Value	1,104,500,000		1,373,600,000
Fair Value, Measurements, Recurring | RMBS	'		'
Fair Value by Hierarchy Level [Line Items]	'		'
Total Investments at Fair Value	603,600,000		663,400,000
Fair Value, Measurements, Recurring | CMBS	'		'
Fair Value by Hierarchy Level [Line Items]	'		'
Total Investments at Fair Value	294,800,000		237,300,000
Fair Value, Measurements, Recurring | Other ABS	'		'
Fair Value by Hierarchy Level [Line Items]	'		'
Total Investments at Fair Value	204,200,000		254,100,000
Fair Value, Measurements, Recurring | Foreign government securities	'		'
Fair Value by Hierarchy Level [Line Items]	'		'
Total Investments at Fair Value	'		117,700,000
Fair Value, Measurements, Recurring | Hybrid securities	'		'
Fair Value by Hierarchy Level [Line Items]	'		'
Total Investments at Fair Value	400,000		211,900,000
Fair Value, Measurements, Recurring | Equity securities	'		'
Fair Value by Hierarchy Level [Line Items]	'		'
Total Investments at Fair Value	210,300,000	[6]	265,900,000	[6]
Fair Value, Measurements, Recurring | Other investments	'		'
Fair Value by Hierarchy Level [Line Items]	'		'
Total Investments at Fair Value	82,700,000	[7]	81,500,000	[8]
Fair Value, Inputs, Level 1 | Fair Value, Measurements, Recurring	'		'
Fair Value by Hierarchy Level [Line Items]	'		'
Total Investments at Fair Value	1,538,800,000	[1]	874,700,000	[2]
Derivative assets	0		0
Other Assets	0	[3]	0	[3]
Total Assets at Fair Value	1,538,800,000		874,700,000
Derivative liabilities	0		0
VIE debt—at fair value	0	[4]	0	[5]
Total Liabilities at Fair Value	0		0
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	874,000,000		137,800,000
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
Fair Value, Inputs, Level 1 | Fair Value, Measurements, Recurring | Money market instruments	'		'
Fair Value by Hierarchy Level [Line Items]	'		'
Total Investments at Fair Value	548,100,000		638,000,000
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
Fair Value, Inputs, Level 1 | Fair Value, Measurements, Recurring | RMBS	'		'
Fair Value by Hierarchy Level [Line Items]	'		'
Total Investments at Fair Value	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
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
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 | Hybrid securities	'		'
Fair Value by Hierarchy Level [Line Items]	'		'
Total Investments at Fair Value	0		0
Fair Value, Inputs, Level 1 | Fair Value, Measurements, Recurring | Equity securities	'		'
Fair Value by Hierarchy Level [Line Items]	'		'
Total Investments at Fair Value	116,700,000	[6]	98,900,000	[6]
Fair Value, Inputs, Level 1 | Fair Value, Measurements, Recurring | Other investments	'		'
Fair Value by Hierarchy Level [Line Items]	'		'
Total Investments at Fair Value	0	[7]	0	[8]
Fair Value, Inputs, Level 2 | Fair Value, Measurements, Recurring	'		'
Fair Value by Hierarchy Level [Line Items]	'		'
Total Investments at Fair Value	3,336,400,000	[1]	4,127,600,000	[2]
Derivative assets	12,000,000		0
Other Assets	0	[3]	0	[3]
Total Assets at Fair Value	3,348,400,000		4,127,600,000
Derivative liabilities	0		0
VIE debt—at fair value	0	[4]	0	[5]
Total Liabilities at Fair Value	0		0
Fair Value, Inputs, Level 2 | Fair Value, Measurements, Recurring | Trust Preferred Securities [Member]	'		'
Fair Value by Hierarchy Level [Line Items]	'		'
Total Investments at Fair Value	900,000		900,000
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	416,900,000		433,800,000
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	617,300,000		669,000,000
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
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	1,104,500,000		1,373,600,000
Fair Value, Inputs, Level 2 | Fair Value, Measurements, Recurring | RMBS	'		'
Fair Value by Hierarchy Level [Line Items]	'		'
Total Investments at Fair Value	603,600,000		663,400,000
Fair Value, Inputs, Level 2 | Fair Value, Measurements, Recurring | CMBS	'		'
Fair Value by Hierarchy Level [Line Items]	'		'
Total Investments at Fair Value	294,800,000		237,300,000
Fair Value, Inputs, Level 2 | Fair Value, Measurements, Recurring | Other ABS	'		'
Fair Value by Hierarchy Level [Line Items]	'		'
Total Investments at Fair Value	203,200,000		252,400,000
Fair Value, Inputs, Level 2 | Fair Value, Measurements, Recurring | Foreign government securities	'		'
Fair Value by Hierarchy Level [Line Items]	'		'
Total Investments at Fair Value	'		117,700,000
Fair Value, Inputs, Level 2 | Fair Value, Measurements, Recurring | Hybrid securities	'		'
Fair Value by Hierarchy Level [Line Items]	'		'
Total Investments at Fair Value	400,000		211,900,000
Fair Value, Inputs, Level 2 | Fair Value, Measurements, Recurring | Equity securities	'		'
Fair Value by Hierarchy Level [Line Items]	'		'
Total Investments at Fair Value	93,200,000	[6]	166,000,000	[6]
Fair Value, Inputs, Level 2 | Fair Value, Measurements, Recurring | Other investments	'		'
Fair Value by Hierarchy Level [Line Items]	'		'
Total Investments at Fair Value	2,500,000	[7]	2,500,000	[8]
Fair Value, Inputs, Level 2 | Fair Value, Measurements, Recurring | Short Term CDs	'		'
Fair Value by Hierarchy Level [Line Items]	'		'
Total Investments at Fair Value	1,600,000		1,600,000
Fair Value, Inputs, Level 3 | Financial Guarantee Insurance Product Line [Member] | Variable Interest Entity, Primary Beneficiary [Member]	'		'
Fair Value by Hierarchy Level [Line Items]	'		'
Number Of Consolidated Other Financial Guaranty Transactions	2		2
Fair Value, Inputs, Level 3 | Fair Value, Measurements, Recurring	'		'
Fair Value by Hierarchy Level [Line Items]	'		'
Total Investments at Fair Value	100,000,000	[1]	100,700,000	[2]
Derivative assets	8,900,000		13,600,000
Other Assets	93,200,000	[3]	99,200,000	[3]
Total Assets at Fair Value	202,100,000		213,500,000
Derivative liabilities	344,900,000		266,900,000
VIE debt—at fair value	104,200,000	[4]	108,900,000	[5]
Total Liabilities at Fair Value	449,100,000		375,800,000
Fair Value, Inputs, Level 3 | Fair Value, Measurements, Recurring | Financial Guarantee Insurance Product Line [Member] | Variable Interest Entity, Primary Beneficiary [Member]	'		'
Fair Value by Hierarchy Level [Line Items]	'		'
VIE debt—at fair value	93,100,000		99,000,000
Fair Value, Inputs, Level 3 | Fair Value, Measurements, Recurring | NIMS VIEs [Member] | Variable Interest Entity, Primary Beneficiary [Member]	'		'
Fair Value by Hierarchy Level [Line Items]	'		'
VIE debt—at fair value	11,100,000		9,900,000
Fair Value, Inputs, Level 3 | Fair Value, Measurements, Recurring | US government and agency securities	'		'
Fair Value by Hierarchy Level [Line Items]	'		'
Total Investments at Fair Value	0		0
Fair Value, Inputs, Level 3 | Fair Value, Measurements, Recurring | State and municipal obligations	'		'
Fair Value by Hierarchy Level [Line Items]	'		'
Total Investments at Fair Value	18,400,000		19,000,000
Fair Value, Inputs, Level 3 | Fair Value, Measurements, Recurring | Money market instruments	'		'
Fair Value by Hierarchy Level [Line Items]	'		'
Total Investments at Fair Value	0		0
Fair Value, Inputs, Level 3 | Fair Value, Measurements, Recurring | Corporate bonds and notes	'		'
Fair Value by Hierarchy Level [Line Items]	'		'
Total Investments at Fair Value	0		0
Fair Value, Inputs, Level 3 | Fair Value, Measurements, Recurring | RMBS	'		'
Fair Value by Hierarchy Level [Line Items]	'		'
Total Investments at Fair Value	0		0
Fair Value, Inputs, Level 3 | Fair Value, Measurements, Recurring | CMBS	'		'
Fair Value by Hierarchy Level [Line Items]	'		'
Total Investments at Fair Value	0		0
Fair Value, Inputs, Level 3 | Fair Value, Measurements, Recurring | Other ABS	'		'
Fair Value by Hierarchy Level [Line Items]	'		'
Total Investments at Fair Value	1,000,000		1,700,000
Fair Value, Inputs, Level 3 | Fair Value, Measurements, Recurring | Foreign government securities	'		'
Fair Value by Hierarchy Level [Line Items]	'		'
Total Investments at Fair Value	'		0
Fair Value, Inputs, Level 3 | Fair Value, Measurements, Recurring | Hybrid securities	'		'
Fair Value by Hierarchy Level [Line Items]	'		'
Total Investments at Fair Value	0		0
Fair Value, Inputs, Level 3 | Fair Value, Measurements, Recurring | Equity securities	'		'
Fair Value by Hierarchy Level [Line Items]	'		'
Total Investments at Fair Value	400,000	[6]	1,000,000	[6]
Fair Value, Inputs, Level 3 | Fair Value, Measurements, Recurring | Other investments	'		'
Fair Value by Hierarchy Level [Line Items]	'		'
Total Investments at Fair Value	80,200,000	[7]	79,000,000	[8]
Fair Value, Inputs, Level 3 | Fair Value, Measurements, Recurring | Lottery Annuities	'		'
Fair Value by Hierarchy Level [Line Items]	'		'
Total Investments at Fair Value	500,000		1,000,000
Fair Value, Inputs, Level 3 | Fair Value, Measurements, Recurring | Consolidated Committed Preferred Custodial Trust Securities	'		'
Fair Value by Hierarchy Level [Line Items]	'		'
Total Investments at Fair Value	$79,700,000		$78,000,000
[1]	Does not include fixed-maturities held to maturity ($0.4 million) and certain other invested assets ($49.6 million), primarily invested in limited partnerships, accounted for as cost-method investments and not measured at fair value.
[2]	Does not include fixed-maturities held to maturity ($0.7 million) and certain other invested assets ($48.7 million), primarily invested in limited partnerships, accounted for as cost-method investments and not measured at fair value.
[3]	Primarily comprising manufactured housing loan collateral related to two consolidated financial guaranty VIEs.
[4]	Comprising consolidated debt related to NIMS VIEs ($11.1 million) and amounts related to financial guaranty VIEs ($93.1 million).
[5]	Comprising consolidated debt related to NIMS VIEs ($9.9 million) and amounts related to financial guaranty VIEs ($99.0 million).
[6]	Comprising broadly diversified domestic equity mutual funds included within Level I and various preferred and common stocks invested across numerous companies and industries included within Levels II and III.
[7]	Comprising TruPs ($0.9 million) and short-term certificates of deposit (“CDs”) ($1.6 million) included within Level II, and lottery annuities ($0.5 million) and a guaranteed investment contract held by a consolidated VIE ($79.7 million) within Level III.
[8]	Comprising TruPs ($0.9 million) and short-term CDs ($1.6 million) included within Level II, and lottery annuities ($1.0 million) and a guaranteed investment contract held by a consolidated VIE ($78.0 million) within Level III.

Note_4_Fair_Value_of_Financial4

Note 4 - Fair Value of Financial Instruments Impact of Non-Performance Risk on Fair Value Disclosure (Details) (USD $)	9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2013		Dec. 31, 2012		Sep. 30, 2012	Dec. 31, 2011
	basispoint		basispoint		basispoint	basispoint
Fair Value Concentration of Risk Disclosure Items [Line Items]	'		'		'	'
Derivative Liability, Fair Value, Gross Liability	525		808.4		'	'
Derivative Credit Risk Valuation Adjustment, Derivative Liabilities	246		615.6		'	'
Derivative (Asset) Liability, Fair Value, Net	279		192.8		'	'
Fair Value, Concentration of Risk, Market Risk Management, Additional Details [Member]	'		'		'	'
Five Year CDS Spread Details [Abstract]	'		'		'	'
Radian Group's five year CDS Spread (in basis points)	419		913		1,089	2,732
Number of Years for CDS Spread Related to Non Performance Risk In Fair Value Disclosure	'5 years		'		'	'
Fair Value, Concentration of Risk, Market Risk Management, Additional Details [Member] | Impact of Radian Non Performance Risk	'		'		'	'
Fair Value Concentration of Risk Disclosure Items [Line Items]	'		'		'	'
Market View Of The Probability That Registrant Will Default In The Next Five Years	27.30%		47.70%		'	'
Change in Impact of Non Performance Risk on Fair Value of Financial Instruments	369.6		'		'	'
Corporate collateralized debt obligations (CDO's)[Member]	'		'		'	'
Fair Value Concentration of Risk Disclosure Items [Line Items]	'		'		'	'
Derivative Liability, Fair Value, Gross Liability	19.8		98.8		'	'
Derivative Credit Risk Valuation Adjustment, Derivative Liabilities	22.1		101.6		'	'
Derivative (Asset) Liability, Fair Value, Net	-2.3		-2.8		'	'
Non Corporate CDOS and other derivative transactions[Member]	'		'		'	'
Fair Value Concentration of Risk Disclosure Items [Line Items]	'		'		'	'
Derivative Liability, Fair Value, Gross Liability	493.1	[1]	696.6	[1]	'	'
Derivative Credit Risk Valuation Adjustment, Derivative Liabilities	221.3	[1]	509.3	[1]	'	'
Derivative (Asset) Liability, Fair Value, Net	271.8	[1]	187.3	[1]	'	'
NIMS Related [Member]	'		'		'	'
Fair Value Concentration of Risk Disclosure Items [Line Items]	'		'		'	'
Derivative Liability, Fair Value, Gross Liability	12.1	[2]	13	[2]	'	'
Derivative Credit Risk Valuation Adjustment, Derivative Liabilities	2.6	[2]	4.7	[2]	'	'
Derivative (Asset) Liability, Fair Value, Net	9.5	[2]	8.3	[2]	'	'
[1]	Includes the net fair value liability recorded within derivative assets and derivative liabilities, but does not include the net fair value liability of derivative assets or derivative liabilities within our consolidated VIEs, as Radian Group’s credit spread has no impact on the financial instruments in these VIEs.
[2]	Includes NIMS VIE debt and NIMS derivative assets.

