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Note 5 - Investments Schedule of Contractual Maturities (Details) - USD ($) $ in Thousands | Sep. 30, 2017 | Dec. 31, 2016
--- | --- | ---
Available-for-sale Securities, Amortized Cost |  |  |
Available-for-sale Debt Securities, Amortized Cost Basis |  | $ 3,218,614 | $ 2,856,468
Available-for-sale Securities, Fair Value |  |  |
Available-for-sale Securities, Debt Securities |  | 3,256,581 | 2,838,512
Debt Securities |  |  |
Available-for-sale Securities, Amortized Cost |  |  |
Available-for-sale Debt Securities, Amortized Cost Basis | [1] | 3,252,397 |
Available-for-sale Securities, Fair Value |  |  |
Available-for-sale Securities, Debt Securities | [1] | 3,290,207 |
Non Asset Backed Security Investments, Contractual Maturities |  |  |
Available-for-sale Securities, Amortized Cost |  |  |
Due in one year or less | [2] | 41,767 |
Due after one year through five years | [2] | 687,822 |
Due after five years through ten years | [2] | 965,360 |
Due after ten years | [2] | 330,056 |
Available-for-sale Securities, Fair Value |  |  |
Due in one year or less | [2] | 41,780 |
Due after one year through five years | [2] | 694,932 |
Due after five years through ten years | [2] | 974,600 |
Due after ten years | [2] | 347,763 |
RMBS |  |  |
Available-for-sale Securities, Amortized Cost |  |  |
Available-for-sale Securities, Debt Maturities, without Single Maturity Date, Amortized Cost Basis | [3] | 176,789 |
Available-for-sale Securities, Fair Value |  |  |
Available-for-sale Securities, Debt Maturities, without Single Maturity Date, Fair Value | [3] | 175,408 |
CMBS |  |  |
Available-for-sale Securities, Amortized Cost |  |  |
Available-for-sale Securities, Debt Maturities, without Single Maturity Date, Amortized Cost Basis | [3] | 433,916 |
Available-for-sale Securities, Fair Value |  |  |
Available-for-sale Securities, Debt Maturities, without Single Maturity Date, Fair Value | [3] | 436,892 |
Other ABS |  |  |
Available-for-sale Securities, Amortized Cost |  |  |
Available-for-sale Securities, Debt Maturities, without Single Maturity Date, Amortized Cost Basis | [3] | 616,687 |
Available-for-sale Securities, Fair Value |  |  |
Available-for-sale Securities, Debt Maturities, without Single Maturity Date, Fair Value | [3] | 618,832 |
2013 Freddie Mac Agreement [Member] | Radian Guaranty Inc [Member] |  |  |
Available-for-sale Securities, Fair Value |  |  |
Marketable Securities, Restricted |  | $ 5,500 | $ 63,900
[1] | Includes securities loaned under securities lending agreements.
[2] | Actual maturities may differ as a result of calls before scheduled maturity.
[3] | RMBS, CMBS and Other ABS are shown separately, as they are not due at a single maturity date.

X
- Definition This item represents the cost of debt securities, which are categorized neither as held-to-maturity nor trading, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (aa) -URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27161-111563 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.2) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Amount after adjustments of available-for-sale debt securities at cost, maturing in the sixth fiscal year through the tenth fiscal year following the latest fiscal year. Adjustments include, but are not limited to, accretion, amortization, collection of cash, previous other-than-temporary impairments (OTTI) recognized in earnings less cumulative-effect adjustments, and fair value hedge accounting adjustments. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.2) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27198-111563 + Details
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- Definition Amount after adjustments of available-for-sale debt securities at cost, maturing in the second fiscal year through the fifth fiscal year following the latest fiscal year. Adjustments include, but are not limited to, accretion, amortization, collection of cash, previous other-than-temporary impairments (OTTI) recognized in earnings less cumulative-effect adjustments, and fair value hedge accounting adjustments. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.2) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27198-111563 + Details
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