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Note 5 - Investments Investments Trading Securities (Details) - USD ($) $ in Thousands | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2015 | Dec. 31, 2014
Schedule of Trading Securities and Other Trading Assets [Line Items] |  |
Marketable Securities, Unrealized Gain (Loss) | $ (12,700) | $ 65,700
Trading Securities | 1,414,757 | 1,633,584
US government and agency securities |  |
Schedule of Trading Securities and Other Trading Assets [Line Items] |  |
Trading Securities | 131,956 | 134,530
State and municipal obligations |  |
Schedule of Trading Securities and Other Trading Assets [Line Items] |  |
Trading Securities | 313,884 | 343,926
Corporate bonds and notes |  |
Schedule of Trading Securities and Other Trading Assets [Line Items] |  |
Trading Securities | 632,681 | 708,361
RMBS |  |
Schedule of Trading Securities and Other Trading Assets [Line Items] |  |
Trading Securities | 76,536 | 89,810
CMBS |  |
Schedule of Trading Securities and Other Trading Assets [Line Items] |  |
Trading Securities | 156,697 | 188,615
Other ABS |  |
Schedule of Trading Securities and Other Trading Assets [Line Items] |  |
Trading Securities | 25,559 | 77,755
Foreign government securities |  |
Schedule of Trading Securities and Other Trading Assets [Line Items] |  |
Trading Securities | 13,449 | 18,331
Equity securities |  |
Schedule of Trading Securities and Other Trading Assets [Line Items] |  |
Trading Securities | $ 63,995 | $ 72,256

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- Definition The aggregate net change in the difference between the fair value and the carrying value, or in the comparative fair values, of marketable securities categorized as trading held at each balance sheet date, that was included in earnings for the period, which may have arisen from (a) securities classified as trading, (b) the unrealized holding gain (loss) on held-to-maturity securities transferred to the trading security category, and (c) the cumulative unrealized gain (loss) which was included in other comprehensive income (a separate component of shareholders' equity) on available-for-sale securities transferred to trading securities during the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 9 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27357-111563 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 10 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27405-111563 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Amount of investments in debt and equity securities and other forms of securities that provide ownership interests classified as trading. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=49167202&loc=d3e26626-111562 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.4) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=49167202&loc=d3e26610-111562 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Trading Securities -URI http://asc.fasb.org/extlink&oid=6526789 + Details
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