Note_4_Fair_Value_of_Financial5

Note 4 - Fair Value of Financial Instruments Rollforward of Level III Assets and Liabilities Fair Value Disclosure (Details) (Fair Value, Inputs, Level 3, Fair Value, Measurements, Recurring, USD $)	3 Months Ended				9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2013		Sep. 30, 2012		Sep. 30, 2013		Sep. 30, 2012
Derivative Financial Instruments, Net Liabilities [Member]	'		'		'		'
Fair Value Level III Assets and Liabilities [Roll Forward]	'		'		'		'
Beginning Balance Level III Liabilities	$343.60		$207.50		$254.90		$110.60
Realized and Unrealized Gains (Losses) Included in Earnings Level III Liabilities	11.4	[1]	-41	[2]	-69.7	[3]	-146.9	[4]
Purchases Level III Liabilities	0		0		0		0
Sales Level III Liabilities	0		0		0		0
Issuances Level III Liabilities	0		0		0		0
Settlements Level III Liabilities	-5.3		-5.8		-12.9		3.2
Transfers Into (Out of) Level III Liabilities	0	[5]	0	[5]	0	[5]	0	[5]
Ending Balance Level III Liabilities	337.5		254.3		337.5		254.3
Unrealized Gains (Losses) Recorded in Earnings on Level III Liabilities Still Held	5.9		-48		-83.5		-188.3
Variable Interest Entity, Primary Beneficiary [Member]	'		'		'		'
Fair Value Level III Assets and Liabilities [Roll Forward]	'		'		'		'
Beginning Balance Level III Liabilities	106.8		107.8		108.9		228.2
Realized and Unrealized Gains (Losses) Included in Earnings Level III Liabilities	-1.8	[1]	-6.8	[2]	-9	[3]	-111.2	[4]
Purchases Level III Liabilities	0		0		0		0
Sales Level III Liabilities	0		0		0		0
Issuances Level III Liabilities	0		0		0		0
Settlements Level III Liabilities	4.4		4.9		13.7		229.7	[6]
Transfers Into (Out of) Level III Liabilities	0	[5]	0	[5]	0	[5]	0	[5]
Ending Balance Level III Liabilities	104.2		109.7		104.2		109.7
Unrealized Gains (Losses) Recorded in Earnings on Level III Liabilities Still Held	-1		-5.8		-6.4		-12.9
Total Level III liabilities net [Member]	'		'		'		'
Fair Value Level III Assets and Liabilities [Roll Forward]	'		'		'		'
Beginning Balance Level III Liabilities	450.4		315.3		363.8		338.8
Realized and Unrealized Gains (Losses) Included in Earnings Level III Liabilities	9.6	[1]	-47.8	[2]	-78.7	[3]	-258.1	[4]
Purchases Level III Liabilities	0		0		0		0
Sales Level III Liabilities	0		0		0		0
Issuances Level III Liabilities	0		0		0		0
Settlements Level III Liabilities	-0.9		-0.9		0.8		232.9
Transfers Into (Out of) Level III Liabilities	0	[5]	0	[5]	0	[5]	0	[5]
Ending Balance Level III Liabilities	441.7		364		441.7		364
State and municipal obligations	'		'		'		'
Fair Value Level III Assets and Liabilities [Roll Forward]	'		'		'		'
Beginning Balance Level III Assets	19.4		19.6		19		62.5
Realized and Unrealized Gains (Losses) Level III Assets Included in Earnings	0.4	[1]	0.4	[2]	0.8	[3]	-3.6	[4]
Purchases Level III Assets	0		0		0		0
Sales Level III Assets	0		0		0		0
Issuances Level III Assets	0		0		0		0
Settlements Level III Assets	1.4		1.2		1.4		12.3
Transfers Into (Out of) Level III Assets	0	[5]	0	[5]	0	[5]	-27.8	[5],[7]
Ending Balance Level III Assets	18.4		18.8		18.4		18.8
Corporate Debt Securities	'		'		'		'
Fair Value Level III Assets and Liabilities [Roll Forward]	'		'		'		'
Beginning Balance Level III Assets	'		'		0		'
Realized and Unrealized Gains (Losses) Level III Assets Included in Earnings	'		'		-0.1	[3]	'
Purchases Level III Assets	'		'		2.7		'
Sales Level III Assets	'		'		0		'
Issuances Level III Assets	'		'		0		'
Settlements Level III Assets	'		'		0		'
Transfers Into (Out of) Level III Assets	'		'		-2.6	[5],[7]	'
Ending Balance Level III Assets	0		'		0		'
RMBS	'		'		'		'
Fair Value Level III Assets and Liabilities [Roll Forward]	'		'		'		'
Beginning Balance Level III Assets	'		'		'		45.5
Realized and Unrealized Gains (Losses) Level III Assets Included in Earnings	'		'		'		6.1	[4]
Purchases Level III Assets	'		'		'		0
Sales Level III Assets	'		'		'		0
Issuances Level III Assets	'		'		'		0
Settlements Level III Assets	'		'		'		51.6
Transfers Into (Out of) Level III Assets	'		'		'		0	[5]
Ending Balance Level III Assets	'		0		'		0
CMBS	'		'		'		'
Fair Value Level III Assets and Liabilities [Roll Forward]	'		'		'		'
Beginning Balance Level III Assets	'		'		0		35.4
Realized and Unrealized Gains (Losses) Level III Assets Included in Earnings	'		'		0	[3]	-11.4	[4]
Purchases Level III Assets	'		'		3.1		0
Sales Level III Assets	'		'		3.1		0
Issuances Level III Assets	'		'		0		0
Settlements Level III Assets	'		'		0		24
Transfers Into (Out of) Level III Assets	'		'		0	[5]	0	[5]
Ending Balance Level III Assets	0		0		0		0
CDO	'		'		'		'
Fair Value Level III Assets and Liabilities [Roll Forward]	'		'		'		'
Beginning Balance Level III Assets	'		'		'		5.5
Realized and Unrealized Gains (Losses) Level III Assets Included in Earnings	'		'		'		0.8	[4]
Purchases Level III Assets	'		'		'		0
Sales Level III Assets	'		'		'		0
Issuances Level III Assets	'		'		'		0
Settlements Level III Assets	'		'		'		6.3
Transfers Into (Out of) Level III Assets	'		'		'		0	[5]
Ending Balance Level III Assets	'		0		'		0
Other ABS	'		'		'		'
Fair Value Level III Assets and Liabilities [Roll Forward]	'		'		'		'
Beginning Balance Level III Assets	1.2		4.8		1.7		2.9
Realized and Unrealized Gains (Losses) Level III Assets Included in Earnings	0	[1]	0	[2]	0	[3]	0.8	[4]
Purchases Level III Assets	0		0		0		5.2
Sales Level III Assets	0		0		0		0
Issuances Level III Assets	0		0		0		0
Settlements Level III Assets	0.2		0.5		0.7		4.6
Transfers Into (Out of) Level III Assets	0	[5]	-4.3	[5],[7]	0	[5]	-4.3	[5],[7]
Ending Balance Level III Assets	1		0		1		0
Hybrid securities	'		'		'		'
Fair Value Level III Assets and Liabilities [Roll Forward]	'		'		'		'
Beginning Balance Level III Assets	'		'		'		4.8
Realized and Unrealized Gains (Losses) Level III Assets Included in Earnings	'		'		'		0.1	[4]
Purchases Level III Assets	'		'		'		0.1
Sales Level III Assets	'		'		'		4.9
Issuances Level III Assets	'		'		'		0
Settlements Level III Assets	'		'		'		0
Transfers Into (Out of) Level III Assets	'		'		'		-0.1	[5],[7]
Ending Balance Level III Assets	'		0		'		0
Equity securities	'		'		'		'
Fair Value Level III Assets and Liabilities [Roll Forward]	'		'		'		'
Beginning Balance Level III Assets	0.4		2		1		0.8
Realized and Unrealized Gains (Losses) Level III Assets Included in Earnings	0	[1]	-0.4	[2]	0	[3]	0.1	[4]
Purchases Level III Assets	0		0		0		0
Sales Level III Assets	0		0.1		0.6		0.1
Issuances Level III Assets	0		0		0		0
Settlements Level III Assets	0		0		0		0
Transfers Into (Out of) Level III Assets	0	[5]	0.1	[5]	0	[5]	0.8	[5]
Ending Balance Level III Assets	0.4		1.6		0.4		1.6
Other investments	'		'		'		'
Fair Value Level III Assets and Liabilities [Roll Forward]	'		'		'		'
Beginning Balance Level III Assets	77.4		76.5		79		6.8
Realized and Unrealized Gains (Losses) Level III Assets Included in Earnings	2.3	[1]	-0.6	[2]	0.4	[3]	0.6	[4]
Purchases Level III Assets	0.5		0.9		1.3		75.9
Sales Level III Assets	0		0.1		0.1		0.6
Issuances Level III Assets	0		0		0		0
Settlements Level III Assets	0		0		0.4		6
Transfers Into (Out of) Level III Assets	0	[5]	0	[5]	0	[5]	0	[5]
Ending Balance Level III Assets	80.2		76.7		80.2		76.7
Investments	'		'		'		'
Fair Value Level III Assets and Liabilities [Roll Forward]	'		'		'		'
Beginning Balance Level III Assets	98.4		102.9		100.7		164.2
Realized and Unrealized Gains (Losses) Level III Assets Included in Earnings	2.7	[1]	-0.6	[2]	1.1	[3]	-6.5	[4]
Purchases Level III Assets	0.5		0.9		7.1		81.2
Sales Level III Assets	0		0.2		3.8		5.6
Issuances Level III Assets	0		0		0		0
Settlements Level III Assets	1.6		1.7		2.5		104.8
Transfers Into (Out of) Level III Assets	0	[5]	-4.2	[5]	-2.6	[5]	-31.4	[5]
Ending Balance Level III Assets	100		97.1		100		97.1
Unrealized Gains (Losses) Recorded in Earnings on Level III Assets Still Held	2.3		-1.1		0.4		-0.1
NIMS Derivatives	'		'		'		'
Fair Value Level III Assets and Liabilities [Roll Forward]	'		'		'		'
Beginning Balance Level III Assets	1.6		1.7		1.6		1.6
Realized and Unrealized Gains (Losses) Level III Assets Included in Earnings	0	[1]	0	[2]	0	[3]	0	[4]
Purchases Level III Assets	0		0.1		0		0.2
Sales Level III Assets	0		0		0		0
Issuances Level III Assets	0		0		0		0
Settlements Level III Assets	0		0		0		0
Transfers Into (Out of) Level III Assets	0	[5]	0	[5]	0	[5]	0	[5]
Ending Balance Level III Assets	1.6		1.8		1.6		1.8
Other Assets	'		'		'		'
Fair Value Level III Assets and Liabilities [Roll Forward]	'		'		'		'
Beginning Balance Level III Assets	96		100.7		99.2		104
Realized and Unrealized Gains (Losses) Level III Assets Included in Earnings	2.7	[1]	6.1	[2]	11.1	[3]	15.4	[4]
Purchases Level III Assets	0		0		0		0
Sales Level III Assets	0		0		0		0
Issuances Level III Assets	0		0		0		0
Settlements Level III Assets	5.5		6.2		17.1		18.8
Transfers Into (Out of) Level III Assets	0	[5]	0	[5]	0	[5]	0	[5]
Ending Balance Level III Assets	93.2		100.6		93.2		100.6
Unrealized Gains (Losses) Recorded in Earnings on Level III Assets Still Held	0.5		3.5		3.9		7.3
Total Level III Assets	'		'		'		'
Fair Value Level III Assets and Liabilities [Roll Forward]	'		'		'		'
Beginning Balance Level III Assets	196		205.3		201.5		269.8
Realized and Unrealized Gains (Losses) Level III Assets Included in Earnings	5.4	[1]	5.5	[2]	12.2	[3]	8.9	[4]
Purchases Level III Assets	0.5		1		7.1		81.4
Sales Level III Assets	0		0.2		3.8		5.6
Issuances Level III Assets	0		0		0		0
Settlements Level III Assets	7.1		7.9		19.6		123.6
Transfers Into (Out of) Level III Assets	0	[5]	-4.2	[5]	-2.6	[5]	-31.4	[5]
Ending Balance Level III Assets	$194.80		$199.50		$194.80		$199.50
[1]	Includes unrealized gains (losses) for the quarter ended September 30, 2013, relating to assets and liabilities still held at September 30, 2013 as follows: $2.3 million for investments, $0.5 million for other assets, $5.9 million for derivative liabilities and $(1.0) million for VIE debt.
[2]	Includes unrealized gains (losses) for the quarter ended September 30, 2012, relating to assets and liabilities still held at September 30, 2012 as follows: $(1.1) million for investments, $3.5 million for other assets, $(48.0) million for derivative liabilities, and $(5.8) million for VIE debt.
[3]	Includes unrealized gains (losses) for the nine months ended September 30, 2013, relating to assets and liabilities still held at September 30, 2013 as follows: $0.4 million for investments, $3.9 million for other assets, $(83.5) million for derivative liabilities and $(6.4) million for VIE debt.
[4]	Includes unrealized gains (losses) for the nine months ended September 30, 2012, relating to assets and liabilities still held at September 30, 2012 as follows: $(0.1) million for investments, $7.3 million for other assets, $(188.3) million for derivative liabilities, and $(12.9) million for VIE debt.
[5]	Transfers are recognized at the end of the period as the availability of market observed inputs change from period to period.
[6]	Primarily represents the settlement of our CDO of ABS.
[7]	During the period, pricing from a third-party pricing source became available that utilized observable inputs for individual instruments. As a result, these instruments were transferred out of Level III and into Level II.

Note_4_Fair_Value_of_Financial6

Note 4 - Fair Value of Financial Instruments Fair Value Measurement Inputs for Level III Assets and Liabilities (Details) (USD $)	Sep. 30, 2013		Dec. 31, 2012
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]	'		'
Derivative assets	$20,844,000		$13,609,000
Derivative liabilities	344,870,000		266,873,000
Corporate collateralized debt obligations (CDO's)[Member]	'		'
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]	'		'
Derivative Assets (Liabilities), at Fair Value, Net	2,286,000		'
Non Corporate CDOS and other derivative transactions[Member]	'		'
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]	'		'
Derivative Assets (Liabilities), at Fair Value, Net	-259,537,000		'
Fair Value, Inputs, Level 3	'		'
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]	'		'
Total Level III Assets	4.00%		'
Total Level III Liabilities	100.00%		'
Fair Value, Inputs, Level 3 | Discounted Cash Flow Valuation Technique [Member] | Collateralized Debt Obligation of Commercial Mortgage Backed Securities [Member]	'		'
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]	'		'
Derivative Assets (Liabilities), at Fair Value, Net	-99,300,000	[1]	-74,700,000	[1]
Fair Value, Inputs, Level 3 | Discounted Cash Flow Valuation Technique [Member] | Collateralized Debt Obligation of Commercial Mortgage Backed Securities [Member] | Minimum [Member]	'		'
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]	'		'
Fair Value, Measurement with Unobservable Inputs, Additional Disclosure, CDS Spread Percent	1.40%	[2]	8.00%	[2]
Fair Value, Measurement with Unobservable Inputs, Additional Disclosure, Correlation Factor Related to Vintage and Credit Rating	72.00%		72.00%
Fair Value, Inputs, Level 3 | Discounted Cash Flow Valuation Technique [Member] | Collateralized Debt Obligation of Commercial Mortgage Backed Securities [Member] | Maximum [Member]	'		'
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]	'		'
Fair Value, Measurement with Unobservable Inputs, Additional Disclosure, CDS Spread Percent	5.30%	[2]	9.10%	[2]
Fair Value, Measurement with Unobservable Inputs, Additional Disclosure, Correlation Factor Related to Vintage and Credit Rating	85.00%		85.00%
Fair Value, Inputs, Level 3 | Discounted Cash Flow Valuation Technique [Member] | TruPs Collateralized Debt Obligation [Member]	'		'
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]	'		'
Derivative Assets (Liabilities), at Fair Value, Net	-35,700,000	[1]	-11,100,000	[1]
Fair Value, Inputs, Level 3 | Discounted Cash Flow Valuation Technique [Member] | TruPs Collateralized Debt Obligation [Member] | Minimum [Member]	'		'
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]	'		'
Fair Value, Measurement with Unobservable Inputs, Additional Disclosure, CDS Spread Percent	1.40%	[2]	8.00%	[2]
Fair Value, Measurement with Unobservable Inputs, Additional Disclosure, Probability of Paying a Conditional Liquidity Claim	0.80%		0.80%
Fair Value, Inputs, Level 3 | Discounted Cash Flow Valuation Technique [Member] | TruPs Collateralized Debt Obligation [Member] | Maximum [Member]	'		'
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]	'		'
Fair Value, Measurement with Unobservable Inputs, Additional Disclosure, CDS Spread Percent	5.30%	[2]	9.10%	[2]
Fair Value, Measurement with Unobservable Inputs, Additional Disclosure, Probability of Paying a Conditional Liquidity Claim	10.00%		36.70%
Fair Value, Inputs, Level 3 | Discounted Cash Flow Valuation Technique [Member] | TruPs Collateralized Debt Obligation [Member] | Weighted Average [Member]	'		'
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]	'		'
Fair Value, Measurement with Unobservable Inputs, Additional Disclosure, Principal Recovery Percent	72.00%		65.00%
Fair Value, Measurement with Unobservable Inputs, Additional Disclosure, Principal Recovery Rate Using Distressed Pricing Scenario	62.00%		60.00%
Fair Value, Inputs, Level 3 | Discounted Cash Flow Valuation Technique [Member] | TruPs-Related VIE Liabilities [Member]	'		'
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]	'		'
Variable Interest Entity, Consolidated, Fair Value, Net Asset (Liability)	-68,000,000	[1]	-70,400,000	[1]
Fair Value, Inputs, Level 3 | Discounted Cash Flow Valuation Technique [Member] | TruPs-Related VIE Liabilities [Member] | Weighted Average [Member]	'		'
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]	'		'
Fair Value, Measurement with Unobservable Inputs, Additional Disclosure, Discount Rate	13.00%		13.40%
Fair Value, Inputs, Level 3 | Discounted Cash Flow Valuation Technique [Member] | NIMS Derivatives	'		'
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]	'		'
Derivative Assets (Liabilities), at Fair Value, Net	1,600,000	[1]	1,600,000	[1]
Fair Value, Inputs, Level 3 | Discounted Cash Flow Valuation Technique [Member] | NIMS Derivatives | Weighted Average [Member]	'		'
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]	'		'
Fair Value, Measurement with Unobservable Inputs, Additional Disclosure, CDS Spread Percent	1.40%	[2]	8.50%	[2]
Fair Value, Measurement with Unobservable Inputs, Additional Disclosure, NIMS Spread	43.60%		44.00%
Fair Value, Inputs, Level 3 | Discounted Cash Flow Valuation Technique [Member] | NIMS VIEs [Member]	'		'
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]	'		'
Variable Interest Entity, Consolidated, Fair Value, Net Asset (Liability)	-11,100,000	[1]	-9,900,000	[1]
Fair Value, Inputs, Level 3 | Discounted Cash Flow Valuation Technique [Member] | NIMS VIEs [Member] | Minimum [Member]	'		'
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]	'		'
Fair Value, Measurement with Unobservable Inputs, Additional Disclosure, CDS Spread Percent	1.80%	[2]	8.50%	[2]
Fair Value, Inputs, Level 3 | Discounted Cash Flow Valuation Technique [Member] | NIMS VIEs [Member] | Maximum [Member]	'		'
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]	'		'
Fair Value, Measurement with Unobservable Inputs, Additional Disclosure, CDS Spread Percent	8.70%	[2]	10.90%	[2]
Fair Value, Inputs, Level 3 | Discounted Cash Flow Valuation Technique [Member] | NIMS VIEs [Member] | Weighted Average [Member]	'		'
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]	'		'
Fair Value, Measurement with Unobservable Inputs, Additional Disclosure, NIMS Spread	43.60%		43.70%
Fair Value, Inputs, Level 3 | Discounted Cash Flow Valuation Technique [Member] | State and municipal obligations	'		'
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]	'		'
Investments, Fair Value Disclosure	18,400,000	[1]	19,000,000	[1]
Fair Value, Inputs, Level 3 | Discounted Cash Flow Valuation Technique [Member] | State and municipal obligations | Weighted Average [Member]	'		'
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]	'		'
Fair Value, Measurement with Unobservable Inputs, Additional Disclosure, Discount Rate	8.40%		8.80%
Fair Value, Measurement with Unobservable Inputs, Additional Disclosure, Expected Loss Rate	11.10%		19.00%
Fair Value, Inputs, Level 3 | Discounted Cash Flow Valuation Technique [Member] | Other investments	'		'
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]	'		'
Investments, Fair Value Disclosure	79,700,000	[1]	78,000,000	[1]
Fair Value, Inputs, Level 3 | Discounted Cash Flow Valuation Technique [Member] | Other investments | Weighted Average [Member]	'		'
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]	'		'
Fair Value, Measurement with Unobservable Inputs, Additional Disclosure, Discount Rate	1.60%		1.90%
Fair Value, Inputs, Level 3 | Base Correlation Model Valuation Technique [Member] | Corporate collateralized debt obligations (CDO's)[Member]	'		'
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]	'		'
Derivative Assets (Liabilities), at Fair Value, Net	2,300,000	[1]	2,800,000	[1]
Fair Value, Inputs, Level 3 | Base Correlation Model Valuation Technique [Member] | Corporate collateralized debt obligations (CDO's)[Member] | Minimum [Member]	'		'
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]	'		'
Fair Value, Measurement with Unobservable Inputs, Additional Disclosure, CDS Spread Percent	1.40%	[2]	8.00%	[2]
Fair Value, Inputs, Level 3 | Base Correlation Model Valuation Technique [Member] | Corporate collateralized debt obligations (CDO's)[Member] | Minimum [Member] | Less Than [Member]	'		'
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]	'		'
Fair Value, Measurement with Unobservable Inputs, Additional Disclosure, Average Credit Spread	0.10%		0.10%
Fair Value, Inputs, Level 3 | Base Correlation Model Valuation Technique [Member] | Corporate collateralized debt obligations (CDO's)[Member] | Maximum [Member]	'		'
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]	'		'
Fair Value, Measurement with Unobservable Inputs, Additional Disclosure, Average Credit Spread	1.40%		2.70%
Fair Value, Measurement with Unobservable Inputs, Additional Disclosure, CDS Spread Percent	5.30%	[2]	9.10%	[2]
Fair Value, Inputs, Level 3 | Base Correlation Model Valuation Technique [Member] | Corporate collateralized debt obligations (CDO's)[Member] | Weighted Average [Member]	'		'
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]	'		'
Fair Value, Measurement with Unobservable Inputs, Additional Disclosure, Correlation Factor	85.00%		85.00%
Fair Value, Inputs, Level 3 | Risk-Based Model Valuation Technique [Member] | Non Corporate CDOS and other derivative transactions[Member]	'		'
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]	'		'
Derivative Assets (Liabilities), at Fair Value, Net	($136,900,000)	[1]	($101,400,000)	[1]
Fair Value, Inputs, Level 3 | Risk-Based Model Valuation Technique [Member] | Non Corporate CDOS and other derivative transactions[Member] | Minimum [Member]	'		'
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]	'		'
Fair Value, Measurement with Unobservable Inputs, Additional Disclosure, CDS Spread Percent	1.40%	[2]	8.00%	[2]
Fair Value, Inputs, Level 3 | Risk-Based Model Valuation Technique [Member] | Non Corporate CDOS and other derivative transactions[Member] | Minimum [Member] | Less Than [Member]	'		'
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]	'		'
Derivative, Expected Remaining Life	'1 year		'1 year
Fair Value, Inputs, Level 3 | Risk-Based Model Valuation Technique [Member] | Non Corporate CDOS and other derivative transactions[Member] | Maximum [Member]	'		'
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]	'		'
Fair Value, Measurement with Unobservable Inputs, Additional Disclosure, CDS Spread Percent	5.30%	[2]	9.10%	[2]
Derivative, Expected Remaining Life	'20 years		'20 years
[1]	Excludes certain assets and liabilities for which we do not develop quantitative unobservable inputs. The fair value estimates for these assets and liabilities are developed using third-party pricing information, generally without adjustment.
[2]	Represents the range of Radian Group’s CDS spread that a typical market participant might use in the valuation analysis based on the remaining term of the investment.

Note_4_Fair_Value_of_Financial7

Note 4 - Fair Value of Financial Instruments Other Fair Value Disclosure (Details) (USD $)	Sep. 30, 2013		Dec. 31, 2012
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'		'
Total held to maturity amortized cost	$428,000		$679,000
Fixed-maturities held to maturity	421,000		676,000
Other Investments	129,394,000		126,750,000
Long-term debt	921,927,000		663,571,000
Fair Value, Measurements, Recurring | Carrying (Reported) Amount, Fair Value Disclosure [Member]	'		'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'		'
Total held to maturity amortized cost	400,000		700,000
Other Investments	49,600,000		'
Other invested assets fair value disclosure	49,600,000		48,700,000
Long-term debt	921,900,000	[1]	663,600,000	[1]
Non Derivative Financial Guaranty liabilities	165,800,000		232,900,000
Fair Value, Measurements, Recurring | Estimate of Fair Value, Fair Value Disclosure [Member]	'		'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'		'
Fixed-maturities held to maturity	400,000	[2]	700,000	[2]
Other invested assets fair value disclosure	54,200,000	[2]	57,400,000	[2]
Long-term Debt, Fair Value	1,496,500,000	[1],[2]	704,800,000	[1],[2]
Non Derivative Financial Guaranty Liabilities, Estimated Fair Value	$234,600,000	[3]	$308,100,000	[3]
[1]	The carrying amount of long-term debt is net of the equity component of our convertible notes, which is accounted for under the accounting standard for convertible debt instruments that may be settled in cash upon conversion (including partial cash settlement). The fair value is estimated based on the quoted market prices for the same or similar issues. See Note 10 for further information.
[2]	These estimated fair values would be classified in Level II of the fair value hierarchy.
[3]	These estimated fair values would be classified in Level III of the fair value hierarchy.

Note_5_VIEs_Financial_Guaranty

Note 5 - VIEs Financial Guaranty Insurance Contracts VIEs (Details) (USD $)

3 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

9 Months Ended

9 Months Ended

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Dec. 31, 2012

Sep. 30, 2013

Jun. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Dec. 31, 2012

Sep. 30, 2013

Sep. 30, 2012

Dec. 31, 2012

Sep. 30, 2013

Jun. 30, 2013

Dec. 31, 2012

Sep. 30, 2012

Jun. 30, 2012

Dec. 31, 2011

Variable Interest Entity, Primary Beneficiary [Member]

April 2012 Commutation Transactions [Member]

Financial Guaranty Segment

Financial Guaranty Segment

Financial Guaranty Segment

Financial Guaranty Segment

Financial Guaranty Segment

Financial Guaranty Segment

Financial Guarantee Insurance Product Line [Member]

Financial Guarantee Insurance Product Line [Member]

Financial Guarantee Insurance Product Line [Member]

Financial Guarantee Insurance Product Line [Member]

Financial Guarantee Insurance Product Line [Member]

Financial Guarantee Insurance Product Line [Member]

Financial Guarantee Insurance Product Line [Member]

Financial Guarantee Insurance Product Line [Member]

Financial Guarantee Insurance Product Line [Member]

Financial Guarantee Insurance Product Line [Member]

Financial Guarantee Insurance Product Line [Member]

Financial Guarantee Insurance Product Line [Member]

transaction

Radian Asset Assurance [Member]

Variable Interest Entity, Primary Beneficiary [Member]

Variable Interest Entity, Primary Beneficiary [Member]

Variable Interest Entity, Primary Beneficiary [Member]

Variable Interest Entity, Primary Beneficiary [Member]

Variable Interest Entity, Primary Beneficiary [Member]

Variable Interest Entity, Not Primary Beneficiary [Member]

Variable Interest Entity, Not Primary Beneficiary [Member]

Variable Interest Entity, Not Primary Beneficiary [Member]

Financial Guaranty Segment

Financial Guaranty Segment

Financial Guaranty Segment

Financial Guaranty Segment

Financial Guaranty Segment

Financial Guaranty Segment

security

counterparty

transaction

Variable Interest Entity [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of Derivative Counterparties Involved in Commutation

'

'

'

'

'

'

1

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number Of Trups CDOs Terminated

'

'

'

'

'

'

6

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Net Par Outstanding

'

'

'

'

'

'

$699,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number Of Consolidated Other Financial Guaranty Transactions

'

'

'

'

'

2

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number Of Consolidated CDO Of ABS Transactions

'

'

'

'

'

'

1

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Balance Sheet Related Disclosures

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Variable Interest Entity Carrying Amount Of Other Invested Assets

79,749,000

'

79,749,000

'

78,006,000

'

'

'

'

'

'

'

'

79,749,000

'

78,006,000

'

'

'

'

'

'

'

'

'

Derivative assets

20,844,000

'

20,844,000

'

13,609,000

'

'

'

'

'

'

'

'

'

'

'

1,176,000

'

3,201,000

'

'

'

'

'

'

Premiums receivable

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

2,290,000

'

2,859,000

'

'

'

'

'

'

VIE Other Assets

93,375,000

'

93,375,000

'

99,337,000

'

'

'

'

'

'

'

'

93,375,000

'

99,337,000

0

'

0

'

'

'

'

'

'

Unearned premiums

751,587,000

'

751,587,000

'

648,682,000

'

'

216,167,000

281,311,000

216,167,000

281,311,000

'

'

'

'

'

1,960,000

'

2,513,000

'

'

'

'

'

'

Reserve for losses and LAE

2,346,879,000

'

2,346,879,000

'

3,149,936,000

'

'

'

'

'

'

'

'

'

'

'

13,977,000

'

14,376,000

30,538,000

23,611,000

64,291,000

70,608,000

92,645,000

60,550,000

VIE Derivative Liabilities

68,040,000

'

68,040,000

'

70,467,000

'

'

'

'

'

'

'

'

68,040,000

'

70,467,000

'

'

'

'

'

'

'

'

'

Derivative liabilities

344,870,000

'

344,870,000

'

266,873,000

'

'

344,870,000

267,323,000

344,870,000

267,323,000

'

'

'

'

'

259,261,000

'

175,781,000

'

'

'

'

'

'

VIE debt—at fair value

104,218,000

'

104,218,000

'

108,858,000

'

'

'

'

'

'

93,109,000

100,203,000

93,109,000

'

98,983,000

'

'

'

'

'

'

'

'

'

VIE Accounts Payable And Other Liabilities

285,000

'

285,000

'

366,000

'

'

'

'

'

'

'

'

285,000

'

366,000

'

'

'

'

'

'

'

'

'

Maximum exposure (1)

'

'

'

'

'

'

'

'

'

'

'

'

'

123,849,000

[1]

'

120,939,000

[1]

4,748,667,000

[1]

'

5,096,718,000

[1]

'

'

'

'

'

'

Statement of Operations

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Premiums earned

211,984,000

190,963,000

617,696,000

545,107,000

'

'

'

11,864,000

12,278,000

36,632,000

22,208,000

'

'

'

'

'

872,000

1,286,000

'

'

'

'

'

'

'

Net investment income

26,732,000

25,635,000

81,220,000

91,225,000

'

'

'

11,864,000

10,877,000

35,984,000

40,848,000

'

'

1,338,000

2,903,000

'

'

'

'

'

'

'

'

'

'

Gain (Loss) on Investments, Excluding Other than Temporary Impairments

-7,132,000

84,659,000

-142,891,000

178,537,000

'

'

'

-2,752,000

41,280,000

-51,888,000

76,318,000

'

'

405,000

-3,128,000

'

'

'

'

'

'

'

'

'

'

Change in fair value of derivative instruments

10,778,000

-41,056,000

-70,357,000

-146,937,000

'

'

'

10,778,000

-41,055,000

-70,357,000

-146,905,000

'

'

513,000

1,253,000

'

-82,069,000

-166,404,000

'

'

'

'

'

'

'

Net gains (losses) on other financial instruments

902,000

-740,000

-3,585,000

-80,454,000

'

'

'

1,070,000

1,220,000

-1,614,000

-77,827,000

'

'

3,377,000

-91,274,000

'

'

'

'

'

'

'

'

'

'

Provision for losses, (decrease) increase

157,174,000

176,352,000

429,524,000

653,374,000

'

'

'

5,162,000

4,547,000

9,146,000

38,762,000

'

'

'

'

'

-208,000

5,854,000

'

'

'

'

'

'

'

Other operating expenses

70,974,000

50,429,000

212,055,000

140,776,000

'

'

'

11,384,000

10,179,000

35,390,000

32,989,000

'

'

1,469,000

1,802,000

'

'

'

'

'

'

'

'

'

'

Net cash inflow for VIEs

'

'

'

'

'

'

'

'

'

'

'

'

'

$333,000

($134,600,000)

'

$4,133,000

($70,486,000)

'

'

'

'

'

'

'

[1]

The difference between the carrying amounts of the net asset/liability position and maximum exposure related to VIEs is primarily due to the difference between the face amount of the obligation and the recorded fair values, which include an adjustment for our non-performance risk, as applicable. For those VIEs that have recourse to our general credit, the maximum exposure is based on the net par amount of our insured obligation. For any VIEs that do not have recourse to our general credit, the maximum exposure is generally based on the recorded net assets of the VIE, as of the reporting date.

Note_5_VIEs_NIMS_VIEs_Details

Note 5 - VIEs NIMS VIEs (Details) (USD $)	3 Months Ended			9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013		Sep. 30, 2012	Sep. 30, 2013		Sep. 30, 2012	Dec. 31, 2012
Balance Sheet Related Disclosures	'		'	'		'	'
Derivative assets	$20,844		'	$20,844		'	$13,609
VIE debt—at fair value	104,218		'	104,218		'	108,858
Statement of Operations	'		'	'		'	'
Net investment income	26,732		25,635	81,220		91,225	'
Change in fair value of derivative instruments	10,778		-41,056	-70,357		-146,937	'
Net gains (losses) on other financial instruments	902		-740	-3,585		-80,454	'
NIMS VIEs [Member] | Variable Interest Entity, Primary Beneficiary [Member]	'		'	'		'	'
Balance Sheet Related Disclosures	'		'	'		'	'
Derivative assets	1,577		'	1,577		'	1,585
VIE debt—at fair value	11,109		'	11,109		'	9,875
Maximum exposure (1)	14,061	[1]	'	14,061	[1]	'	14,061	[1]
Statement of Operations	'		'	'		'	'
Net investment income	'		'	178		427	'
Change in fair value of derivative instruments	'		'	0		3	'
Net gains (losses) on other financial instruments	'		'	-1,270		-4,500	'
NIMS VIEs Additional Disclosures	'		'	'		'	'
Number Of Remaining NIMS Bonds	2		'	2		'	'
Net cash inflow	'		'	$149		$4,301	'
[1]	The difference between the carrying amounts of the net asset/liability position and maximum exposure related to VIEs is primarily due to the difference between the face amount of the obligation and the recorded fair values, which include an adjustment for our non-performance risk, as applicable. For those VIEs that have recourse to our general credit, the maximum exposure is based on the net par amount of our insured obligation. For any VIEs that do not have recourse to our general credit, the maximum exposure is generally based on the recorded net assets of the VIE, as of the reporting date.

Note_6_Investments_Total_Debt_

Note 6 - Investments Total Debt and Equity Securities (Details) (USD $)	9 Months Ended		12 Months Ended
	Sep. 30, 2013		Dec. 31, 2012
Fixed maturities held to maturity	'		'
Total held to maturity amortized cost	$428,000		$679,000
Fixed maturities held to maturity, Fair Value Disclosure	421,000		676,000
Fixed maturities available for sale securities	'		'
Amortized cost	97,819,000		39,481,000
Equity securities available for sale	'		'
Available-for-sale Equity Securities, Amortized Cost Basis	78,106,000		88,260,000
Equity securities available for sale—at fair value	121,868,000		112,139,000
Total debt and equity securities	'		'
Amortized Cost	176,353,000		128,420,000
Fair Value	221,201,000		153,511,000
Gross Unrealized Gains	45,821,000		25,501,000
Gross Unrealized Losses	973,000		410,000
Debt Securities	'		'
Fixed maturities held to maturity	'		'
Total held to maturity amortized cost	428,000		679,000
Fixed maturities held to maturity, Fair Value Disclosure	421,000		676,000
Gross unrealized gains	0		3,000
Gross unrealized losses	7,000		6,000
Fixed maturities available for sale securities	'		'
Amortized cost	97,819,000		39,481,000
Fair value	98,912,000		40,696,000
Gross unrealized gains	2,059,000		1,619,000
Gross unrealized losses	966,000		404,000
US government and agency securities	'		'
Fixed maturities available for sale securities	'		'
Amortized cost	3,465,000		4,969,000
Fair value	3,714,000		5,305,000
Gross unrealized gains	249,000		336,000
Gross unrealized losses	0		0
State and municipal obligations	'		'
Fixed maturities held to maturity	'		'
Total held to maturity amortized cost	428,000		679,000
Fixed maturities held to maturity, Fair Value Disclosure	421,000		676,000
Gross unrealized gains	0		3,000
Gross unrealized losses	7,000		6,000
Fixed maturities available for sale securities	'		'
Amortized cost	12,309,000		17,922,000
Fair value	11,792,000		17,995,000
Gross unrealized gains	22,000		116,000
Gross unrealized losses	539,000		43,000
Corporate bonds and notes	'		'
Fixed maturities available for sale securities	'		'
Amortized cost	7,463,000		15,618,000
Fair value	7,493,000		16,369,000
Gross unrealized gains	457,000		1,110,000
Gross unrealized losses	427,000		359,000
RMBS	'		'
Fixed maturities available for sale securities	'		'
Amortized cost	74,187,000		50,000
Fair value	75,491,000		51,000
Gross unrealized gains	1,304,000		3,000
Gross unrealized losses	0		2,000
Other investments	'		'
Fixed maturities available for sale securities	'		'
Amortized cost	395,000		922,000
Fair value	422,000		976,000
Gross unrealized gains	27,000		54,000
Gross unrealized losses	0		0
Equity securities	'		'
Equity securities available for sale	'		'
Available-for-sale Equity Securities, Amortized Cost Basis	78,106,000	[1]	88,260,000	[2]
Equity securities available for sale—at fair value	121,868,000	[1]	112,139,000	[2]
Gross unrealized gains	43,762,000	[1]	23,879,000	[2]
Gross unrealized losses	0	[1]	0	[2]
Equity Securities Additional Disclosure [Abstract]	'		'
Diversified Equity Mutual Funds	116,700,000		98,900,000
Preferred And Common Stocks	$5,200,000		$13,200,000
[1]	Comprising broadly diversified domestic equity mutual funds ($116.7 million fair value) and various preferred and common stocks invested across numerous companies and industries ($5.2 million fair value) that are carried at cost.
[2]	Comprising broadly diversified domestic equity mutual funds ($98.9 million fair value) and various preferred and common stocks invested across numerous companies and industries ($13.2 million fair value) that are carried at cost.

Note_6_Investments_Investments

Note 6 - Investments Investments Trading Securities (Details) (USD $)

Sep. 30, 2013

Dec. 31, 2012

Aug. 30, 2013

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Primary Mortgage Product [Member]

Securities (Assets)

Securities (Assets)

US government and agency securities

US government and agency securities

State and municipal obligations

State and municipal obligations

Corporate bonds and notes

Corporate bonds and notes

RMBS

RMBS

CMBS

CMBS

Other ABS

Other ABS

Foreign government securities

Foreign government securities

Hybrid Instrument [Member]

Hybrid Instrument [Member]

Equity securities

Equity securities

Other investments

Other investments

2013 Freddie Mac Agreement [Member]

Mortgage Insurance Segment

First Lien Position [Member]

Schedule of Trading Securities and Other Trading Assets [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Trading Securities

$3,250,934,000

$4,094,622,000

'

'

'

$413,169,000

$428,519,000

$623,899,000

$669,975,000

$1,097,034,000

$1,357,175,000

$528,103,000

$663,307,000

$294,752,000

$237,294,000

$204,187,000

$254,102,000

$0

[1]

$117,686,000

[1]

$417,000

$211,944,000

$88,435,000

$153,722,000

$938,000

$898,000

Trading Securities, Change in Unrealized Holding (Loss) Gain

'

'

'

-144,600,000

29,800,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Restricted Investments Held as Collateral for Master Transaction Agreement

'

'

$205,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

[1]

As of September 30, 2013, there were no foreign government securities in our investment portfolio. We sold our investment in foreign government securities during the first quarter of 2013, as our market view of these investments changed, and their performance did not meet our expectations.

Note_6_Investments_Schedule_of

Note 6 - Investments Schedule of Unrealized Losses (Details) (USD $)	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012
	security		security
Schedule of Securities With Unrealized Losses	'	'	'
Other than Temporary Impairment, Credit Losses Recognized in Earnings, Credit Losses on Debt Securities Held	$0	$0	'
Continuous Loss Position Less Than Twelve Months	'	'	'
Number of Securities	0	'	1
Fair value HTM And AFS state and municipal obligations	0	'	31,000
Unrealized losses AFS And HTM state and municipal obligations	0	'	2,000
Continuous Unrealized Loss Position, Twelve Months Or Greater	'	'	'
Number of securities	5	'	8
Fair value HTM And AFS state and municipal obligations	8,482,000	'	11,333,000
Unrealized Losses AFS And HTM state and municipal obligations	973,000	'	408,000
Continuous Loss Position, Total	'	'	'
Number of securities	5	'	9
Fair Value HTM And AFS state and municipal obligations	8,482,000	'	11,364,000
Unrealized losses AFS and HTM state and municipal obligations	973,000	'	410,000
State and municipal obligations	'	'	'
Continuous Loss Position Less Than Twelve Months	'	'	'
Number of Securities	0	'	0
Fair value HTM And AFS state and municipal obligations	0	'	0
Unrealized losses AFS And HTM state and municipal obligations	0	'	0
Continuous Unrealized Loss Position, Twelve Months Or Greater	'	'	'
Number of securities	3	'	2
Fair value HTM And AFS state and municipal obligations	5,506,000	'	6,004,000
Unrealized Losses AFS And HTM state and municipal obligations	546,000	'	49,000
Continuous Loss Position, Total	'	'	'
Number of securities	3	'	2
Fair Value HTM And AFS state and municipal obligations	5,506,000	'	6,004,000
Unrealized losses AFS and HTM state and municipal obligations	546,000	'	49,000
Corporate bonds and notes	'	'	'
Continuous Loss Position Less Than Twelve Months	'	'	'
Number of Securities	0	'	0
Fair value available-for-sale securities	0	'	0
AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAggregateLossesAccumulatedInAOCI	0	'	0
Continuous Unrealized Loss Position, Twelve Months Or Greater	'	'	'
Number of securities	2	'	6
Fair value available-for-sale securities	2,976,000	'	5,329,000
AvailableForSaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAggregateLossesAccumulatedInAOCI	427,000	'	359,000
Continuous Loss Position, Total	'	'	'
Number of securities	2	'	6
Fair value available-for-sale securities	2,976,000	'	5,329,000
AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAggregateLossesAccumulatedInAOCI	427,000	'	359,000
RMBS	'	'	'
Continuous Loss Position Less Than Twelve Months	'	'	'
Number of Securities	'	'	1
Fair value available-for-sale securities	'	'	31,000
AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAggregateLossesAccumulatedInAOCI	'	'	2,000
Continuous Unrealized Loss Position, Twelve Months Or Greater	'	'	'
Number of securities	'	'	0
Fair value available-for-sale securities	'	'	0
AvailableForSaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAggregateLossesAccumulatedInAOCI	'	'	0
Continuous Loss Position, Total	'	'	'
Number of securities	'	'	1
Fair value available-for-sale securities	'	'	31,000
AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAggregateLossesAccumulatedInAOCI	'	'	$2,000

Note_6_Investments_Schedule_of1

Note 6 - Investments Schedule of Contractual Maturities (Details) (USD $)	Sep. 30, 2013		Dec. 31, 2012
In Thousands, unless otherwise specified
Held-to-maturity Securities, Amortized Cost	'		'
Total held to maturity amortized cost	$428		$679
Held-to-maturity Securities, Fair Value	'		'
Fixed maturities held to maturity, Fair Value Disclosure	421		676
Available-for-sale Securities, Amortized Cost	'		'
Fixed maturities available-for-sale, Amortized Cost Basis	97,819		39,481
Available-for-sale Securities, Fair Value	'		'
Total available for sale fair value	98,912		40,696
Debt Securities	'		'
Held-to-maturity Securities, Amortized Cost	'		'
Total held to maturity amortized cost	428		'
Held-to-maturity Securities, Fair Value	'		'
Fixed maturities held to maturity, Fair Value Disclosure	421		'
Available-for-sale Securities, Amortized Cost	'		'
Fixed maturities available-for-sale, Amortized Cost Basis	97,819		'
Available-for-sale Securities, Fair Value	'		'
Total available for sale fair value	98,912		'
Non Asset Backed Security Investments, Contractual Maturities	'		'
Held-to-maturity Securities, Amortized Cost	'		'
Due in one year or less	0	[1]	'
Due after one year through five years	120	[1]	'
Due after five years through ten years	0	[1]	'
Due after ten years	308	[1]	'
Held-to-maturity Securities, Fair Value	'		'
Due in one year or less	0	[1]	'
Due after one year through five years	120	[1]	'
Due after five years through ten years	0	[1]	'
Due after ten years	301	[1]	'
Available-for-sale Securities, Amortized Cost	'		'
Due in one year or less	3,483	[1]	'
Due after one year through five years	5,249	[1]	'
Due after five years through ten years	639	[1]	'
Due after ten years	14,261	[1]	'
Available-for-sale Securities, Fair Value	'		'
Due in one year or less	3,137	[1]	'
Due after one year through five years	5,496	[1]	'
Due after five years through ten years	654	[1]	'
Due after ten years	14,134	[1]	'
RMBS	'		'
Held-to-maturity Securities, Amortized Cost	'		'
Held-to-maturity Securities, Debt Maturities, without Single Maturity Date, Net Carrying Amount	0	[2]	'
Held-to-maturity Securities, Fair Value	'		'
Held-to-maturity Securities, Debt Maturities, without Single Maturity Date, Fair Value	0	[2]	'
Available-for-sale Securities, Amortized Cost	'		'
Available-for-sale Securities, Debt Maturities, without Single Maturity Date, Amortized Cost Basis	74,187	[2]	'
Available-for-sale Securities, Fair Value	'		'
Available-for-sale Securities, Debt Maturities, without Single Maturity Date, Fair Value	$75,491	[2]	'
[1]	Actual maturities may differ as a result of calls before scheduled maturity.
[2]	RMBS are shown separately given their varying maturity dates.

Note_7_Reinsurance_Reinsurance

Note 7 - Reinsurance Reinsurance (Details) (USD $)

3 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

1 Months Ended

3 Months Ended

9 Months Ended

1 Months Ended

3 Months Ended

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Dec. 31, 2012

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Jan. 31, 2012

Mar. 31, 2012

Sep. 30, 2013

Sep. 30, 2013

Jan. 31, 2012

Jan. 31, 2013

Mar. 31, 2013

Reinsurance Premiums for Insurance Companies, by Product Segment [Member]

Reinsurance Premiums for Insurance Companies, by Product Segment [Member]

Reinsurance Premiums for Insurance Companies, by Product Segment [Member]

Reinsurance Premiums for Insurance Companies, by Product Segment [Member]

Initial Quota Share Reinsurance Transaction [Member]

Initial Quota Share Reinsurance Transaction [Member]

Initial Quota Share Reinsurance Transaction [Member]

Initial Quota Share Reinsurance Transaction [Member]

January 2012 Assured Guaranty Ceded Public Finance Transaction [Member]

January 2012 Assured Guaranty Transaction [Member]

Second Quota Share Reinsurance Transaction [Member]

Second Quota Share Reinsurance Transaction [Member]

Reinsurance [Member]

Reinsurance [Member]

Reinsurance [Member]

Radian Guaranty [Member]

Radian Guaranty [Member]

Radian Guaranty [Member]

Radian Guaranty [Member]

Radian Asset Assurance [Member]

Radian Asset Assurance [Member]

Radian Guaranty [Member]

Radian Guaranty [Member]

January 2012 Assured Guaranty Reinsurance Commutation [Member]

2012 FGIC Commutation [Member]

2012 FGIC Commutation [Member]

counterparty

Radian Asset Assurance [Member]

Radian Asset Assurance [Member]

Radian Asset Assurance [Member]

Reinsurance Premiums for Insurance Companies, by Product Segment [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of Derivative Counterparties Involved in Commutation

'

'

'

'

'

'

'

'

'

'

'

'

'

1

'

'

'

'

'

'

Reduction In Net Par Outstanding

'

'

'

'

'

'

'

'

'

'

'

'

'

$1,800,000,000

'

'

'

$13,800,000,000

$822,200,000

'

Ceded Credit Risk, Unearned Premiums

75,800,000

'

75,800,000

'

64,500,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Net premiums written-insurance [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Direct Premiums Written

268,886,000

232,086,000

784,180,000

650,188,000

'

268,886,000

232,086,000

784,180,000

650,188,000

'

'

'

'

'

'

'

'

'

'

'

Assumed Premiums Written

-126,000

-918,000

-10,729,000

-89,434,000

'

-126,000

-918,000

-10,729,000

-89,434,000

'

'

'

'

'

'

'

'

'

'

-12,600,000

Ceded Premiums Written

-17,918,000

-21,891,000

-64,195,000

-91,867,000

'

-17,918,000

-21,891,000

-64,195,000

-91,867,000

-5,551,000

-16,378,000

-17,573,000

-41,855,000

'

'

-8,233,000

-32,253,000

'

'

'

Net premiums written-insurance

250,842,000

209,277,000

709,256,000

468,887,000

'

250,842,000

209,277,000

709,256,000

468,887,000

'

'

'

'

'

-119,800,000

'

'

'

'

'

Premiums Earned, Net [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Direct Premiums Earned

'

'

'

'

'

228,162,000

201,988,000

660,687,000

590,016,000

'

'

'

'

'

'

'

'

'

'

'

Assumed Premiums Earned

'

'

'

'

'

1,943,000

3,408,000

10,573,000

-5,573,000

'

'

'

'

'

'

'

'

'

'

-2,500,000

Ceded Premiums Earned

'

'

'

'

'

-18,121,000

-14,433,000

-53,564,000

-39,336,000

-7,216,000

-5,291,000

-22,711,000

-8,389,000

'

'

-5,099,000

-12,220,000

'

'

'

Net premiums earned-insurance

$211,984,000

$190,963,000

$617,696,000

$545,107,000

'

$211,984,000

$190,963,000

$617,696,000

$545,107,000

'

'

'

'

'

($22,200,000)

'

'

'

'

'

Note_7_Reinsurance_Quota_Share

Note 7 - Reinsurance Quota Share Reinsurance Transactions (Details) (USD $)

3 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Jun. 30, 2012

Sep. 30, 2013

Sep. 30, 2013

Dec. 31, 2012

Dec. 31, 2012

Dec. 31, 2014

Dec. 31, 2015

Apr. 02, 2013

Mar. 31, 2013

Dec. 31, 2012

Dec. 31, 2012

Initial Quota Share Reinsurance Transaction [Member]

Initial Quota Share Reinsurance Transaction [Member]

Initial Quota Share Reinsurance Transaction [Member]

Initial Quota Share Reinsurance Transaction [Member]

Initial Quota Share Reinsurance Transaction [Member]

Second Quota Share Reinsurance Transaction [Member]

Second Quota Share Reinsurance Transaction [Member]

Minimum [Member]

Maximum [Member]

Scenario, Forecast [Member]

Scenario, Forecast [Member]

Conventional Mortgage Loan [Member]

Conventional Mortgage Loan [Member]

Conventional Mortgage Loan [Member]

Non Conventional Mortgage Loan [Member]

Radian Guaranty [Member]

Radian Guaranty [Member]

Radian Guaranty [Member]

Radian Guaranty [Member]

Radian Guaranty [Member]

Radian Guaranty [Member]

Radian Guaranty [Member]

Second Quota Share Reinsurance Transaction [Member]

Second Quota Share Reinsurance Transaction [Member]

Initial Quota Share Reinsurance Transaction [Member]

Second Quota Share Reinsurance Transaction [Member]

Second Quota Share Reinsurance Transaction [Member]

Second Quota Share Reinsurance Transaction [Member]

Second Quota Share Reinsurance Transaction [Member]

Second Quota Share Reinsurance Transaction [Member]

Radian Guaranty [Member]

Radian Guaranty [Member]

Radian Guaranty [Member]

Radian Guaranty [Member]

Radian Guaranty [Member]

Radian Guaranty [Member]

Reinsurance Transaction Details [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Percentage of New Insurance Written To Be Ceded

'

'

'

'

'

'

'

'

20.00%

'

'

'

'

'

'

'

'

'

'

First Lien Primary Mortgage Insurance Risk In Force Ceded

'

'

'

'

$1,400,000,000

'

$1,400,000,000

'

'

$1,200,000,000

$1,200,000,000

$750,000,000

$2,000,000,000

'

'

'

'

'

'

Percentage of Reinsurance Able To Be Commuted

'

'

'

'

'

'

'

'

'

'

'

'

'

67.00%

50.00%

'

'

'

'

Percentage of Premium and Losses Incurred To Be Ceded

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

5.00%

20.00%

20.00%

100.00%

Ceding Commission Percentage

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

35.00%

25.00%

Ceded Commission Percentage Charged on Ceded Risk in Force in the Event of Unexercised Commutation Option

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

30.00%

'

Ceded Premiums Written

17,918,000

21,891,000

64,195,000

91,867,000

5,551,000

16,378,000

17,573,000

41,855,000

'

8,233,000

32,253,000

'

'

'

'

'

'

'

'

Ceded Premiums Earned

'

'

'

'

7,216,000

5,291,000

22,711,000

8,389,000

'

5,099,000

12,220,000

'

'

'

'

'

'

'

'

Fees and Commissions

'

'

'

'

$1,388,000

$4,095,000

$4,393,000

$10,464,000

'

$2,882,000

$11,289,000

'

'

'

'

'

'

'

'

Note_8_Losses_and_LAE_Losses_a

Note 8 - Losses and LAE Losses and LAE for Mortgage Insurance (Details) (USD $)	Sep. 30, 2013	Dec. 31, 2012	Sep. 30, 2012
In Thousands, unless otherwise specified
Reserve for losses and loss adjustment expenses	'	'	'
Liability for Claims and Claims Adjustment Expense	$2,346,879	$3,149,936	'
Mortgage Insurance Segment	'	'	'
Reserve for losses and loss adjustment expenses	'	'	'
Liability for Claims and Claims Adjustment Expense, Property Casualty Liability	2,314,785	3,083,608	3,046,706
Financial Guaranty Segment	'	'	'
Reserve for losses and loss adjustment expenses	'	'	'
Liability for Claims and Claims Adjustment Expense, Financial Guarantee Insurance Contracts	$32,094	$66,328	$72,891

Note_8_Losses_and_LAE_Mortgage

Note 8 - Losses and LAE Mortgage Insurance Loss Reserves Rollforward (Details) (USD $)

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Dec. 31, 2011

Jul. 12, 2013

Aug. 30, 2013

Sep. 30, 2013

Jul. 31, 2013

Aug. 29, 2015

Mortgage Insurance Segment

Mortgage Insurance Segment

Mortgage Insurance Segment

Mortgage Insurance Segment

Mortgage Insurance Segment

Mortgage Insurance Segment

Mortgage Insurance Segment

Mortgage Insurance Segment

Pool Insurance Mortgage Insurance Product [Member]

Primary Mortgage Product [Member]

Primary Mortgage Product [Member]

Primary Mortgage Product [Member]

Primary Mortgage Product [Member]

Primary Mortgage Product [Member]

Primary Mortgage Product [Member]

Primary Mortgage Product [Member]

Primary Mortgage Product [Member]

Primary Mortgage Product [Member]

Primary Mortgage Product [Member]

Primary Mortgage Product [Member]

Default To Claim Rate Assumptions Twelve Or More Missed Payments [Member]

Default To Claim Rate Assumptions Two Missed Payments [Member]

Default To Claim Rate Assumptions Three Missed Payments [Member]

Smart Home [Member]

Mortgage Insurance Segment

Mortgage Insurance Segment

Mortgage Insurance Segment

2013 Freddie Mac Agreement [Member]

2013 Freddie Mac Agreement [Member]

2013 Freddie Mac Agreement [Member]

2013 Freddie Mac Agreement [Member]

2013 Freddie Mac Agreement [Member]

2013 Freddie Mac Agreement [Member]

2013 Freddie Mac Agreement [Member]

2013 Freddie Mac Agreement [Member]

Scenario, Forecast [Member]

payment

payment

payment

First Lien Position [Member]

First Lien Position [Member]

First Lien Position [Member]

First Lien Position [Member]

First Lien Position [Member]

First Lien Position [Member]

First Lien Position [Member]

First Lien Position [Member]

Minimum [Member]

Mortgage Insurance Segment

Mortgage Insurance Segment

Mortgage Insurance Segment

Mortgage Insurance Segment

Mortgage Insurance Segment

Mortgage Insurance Segment

Mortgage Insurance Segment

Mortgage Insurance Segment

2013 Freddie Mac Agreement [Member]

loan

loan

First Lien Position [Member]

Mortgage Insurance Segment

Loss reserve [Roll Forward]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Balance at beginning of period

'

'

$2,690,861,000

$3,155,343,000

$3,083,608,000

$3,247,900,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Less reinsurance recoverables

57,260,000

89,204,000

58,427,000

[1]

97,845,000

[1]

83,238,000

[1]

151,569,000

[1]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Balance at beginning of period, net of reinsurance recoverables

'

'

2,632,434,000

3,057,498,000

3,000,370,000

3,096,331,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Add losses and LAE incurred in respect of default notices reported and unreported in [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Liability for Unpaid Claims and Claims Adjustment Expense, Incurred Claims Current Year

'

'

140,015,000

[2]

248,806,000

[2]

477,155,000

[2]

686,080,000

[2]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Liability for Unpaid Claims and Claims Adjustment Expense, Incurred Claims, Prior Years

'

'

11,997,000

-77,001,000

-56,777,000

-71,468,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Total incurred

'

'

152,012,000

171,805,000

420,378,000

614,612,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Deduct paid claims and LAE related to [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Current year

'

'

21,334,000

[2]

2,912,000

[2]

21,483,000

[2]

3,185,000

[2]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Prior years

'

'

498,002,000

269,486,000

1,134,155,000

750,853,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Paid losses and LAE

'

'

519,336,000

272,398,000

1,155,638,000

754,038,000

'

'

'

'

'

'

'

'

'

'

'

370,000,000

'

'

'

'

Balance at end of period, net of reinsurance recoverables

'

'

2,265,110,000

2,956,905,000

2,265,110,000

2,956,905,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Add reinsurance recoverables

57,260,000

89,204,000

49,675,000

[1]

89,801,000

[1]

49,675,000

[1]

89,801,000

[1]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Balance at end of period

'

'

2,314,785,000

3,046,706,000

2,314,785,000

3,046,706,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Mortgage Loans on Real Estate, Number of Loans

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

25,760

'

'

'

'

'

Mortgage Loans on Real Estate, Number of Delinquent Loans

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

9,756

'

Mortgage Loans on Real Estate, Number of Re-Performing Loans

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

4,586

'

Concentration Risk, Credit Risk, Financial Instrument, Maximum Exposure

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

840,000,000

'

'

'

'

'

'

Total Consideration for Defaulted Loans

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

625,000,000

'

'

'

Net Consideration for Defaulted Loans

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

255,000,000

'

'

'

Restricted Investments Held as Collateral for Master Transaction Agreement

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

205,000,000

'

'

'

Restricted Investments Held as Collateral for Master Transaction Agreement, Gross

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

215,000,000

'

'

'

Loss Mitigation Activity

'

'

'

'

'

'

'

'

'

'

'

'

'

2,400,000

'

'

'

'

10,000,000

'

'

'

Not Final Loss Mitigation Activity

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

137,300,000

'

'

Termination Trigger Based on Amount of Restricted Investments

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

0

Provision for Loan Losses Expensed

'

'

'

'

'

'

'

'

'

'

'

'

'

'

22,000,000

22,000,000

'

'

'

'

'

'

Claim Curtailments, Gross

'

'

16,000,000

6,000,000

42,000,000

15,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Increase (Decrease) in Reinsurance Recoverable

'

'

'

'

'

'

'

'

'

-43,600,000

'

'

'

'

'

'

'

'

'

'

'

'

Increase (Decrease) in Loss and Loss Adjustment Expense Reserve

'

'

'

'

'

'

'

'

'

'

0

'

'

'

'

'

'

'

'

'

'

'

Default To Claim Rate Detail [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Weighted Average Default To Claim Rate Assumption Net Of Denials Rescissions and Reinstatements

'

'

'

'

47.00%

'

'

'

'

'

'

50.00%

49.00%

'

'

'

'

'

'

'

'

'

Weighted Average Default To Claim Rate Assumption Excluding Pending Claims Net Of Denials And Rescissions

'

'

'

'

'

'

'

'

'

'

'

41.00%

'

'

'

'

'

'

'

'

'

'

Default To Claim Rate Estimate Net Of Rescission And Denial Estimates For Insured Loans That Missed Two To Three Monthly Payments

'

'

'

'

'

'

'

'

'

'

'

22.00%

'

'

'

'

'

'

'

'

'

'

Default To Claim Estimate Net Of Rescission And Denial Estimates For Loans That Missed Twelve Or More Monthly Payments

'

'

'

'

'

'

'

'

'

'

'

49.00%

'

'

'

'

'

'

'

'

'

'

Number Of Payments Missed For Insured Loans

'

'

'

'

'

'

12

2

3

'

'

'

'

'

'

'

'

'

'

'

'

'

Claim Severity Detail [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Percentage Point Change In Severity For Assumption Shift Analysis

'

'

1.00%

'

1.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

First Lien Primary Claim Severity

'

'

'

'

28.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Impact To Loss Reserves Based On One Percentage Change In Primary Claim Severity

'

'

63,000,000

'

63,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

First Lien Pool Claim Severity

'

'

'

'

45.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Impact To Loss Reserves Based On One Percentage Change In Pool Claim Severity

'

'

3,000,000

'

3,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Impact To Loss Reserves Based On One Percentage Increase In Default To Claim Rate

'

'

$39,000,000

'

$39,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

[1]

Related to ceded losses on captive reinsurance transactions, capital markets reinsurance transactions (“Smart Home”) and QSR transactions.

[2]

Related to underlying defaulted loans with a most recent date of default notice 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.

Note_8_Losses_and_LAE_Rescissi

Note 8 - Losses and LAE Rescissions And Denials (Details) (USD $)

9 Months Ended

3 Months Ended

9 Months Ended

12 Months Ended

24 Months Ended

In Millions, unless otherwise specified

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Dec. 31, 2012

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Claims Denied in the Last Twelve Months [Member]

Policies Rescinded in the Last Twenty Four Months [Member]

Mortgage Insurance Segment

Mortgage Insurance Segment

Mortgage Insurance Segment

Mortgage Insurance Segment

Mortgage Insurance Segment

Mortgage Insurance Segment

Mortgage Insurance Segment

Mortgage Insurance Segment

Mortgage Insurance Segment

Mortgage Insurance Segment

Mortgage Insurance Segment

Minimum [Member]

Minimum [Member]

Maximum [Member]

Maximum [Member]

Claims Denied in the Last Twelve Months [Member]

Policies Rescinded in the Last Twenty Four Months [Member]

Reinstated Claim Denials [Member]

Reinstated Rescissions [Member]

Rescissions [Member]

Rescissions [Member]

Mortgage Insurance Segment

Mortgage Insurance Segment

Mortgage Insurance Segment

Mortgage Insurance Segment

Claims Denied in the Last Twelve Months [Member]

Policies Rescinded in the Last Twenty Four Months [Member]

Claims Denied in the Last Twelve Months [Member]

Policies Rescinded in the Last Twenty Four Months [Member]

Rescissions And Denials [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Decrease To Our Loss Reserves Due To Estimated Rescissions And Denials

'

'

$291

'

$291

'

$455

'

'

'

'

'

'

'

'

'

'

Increase To Our Loss Reserves Due To Estimated Future Reinstatements Of Previously Rescinded Policies And Denied Claims

'

'

286

'

286

'

303

'

'

'

'

'

'

'

'

'

'

Liability for Unpaid Claims and Claims Adjustment Expense, Incurred but Not Reported (IBNR) Claims, Including Previously Submitted Claims, Amount

'

'

268

'

268

'

323

'

'

173

78

'

'

'

'

'

'

Gross Exposure Related to Denied Claims

'

'

'

'

'

'

'

381

'

'

'

'

'

'

'

'

'

Gross Exposure Related to Rescinded Policies

'

'

'

'

'

'

'

'

450

'

'

'

'

'

'

'

'

Claims Rescissions and Denials [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Rescissions, Net of Reinstatements

'

'

21.6

95.8

56.5

193.7

'

'

'

'

'

'

'

'

'

'

'

Claim Denials, Net of Reinstatements

'

'

4.1

131.9

131.3

537.1

'

'

'

'

'

'

'

'

'

'

'

Claim Rescissions And Denials, Net of Reinstatements

'

'

25.7

[1]

227.7

[1]

187.8

[1]

730.8

[1]

'

'

'

'

'

'

'

'

'

'

'

Gross Reinstatement Percentage Assumption for Denied Claims

'

'

'

'

'

'

'

'

'

'

'

'

'

0.00%

'

60.00%

'

Gross Reinstatement Percentage Assumption on Rescinded Policies

'

'

'

'

'

'

'

'

'

'

'

'

'

'

0.00%

'

20.00%

Number of Months That the Gross Reinstatement Rate Used in Estimating Claim Liability Declines

'12 months

'24 months

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Accrued Liability For Premiums Expected To Be Refunded From Rescissions

'

'

'

'

'

'

'

'

'

'

'

$24

$48

'

'

'

'

[1]

Includes an amount related to a small number of submitted claims that were subsequently withdrawn by the insured.

Note_8_Losses_and_LAE_Cumulati

Note 8 - Losses and LAE Cumulative Rescission and Denial Rates (Details) (Mortgage Insurance Segment)	9 Months Ended
	Sep. 30, 2013
Q1 2011 [Member]	'
Cumulative Rescission and Denial Rates [Line Items]	'
Claim Received Quarter	'Q1 2011
Cumulative Rescission Rate For Each Quarter	20.40%	[1]
Percentage Of Claims Resolved	99.00%	[2]
Q2 2011 [Member]	'
Cumulative Rescission and Denial Rates [Line Items]	'
Claim Received Quarter	'Q2 2011
Cumulative Rescission Rate For Each Quarter	25.40%	[1]
Percentage Of Claims Resolved	99.00%	[2]
Q3 2011 [Member]	'
Cumulative Rescission and Denial Rates [Line Items]	'
Claim Received Quarter	'Q3 2011
Cumulative Rescission Rate For Each Quarter	30.90%	[1]
Percentage Of Claims Resolved	99.00%	[2]
Q4 2011 [Member]	'
Cumulative Rescission and Denial Rates [Line Items]	'
Claim Received Quarter	'Q4 2011
Cumulative Rescission Rate For Each Quarter	27.00%	[1]
Percentage Of Claims Resolved	99.00%	[2]
Q1 2012 [Member]	'
Cumulative Rescission and Denial Rates [Line Items]	'
Claim Received Quarter	'Q1 2012
Cumulative Rescission Rate For Each Quarter	23.50%	[1]
Percentage Of Claims Resolved	98.00%	[2]
Q2 2012 [Member]	'
Cumulative Rescission and Denial Rates [Line Items]	'
Claim Received Quarter	'Q2 2012
Cumulative Rescission Rate For Each Quarter	20.70%	[1]
Percentage Of Claims Resolved	97.00%	[2]
Q3 2012 [Member]	'
Cumulative Rescission and Denial Rates [Line Items]	'
Claim Received Quarter	'Q3 2012
Cumulative Rescission Rate For Each Quarter	17.80%	[1]
Percentage Of Claims Resolved	89.00%	[2]
Q4 2012 [Member]	'
Cumulative Rescission and Denial Rates [Line Items]	'
Claim Received Quarter	'Q4 2012
Cumulative Rescission Rate For Each Quarter	16.00%	[1]
Percentage Of Claims Resolved	78.00%	[2]
Q1 2013 [Member]	'
Cumulative Rescission and Denial Rates [Line Items]	'
Claim Received Quarter	'Q1 2013
Cumulative Rescission Rate For Each Quarter	16.40%	[1]
Percentage Of Claims Resolved	57.00%	[2]
[1]	Projected net cumulative rescission/denial rates represent the ratio of claims rescinded or denied to claims received (by claim count). Rescissions and denials are net of actual reinstatements, plus our current estimate for expected reinstatements of previously rescinded policies or denied claims (excluding certain potential reinstatements we are in the process of discussing with servicers). These projected amounts represent the cumulative rates for each quarter as of September 30, 2013. Until all of the claims received during the periods shown have been internally resolved, the rescission/denial rates for each quarter will be subject to change; these rates also will remain subject to change based on differences between estimated and actual reinstatements of previously rescinded policies or denied claims.
[2]	The percentage of claims resolved for each quarter presented in the table above represents the number of claims that have been internally resolved as a percentage of the total number of claims received for that specific quarter. A claim is considered internally resolved when it is either paid or it is concluded that the claim should be denied or rescinded, though such denials and rescissions could be challenged and potentially reinstated or overturned. For the second and third quarters of 2013, a significant portion of claims received for those quarters have not been internally resolved; therefore, we do not believe the projected net cumulative rescission/denial rates for those periods are presently meaningful.

Note_9_Financial_Guaranty_Insu2

Note 9 - Financial Guaranty Insurance Contracts Financial Guaranty Claim Liabilities by Surveillance Categories (Details) (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013
	contract
Financial Guaranty Claim Liabilities by Surveillance Categories	'
Number of policies	269
Remaining weighted-average contract period (in years)	'19 years
Insured contractual payments outstanding:	'
Principal	$1,444,060
Interest	735,716
Total insured contractual payments outstanding	2,179,776
Gross claim liability	261,676
Reductions of gross claim liability:	'
Gross potential recoveries	316,161
Discount, Net	-98,362
Net claim liability/(asset) (prior to reduction for unearned premium)	43,877
Unearned premium revenue	26,027
Net claim liability/(asset) reported in the balance sheet	30,538
Reinsurance recoverable	0
Performing	'
Financial Guaranty Claim Liabilities by Surveillance Categories	'
Number of policies	6
Remaining weighted-average contract period (in years)	'22 years
Insured contractual payments outstanding:	'
Principal	1,721
Interest	156
Total insured contractual payments outstanding	1,877
Gross claim liability	1
Reductions of gross claim liability:	'
Gross potential recoveries	0
Discount, Net	0
Net claim liability/(asset) (prior to reduction for unearned premium)	1
Unearned premium revenue	5
Net claim liability/(asset) reported in the balance sheet	0
Reinsurance recoverable	0
Special Mention	'
Financial Guaranty Claim Liabilities by Surveillance Categories	'
Number of policies	106
Remaining weighted-average contract period (in years)	'18 years
Insured contractual payments outstanding:	'
Principal	707,897
Interest	382,859
Total insured contractual payments outstanding	1,090,756
Gross claim liability	20,305
Reductions of gross claim liability:	'
Gross potential recoveries	6,744
Discount, Net	699
Net claim liability/(asset) (prior to reduction for unearned premium)	12,862
Unearned premium revenue	15,298
Net claim liability/(asset) reported in the balance sheet	6,398
Reinsurance recoverable	0
Intensified Surveillance	'
Financial Guaranty Claim Liabilities by Surveillance Categories	'
Number of policies	72
Remaining weighted-average contract period (in years)	'20 years
Insured contractual payments outstanding:	'
Principal	622,049
Interest	322,434
Total insured contractual payments outstanding	944,483
Gross claim liability	206,597
Reductions of gross claim liability:	'
Gross potential recoveries	254,152
Discount, Net	-97,106
Net claim liability/(asset) (prior to reduction for unearned premium)	49,551
Unearned premium revenue	10,724
Net claim liability/(asset) reported in the balance sheet	42,677
Reinsurance recoverable	0
Case Reserve	'
Financial Guaranty Claim Liabilities by Surveillance Categories	'
Number of policies	85
Remaining weighted-average contract period (in years)	'19 years
Insured contractual payments outstanding:	'
Principal	112,393
Interest	30,267
Total insured contractual payments outstanding	142,660
Gross claim liability	34,773
Reductions of gross claim liability:	'
Gross potential recoveries	55,265
Discount, Net	-1,955
Net claim liability/(asset) (prior to reduction for unearned premium)	-18,537
Unearned premium revenue	0
Net claim liability/(asset) reported in the balance sheet	-18,537
Reinsurance recoverable	$0

Note_9_Financial_Guaranty_Insu3

Note 9 - Financial Guaranty Insurance Contracts Premium Receivable and Unearned Premium NPV and Accretion (Details) (USD $)	9 Months Ended		3 Months Ended		9 Months Ended
	Sep. 30, 2013	Dec. 31, 2012	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
			Premiums Earned Accretion	Premiums Earned Accretion	Premiums Earned Accretion	Premiums Earned Accretion
Premiums receivable	$26,000,000	$28,900,000	'	'	'	'
Unearned premiums	28,500,000	33,600,000	'	'	'	'
Accretion of Premium Receivable and Unearned Premium	'	'	200,000	200,000	700,000	800,000
Financial Guarantee Insurance Contracts, Premium Receivable, Premium Expected to be Collected	$32,700,000	'	'	'	'	'
Premium Receivable, Weighted Average Risk Free Discount Rate	2.60%	'	'	'	'	'

Note_9_Financial_Guaranty_Insu4

Note 9 - Financial Guaranty Insurance Contracts Adjustments To Premiums Earned For Financial Guaranty Contracts (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Adjustments To Premiums Earned For Financial Guaranty Contracts [Line Items]	'	'	'	'
Refundings	$6,979,000	$7,322,000	$22,020,000	$26,029,000
Recaptures/commutations	0	0	-2,447,000	-16,269,000
Unearned premium acceleration upon establishment of case reserves	0	669,000	69,000	669,000
Reinsurance agreements	0	0	0	-5,995,000
Foreign exchange revaluation, gross of commissions	112,000	616,000	-975,000	-153,000
Adjustments to installment premiums, gross of commissions	-155,000	-2,390,000	2,527,000	-2,273,000
Total Adjustment To Premiums Earned For Financial Guaranty Contracts	$6,936,000	$6,217,000	$21,194,000	$2,008,000

Note_9_Financial_Guaranty_Insu5

Note 9 - Financial Guaranty Insurance Contracts Future Premium Revenues For Financial Guaranty Contracts (Details) (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013
Financial Guarantee Insurance Contracts, Future Expected Premium Revenue to be Recognized, Next Rolling Quarter [Member]	'
Future Premium Revenue To Be Recognized [Line Items]	'
Unearned premiums	$192,191
Amortization of Unearned Premium	8,414
Accretion of premium receivable	210
Total Premium Revenue to be recognized	8,624
Financial Guarantee Insurance Contracts, Future Expected Premium Revenue to be Recognized, Year Two [Member]	'
Future Premium Revenue To Be Recognized [Line Items]	'
Unearned premiums	168,705
Amortization of Unearned Premium	23,486
Accretion of premium receivable	794
Total Premium Revenue to be recognized	24,280
Financial Guarantee Insurance Contracts, Future Expected Premium Revenue to be Recognized, Year Three [Member]	'
Future Premium Revenue To Be Recognized [Line Items]	'
Unearned premiums	152,202
Amortization of Unearned Premium	16,503
Accretion of premium receivable	727
Total Premium Revenue to be recognized	17,230
Financial Guarantee Insurance Contracts, Future Expected Premium Revenue to be Recognized, Year Four [Member]	'
Future Premium Revenue To Be Recognized [Line Items]	'
Unearned premiums	138,307
Amortization of Unearned Premium	13,895
Accretion of premium receivable	683
Total Premium Revenue to be recognized	14,578
Financial Guarantee Insurance Contracts, Future Expected Premium Revenue to be Recognized, Year Five [Member]	'
Future Premium Revenue To Be Recognized [Line Items]	'
Unearned premiums	125,425
Amortization of Unearned Premium	12,882
Accretion of premium receivable	624
Total Premium Revenue to be recognized	13,506
Financial Guarantee Insurance Contracts, Future Expected Premium Revenue to be Recognized, Within Year Five [Member]	'
Future Premium Revenue To Be Recognized [Line Items]	'
Unearned premiums	125,425
Amortization of Unearned Premium	75,180
Accretion of premium receivable	3,038
Total Premium Revenue to be recognized	78,218
Financial Guarantee Insurance Contracts, Premium Receivable, Premium Expected to be Collected, Year Six Through Ten [Member]	'
Future Premium Revenue To Be Recognized [Line Items]	'
Unearned premiums	71,950
Amortization of Unearned Premium	53,475
Accretion of premium receivable	2,381
Total Premium Revenue to be recognized	55,856
Financial Guarantee Insurance Contracts, Future Expected Premium Revenue to be Recognized, Year 11 Through 15 [Member]	'
Future Premium Revenue To Be Recognized [Line Items]	'
Unearned premiums	35,983
Amortization of Unearned Premium	35,967
Accretion of premium receivable	1,485
Total Premium Revenue to be recognized	37,452
Financial Guarantee Insurance Contracts, Future Expected Premium Revenue to be Recognized, Year 16 Through 20 [Member]	'
Future Premium Revenue To Be Recognized [Line Items]	'
Unearned premiums	15,223
Amortization of Unearned Premium	20,760
Accretion of premium receivable	924
Total Premium Revenue to be recognized	21,684
Financial Guarantee Insurance Contracts, Future Expected Premium Revenue to be Recognized, Greater than 20 Years [Member]	'
Future Premium Revenue To Be Recognized [Line Items]	'
Unearned premiums	0
Amortization of Unearned Premium	15,223
Accretion of premium receivable	1,075
Total Premium Revenue to be recognized	16,298
Total Financial Guarantee Insurance Contracts Future Premium Revenue to be Recognized [Member]	'
Future Premium Revenue To Be Recognized [Line Items]	'
Unearned premiums	0
Amortization of Unearned Premium	200,605
Accretion of premium receivable	8,903
Total Premium Revenue to be recognized	$209,508

Note_9_Financial_Guaranty_Insu6

Note 9 - Financial Guaranty Insurance Contracts Schedule of Significant Components Of Change In Financial Guaranty Claim Liability (Details) (USD $)	Sep. 30, 2013	Dec. 31, 2012	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2012	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013
			Trade Credit Reinsurance and Surety Insurance [Member]	Trade Credit Reinsurance and Surety Insurance [Member]	Project Finance Credit [Member]	Financial Guarantee Insurance Product Line [Member]	Financial Guarantee Insurance Product Line [Member]	Financial Guarantee Insurance Product Line [Member]	Financial Guarantee Insurance Product Line [Member]	Financial Guarantee Insurance Product Line [Member]	2012 FGIC Commutation [Member]
						Sovereign Debt [Member]	Financial Guaranty Segment	Financial Guaranty Segment	Financial Guaranty Segment	Financial Guaranty Segment	Financial Guarantee Insurance Product Line [Member]
Claim liability at beginning of period	$2,346,879,000	$3,149,936,000	$1,600,000	$2,300,000	'	'	$23,611,000	$92,645,000	$64,291,000	$60,550,000	'
(Decrease)/increase in gross claim liability	'	'	'	'	'	'	-28,486,000	37,559,000	-56,477,000	199,257,000	'
Decrease/(increase) in gross potential recoveries	'	'	'	'	'	'	8,896,000	-69,624,000	35,339,000	-261,339,000	'
Decrease/(increase) in discount	'	'	'	'	'	'	24,075,000	36,312,000	30,208,000	102,457,000	'
Decrease/(increase) in unearned premiums	'	'	'	'	'	'	926,000	225,000	213,000	-1,683,000	'
Paid Losses and LAE Current Year	'	'	'	'	'	'	70,000	-334,000	103,000	0	41,600,000
Paid Losses and LAE Prior Years	'	'	'	'	'	'	-1,586,000	26,843,000	42,933,000	28,634,000	'
Paid losses and LAE	'	'	'	'	'	23,500,000	-1,516,000	26,509,000	43,036,000	28,634,000	'
Claim liability at end of period	2,346,879,000	3,149,936,000	1,600,000	2,300,000	'	'	30,538,000	70,608,000	30,538,000	70,608,000	'
Components of incurred losses and LAE [Abstract]	'	'	'	'	'	'	'	'	'	'	'
Liability for Unpaid Claims and Claims Adjustment Expense, Incurred Claims Current Year	'	'	'	'	'	'	866,000	8,750,000	1,249,000	8,801,000	'
Liability for Unpaid Claims and Claims Adjustment Expense, Incurred Claims, Prior Years	'	'	'	'	'	'	4,545,000	-4,278,000	8,034,000	29,891,000	'
Total incurred	'	'	'	'	'	'	5,411,000	4,472,000	9,283,000	38,692,000	'
Components of (decrease)/increase in discount [Abstract]	'	'	'	'	'	'	'	'	'	'	'
(Increase)/decrease in discount related to claim liabilities established in current period	'	'	'	'	'	'	268,000	36,094,000	103,000	101,776,000	'
Decrease in discount related to existing claim liabilites	'	'	'	'	'	'	23,807,000	218,000	30,105,000	681,000	'
Decrease/(increase) in discount	'	'	'	'	'	'	24,075,000	36,312,000	30,208,000	102,457,000	'
Net Par Outstanding	'	'	'	'	$70,000,000	'	'	'	'	'	'

Note_9_Financial_Guaranty_Insu7

Note 9 - Financial Guaranty Insurance Contracts Weighted Average Risk Free Rates For Financial Guaranty (Details)	9 Months Ended		12 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012	Dec. 31, 2011
Weighted Average Discount Rate [Line Items]	'	'	'	'
Weighted Average Discount Rate, Percent	3.00%	1.94%	2.00%	2.80%

Note_10_LongTerm_Debt_Schedule

Note 10 - Long-Term Debt Schedule of Long Term Debt (Details) (USD $)

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Mar. 31, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Five Point Six Two Five Percent Senior Notes due 2013 [Member]

Five Point Six Two Five Percent Senior Notes due 2013 [Member]

Five Point Three Seven Five Percent Senior Notes due 2015 [Member]

Five Point Three Seven Five Percent Senior Notes due 2015 [Member]

Nine Percent Notes Due 2017 [Member]

Nine Percent Notes Due 2017 [Member]

Three Percent Convertible Senior Notes due 2017 [Member]

Three Percent Convertible Senior Notes due 2017 [Member]

Two Point Two Five Percent Convertible Notes Due 2019 [Member]

Two Point Two Five Percent Convertible Notes Due 2019 [Member]

Convertible Debt [Member]

Convertible Debt [Member]

Convertible Debt [Member]

Debt Exchange 2013 [Member]

Debt Exchange 2013 [Member]

Debt Offering 2013 [Member]

Debt Offering 2013 [Member]

Redemption Trigger based on Company Stock Price [Member]

Conversion Trigger based on Company Stock Price [Member]

Conversion Trigger based on Trading Price of Debt Versus Company Stock Price [Member]

Three Percent Convertible Senior Notes due 2017 [Member]

Three Percent Convertible Senior Notes due 2017 [Member]

Two Point Two Five Percent Convertible Notes Due 2019 [Member]

Five Point Three Seven Five Percent Senior Notes due 2015 [Member]

Nine Percent Notes Due 2017 [Member]

Convertible Debt [Member]

Convertible Debt [Member]

Convertible Debt [Member]

Convertible Debt [Member]

Convertible Debt [Member]

Two Point Two Five Percent Convertible Notes Due 2019 [Member]

Two Point Two Five Percent Convertible Notes Due 2019 [Member]

Two Point Two Five Percent Convertible Notes Due 2019 [Member]

Two Point Two Five Percent Convertible Notes Due 2019 [Member]

Two Point Two Five Percent Convertible Notes Due 2019 [Member]

D

D

D

Debt Instrument [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Long-term Debt, Gross

'

'

'

'

'

'

'

'

'

'

'

'

$450,000,000

'

$400,000,000

'

$195,500,000

$400,000,000

'

'

'

'

Debt Instrument, Interest Rate, Stated Percentage

'

'

5.63%

'

5.38%

'

9.00%

'

3.00%

'

2.25%

'

'

'

'

5.38%

9.00%

'

2.25%

'

'

'

Gains (Losses) on Extinguishment of Debt

'

'

'

'

-4,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Long-term debt

921,927,000

663,571,000

0

79,449,000

54,479,000

249,868,000

191,376,000

0

348,735,000

[1]

334,254,000

[1]

327,337,000

[2]

0

'

'

327,337,000

'

'

'

'

'

'

'

Debt Instrument, Face Amount

'

'

'

'

'

'

'

'

'

'

'

'

'

450,000,000

'

'

'

'

'

'

'

'

Extinguishment of Debt, Amount

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

195,500,000

'

'

'

'

'

'

Percent of Stock With Ordinary Voting Rights That the Company Must Retain In Order to Make Any Capital Stock Transactions Under Debt Covenant Agreement

'

'

'

'

80.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Proceeds from Issuance of Long-term Debt

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

389,800,000

'

'

'

'

Debt Instrument, Convertible, Threshold Trading Days

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

20

20

5

Debt Instrument, Convertible, Threshold Consecutive Trading Days

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'30 days

'30 days

'5 days

Convertible Debt Trigger Based on Common Stock Price

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

130.00%

130.00%

'

Debt Instrument, Convertible, Redemption Price, Percentage

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

100.00%

'

'

Convertible Debt Trigger Based on Trading Price Per Share of Debt

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

98.00%

Debt Instrument, Convertible, Conversion Ratio

'

'

'

'

'

'

'

'

'

'

'

'

'

'

94.3396

'

'

'

'

'

'

'

Debt Conversion, Converted Instrument, Amount

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$1,000

'

'

'

'

'

'

'

Debt Instrument, Convertible, Conversion Price

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$10.60

'

'

'

'

'

'

'

[1]

The principal amount of these notes is $450 million.

[2]

The principal amount of these notes is $400 million.

Note_10_LongTerm_Debt_Schedule1

Note 10 - Long-Term Debt Schedule of Liability and Equity Components of Convertible Debt (Details) (USD $)	Sep. 30, 2013	Dec. 31, 2012	Sep. 30, 2013		Dec. 31, 2012	Sep. 30, 2013		Mar. 31, 2013
			Two Point Two Five Percent Convertible Notes Due 2019 [Member]		Two Point Two Five Percent Convertible Notes Due 2019 [Member]	Convertible Debt [Member]		Debt Offering 2013 [Member]
						Two Point Two Five Percent Convertible Notes Due 2019 [Member]		Convertible Debt [Member]
								Two Point Two Five Percent Convertible Notes Due 2019 [Member]
Schedule of Liability and Equity Components of Convertible Debt [Line Items]	'	'	'		'	'		'
Long-term Debt, Gross	'	'	'		'	$400,000,000		$400,000,000
Debt Instrument, Unamortized Discount (Premium), Net	'	'	'		'	-72,663,000	[1]	'
Long-term debt	921,927,000	663,571,000	327,337,000	[2]	0	327,337,000		'
Debt Instrument, Convertible, Carrying Amount of Equity Component	'	'	'		'	$77,026,000	[3],[4]	'
[1]	Included within long-term debt and is being amortized over the life of the convertible notes.
[2]	The principal amount of these notes is $400 million.
[3]	A full valuation allowance has been recorded against the deferred income tax impact.
[4]	Included within additional paid-in capital, net of related issuance costs.

Note_10_LongTerm_Debt_Interest

Note 10 - Long-Term Debt Interest Expense Recognized Related to Convertible Debt (Details) (Two Point Two Five Percent Convertible Notes Due 2019 [Member], Convertible Debt [Member], USD $)	3 Months Ended	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2013
Two Point Two Five Percent Convertible Notes Due 2019 [Member] | Convertible Debt [Member]	'	'
Schedule of Interest Expense Recognized Related to Convertible Debt [Line Items]	'	'
Interest Expense, Debt, Excluding Amortization	$2,250	$5,175
Amortization of Financing Costs	311	711
Amortization of Debt Discount	2,801	6,378
Debt Instrument, Convertible, Interest Expense	$5,362	$12,264
Debt Instrument, Interest Rate, Effective Percentage	6.25%	6.25%

Note_11_Accumulated_Other_Comp2

Note 11 - Accumulated Other Comprehensive Income (Details) (USD $)

3 Months Ended

9 Months Ended

In Thousands, unless otherwise specified

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Jun. 30, 2013

Dec. 31, 2012

Jun. 30, 2012

Dec. 31, 2011

Accumulated Other Comprehensive Income (Loss), before Tax

$44,665

$26,294

$44,665

$26,294

$37,450

$24,904

$22,682

$12,039

Accumulated Other Comprehensive Income (Loss), before Tax [Abstract] [Abstract]

'

'

'

'

'

'

'

'

Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss), before Reclassification and Tax

'

1

'

-11

'

'

'

'

Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Reclassification Adjustment from AOCI, Realized upon Sale or Liquidation, before Tax

'

0

'

0

'

'

'

'

Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, before Tax

'

1

'

-11

'

'

'

'

Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, before Tax

7,659

-2,489

21,422

21,811

'

'

'

'

Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, before Tax

444

[1]

-6,100

[1]

1,661

[1]

7,545

[1]

'

'

'

'

Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, before Tax

7,215

3,611

19,761

14,266

'

'

'

'

Other Comprehensive Income (Loss), before Tax, Portion Attributable to Parent

7,215

3,612

19,761

14,255

'

'

'

'

Accumulated Other Comprehensive Income (Loss), Tax [Abstract]

'

'

'

'

'

'

'

'

Accumulated Other Comprehensive Income, Tax

12,984

4,364

8,809

639

'

'

'

'

Other Comprehensive Income (Loss), Foreign Currency Translation Gain (Loss) Arising During Period, Tax

'

0

'

-4

'

'

'

'

Other Comprehensive Income (Loss), Foreign Currency Translation Reclassification Adjustment Realized upon Sale or Liquidation, Tax

'

0

'

0

'

'

'

'

Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Tax

'

0

'

-4

'

'

'

'

Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, Tax

2,681

-871

7,498

7,634

'

'

'

'

Other Comprehensive Income (Loss), Reclassification Adjustment for Sale of Securities Included in Net Income, Tax

140

[1]

-4,911

[1]

782

[1]

-135

[1]

'

'

'

'

Other Comprehensive Income (Loss), Available-for-sale Securities, Tax

2,541

4,040

6,716

7,769

'

'

'

'

Other Comprehensive Income (Loss), Tax

2,541

4,040

6,716

7,765

'

'

'

'

Accumulated Other Comprehensive Income, Tax

15,525

8,404

15,525

8,404

'

'

'

'

Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]

'

'

'

'

'

'

'

'

Accumulated other comprehensive income, net of tax

24,466

18,318

16,095

11,400

'

'

'

'

Unrealized foreign currency translation adjustment, net of tax

0

1

0

-7

'

'

'

'

Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Reclassification Adjustment Realized upon Sale or Liquidation, Net of Tax

0

0

0

0

'

'

'

'

Net foreign currency translation adjustment, net of tax

0

1

0

-7

'

'

'

'

Unrealized holding gains (losses) arising during the period, net of tax

4,978

-1,618

13,924

14,177

'

'

'

'

Less: Reclassification adjustment for net gains (losses) included in net (loss) income, net of tax

304

[1]

-1,189

[1]

879

[1]

7,680

[1]

'

'

'

'

Net unrealized gains (losses) on investments, net of tax

4,674

-429

13,045

6,497

'

'

'

'

Other comprehensive income (loss)

4,674

-428

13,045

6,490

'

'

'

'

Accumulated other comprehensive income, net of tax

$29,140

$17,890

$29,140

$17,890

'

'

'

'

[1]

Included in net (losses) gains on investments on our condensed consolidated statements of operations.

Note_12_Income_Taxes_Income_Ta

Note 12 - Income Taxes Income Tax Details (Details) (USD $)	Sep. 30, 2013	Dec. 31, 2012	Dec. 31, 2007	Sep. 30, 2013	31-May-10	Jun. 30, 2008
			Internal Revenue Service (IRS) [Member]	Internal Revenue Service (IRS) [Member]	Internal Revenue Service (IRS) [Member]	Internal Revenue Service (IRS) [Member]
Operating Loss Carryforwards [Line Items]	'	'	'	'	'	'
Operating Loss Carryforwards	$1,800,000,000	'	'	'	'	'
Deferred Tax Asset, Net, Before Allocation of Valuation Allowance	1,054,300,000	989,700,000	'	'	'	'
Valuation Allowance, Amount	1,036,400,000	989,700,000	'	'	'	'
Deferred tax assets, net	17,902,000	0	'	'	'	'
Proposed Increase To Tax Liability Resulting From I.R.S. Examination Of Tax Years 2000 Through 2007	'	'	'	128,000,000	'	'
Income Tax Examination, Proposed Penalties	'	'	'	42,000,000	'	'
Qualified Deposit With The U.S. Department Of Treasury Relating to Tax Years 2000 Through 2004	'	'	'	'	'	85,000,000
Qualified Deposit With The U.S. Department Of Treasury Relating To Tax Years 2005 Through 2007	'	'	'	'	4,000,000	'
Amount of Claimed Income Tax Refund for Tax Years 2006 and 2007	'	'	$105,000,000	'	'	'
Number of Days Company Has to Respond to IRS Office of Appeals Deficiency Notice	'	'	'	'90 days	'	'

Note_13_Statutory_Information_2

Note 13 - Statutory Information Statutory Information (Details) (USD $)	Sep. 30, 2013	Sep. 30, 2013		Dec. 31, 2012		Jul. 31, 2013	Sep. 30, 2013	Sep. 30, 2013	Sep. 30, 2013	Sep. 30, 2013	Sep. 30, 2013
		Radian Guaranty [Member]		Radian Guaranty [Member]		Radian Asset Assurance [Member]	Radian Asset Assurance [Member]	Parent Company	State Insurance Regulations [Member]	Primary Mortgage Product [Member]	Corporate Expenses and Interest Payments Due Within Twelve Months [Member]
									Mortgage Insurance Segment	Mortgage Insurance Segment	Parent Company
									state	Radian Guaranty [Member]
Statutory Accounting Practices [Line Items]	'	'		'		'	'	'	'	'	'
Number Of States That Have A Statutory Or Regulatory Risk Based Capital Requirement	'	'		'		'	'	'	16	'	'
Risk To Capital Ratio, Regulatory Maximum	'	'		'		'	'	'	0.25	'	'
Percentage of New Insurance Written Attributable To States With Statutory Or Regulatory Risk Based Capital Requirements	'	'		'		'	'	'	'	55.40%	'
Unrestricted Cash and Liquid Investments	'	'		'		'	'	$822,100,000	'	'	'
Statutory net income (loss)	'	10,700,000		-175,900,000		'	'	'	'	'	'
Statutory Accounting Practices, Statutory Capital and Surplus, Balance	'	1,239,100,000		926,000,000		'	1,200,000,000	'	'	'	'
Contingency Reserve	'	17,200,000		0		'	'	'	'	'	'
Statutory Accounting Practices, Statutory Policyholders' Surplus Plus Contingency Reserves	'	1,256,300,000		926,000,000		'	'	'	'	'	'
Net Risk In Force	'	24,899,400,000	[1]	19,226,700,000	[1]	'	'	'	'	'	'
Risk To Capital Ratio	'	0.198		0.208		'	'	'	'	'	'
Risk to Capital, Entity's Intended Maximum	'	0.2		'		'	'	'	'	'	'
Capital Contributions	'	230,000,000		'		'	'	'	'	'	'
Claims Paying Resources	'	'		'		'	1,600,000,000	'	'	'	'
Payment of Dividend by Subsidiary to Parent	'	'		'		36,000,000	'	'	'	'	'
Restricted Cash and Cash Equivalents	1,300,000,000	'		'		'	'	'	'	'	'
Proceeds from Contributions from Affiliates	'	'		'		'	'	119,500,000	'	'	75,500,000
Unrestricted Cash and Liquid Investments Net of Subsidiaries Prepaid Corporate Expenses	'	'		'		'	'	$702,600,000	'	'	'
[1]	RIF, net excludes risk ceded through reinsurance contracts and RIF on defaulted loans.

Note_14_Selected_Financial_Inf2

Note 14 - Selected Financial Information of Registrant - Radian Group Selected Financial Information of Registrant (Details) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Condensed Financial Statements, Captions [Line Items]	'	'
Total assets	$5,758,573	$5,903,200
Long-term debt	921,927	663,571
Total liabilities	4,864,053	5,166,875
Total stockholders’ equity	894,520	736,325
Total liabilities and stockholders’ equity	5,758,573	5,903,200
Parent Company	'	'
Condensed Financial Statements, Captions [Line Items]	'	'
Investments in subsidiaries, at equity in net assets	1,356,140	1,234,229
Total assets	2,051,620	1,550,619
Long-term debt	921,927	663,571
Total liabilities	1,157,100	814,294
Total stockholders’ equity	894,520	736,325
Total liabilities and stockholders’ equity	$2,051,620	$1,550,619

Note_15_Commitments_and_Contin1

Note 15 - Commitments and Contingencies Legal Proceedings (Details) (USD $)

Sep. 13, 2013

Aug. 13, 2010

Aug. 01, 2011

Apr. 09, 2013

Oct. 09, 2012

Sep. 28, 2012

18-May-12

Jan. 13, 2012

Dec. 30, 2011

Dec. 31, 2012

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Loss Contingency 8_13_2010 Claim [Member]

Loss Contingency 8_13_2010 Claim [Member]

Loss Contingency 8_1_2011 Claim [Member]

Real Estate Settlement Practices Act of 1974 [Member]

Real Estate Settlement Practices Act of 1974 [Member]

Real Estate Settlement Practices Act of 1974 [Member]

Real Estate Settlement Practices Act of 1974 [Member]

Real Estate Settlement Practices Act of 1974 [Member]

Real Estate Settlement Practices Act of 1974 [Member]

Captive Reinsurance Arrangements [Member]

Internal Revenue Service (IRS) [Member]

Total Primary Insurance Mortgage Insurance Products [Member]

Pool Insurance Mortgage Insurance Product [Member]

loan

policy

loan

borrower

borrower

plaintiff

plaintiff

plaintiff

Maximum [Member]

Maximum [Member]

Loss Contingency Related to Primary Insurance [Member]

Loss Contingency Related to Primary Insurance [Member]

Settled Law Suits [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

'

Litigation Settlement, Gross

'

'

'

$3,750,000

'

'

'

'

'

'

'

'

'

Loss Contingency, Settlement Agreement, Number of Years Restricted From Activities

'

'

'

'10 years

'

'

'

'

'

'

'

'

'

Net Cash Received (Paid) For Commutations, Terminations And Recaptures

'

'

'

'

'

'

'

'

'

750,000,000

'

'

'

Number of Days Company Has to Respond to IRS Office of Appeals Deficiency Notice

'

'

'

'

'

'

'

'

'

'

'90 days

'

'

Pending Law Suits [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

'

Number Of RMBS Bulk Primary Mortgage Insurance Policies Involved In Pending or Threatened Litigation

'

27

'

'

'

'

'

'

'

'

'

'

'

Number Of Loans Included In The RMBS Bulk Primary Mortgage Insurance Policies Involved In Litigation

680

'

'

'

'

'

'

'

'

'

'

'

'

Litigation Settlement, Amount of Risk in Force to Be Reinstated

19,000,000

'

'

'

'

'

'

'

'

'

'

'

'

Risk In Force

'

'

13,000,000

'

'

'

'

'

'

'

'

'

'

Number Of Home Mortgage Loans Involved In Pending Litigation

'

'

220

'

'

'

'

'

'

'

'

'

'

Loss Contingency, Number of Additional Borrowers with Loss Contingency

'

'

'

'

1

3

'

'

'

'

'

'

'

Loss Contingency, Number of Plaintiffs Whose Loans Were Insured

'

'

'

'

'

'

1

1

1

'

'

'

'

Loss Reserve Information [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

'

Loss Contingency, Legal Actions Commencement, Period

'

'

'

'

'

'

'

'

'

'

'

'2 years

'3 years

Proposed Increase To Tax Liability Resulting From I.R.S. Examination Of Tax Years 2000 Through 2007

'

'

'

'

'

'

'

'

'

'

128,000,000

'

'

Income Tax Examination, Proposed Penalties

'

'

'

'

'

'

'

'

'

'

$42,000,000

'

'

Note_15_Commitments_and_Contin2

Note 15 - Commitments and Contingencies Guarantor Obligations (Details) (USD $)	Sep. 30, 2013	Mar. 01, 2011	Dec. 31, 2010
In Millions, unless otherwise specified	Guaranteed Structured Transactions [Member]	Foreign Holding Company [Member]	Foreign Holding Company [Member]
	transaction
Guarantor Obligations [Line Items]	'	'	'
Number of Guaranteed Structured Transactions For Radian Guaranty	2	'	'
Guarantor Obligations, Maximum Exposure, Undiscounted	$142.70	'	$103.40
Percentage Investment Interest In Foreign Holding Company	'	45.00%	'

Note_15_Commitments_and_Contin3

Note 15 - Commitments and Contingencies Purchase Committment, Excluding Long Term Committment (Details) (Purchase Commitment [Member], USD $)	Sep. 30, 2013
In Millions, unless otherwise specified
Purchase Commitment [Member]	'
Purchase Commitment, Excluding Long-term Commitment [Line Items]	'
Purchase Commitment, Remaining Minimum Amount Committed	$7.40

Note_15_Commitments_and_Contin4

Note 15 - Commitments and Contingencies Contract Underwriting (Details) (USD $)	9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2013
Contract Underwriting [Line Items]	'
Losses Paid For Contract Underwriting Remedies	$1.60
Provision For Contract Underwriting Expense	1.7
Reserve For Contract Underwriting Obligations	$3.80

Note_15_Commitments_and_Contin5

Note 15 - Commitments and Contingencies Employee Related Obligations (Details) (Scenario, Forecast [Member], Incentive, Retention and Severance Agreements [Member], USD $)	Dec. 31, 2015
In Millions, unless otherwise specified
Scenario, Forecast [Member] | Incentive, Retention and Severance Agreements [Member]	'
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]	'
Total Incentive Retention And Severance Agreement Expenses Expected To Be Incurred	$13.30
Unrecorded Incentive Retention And Severance Agreement Expenses	$3.90

Note_16_Capital_Stock_Details

Note 16 - Capital Stock (Details) (USD $)	9 Months Ended		1 Months Ended	7 Months Ended
In Thousands, except Share data, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Mar. 31, 2013	Sep. 30, 2013
			Stock Offering 2013 [Member]	Stock Offering 2013 [Member]
			Common Stock	Common Stock
Class of Stock [Line Items]	'	'	'	'
Stock Issued During Period, Shares, New Issues	'	'	39,100,000	'
Sale of Stock, Price Per Share	'	'	$8	'
Proceeds from Issuance of Common Stock	$299,410	$0	'	$299,400