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Note 20 - Condensed Financial Information of Cathay General Bancorp (Details) - Statements of Cash Flows (USD $) In Thousands, unless otherwise specified | 12 Months Ended
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Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
Cash flows from Operating Activities |  |  |
Net income | $ 123,143 | $ 117,438 | $ 100,150
Write-downs on venture capital and other investments | 409 | 309 | 379
Write-downs on impaired securities |  | 181 | 200
Excess tax short-fall from stock options | 2,509 | 620 | 290
Net change in other assets | 23,525 | 43,304 | 2,622
Net change in other liabilities | (4,973) | (2,256) | 3,746
Net cash provided by/(used in) operating activities | 115,073 | 164,576 | 174,050
Cash flows from Investment Activities |  |  |
Proceeds from sale of available-for-sale securities | (350,130) | (517,513) | (571,093)
Net cash provided by/(used in) investment activities | (311,806) | (46,536) | 127,050
Cash flows from Financing Activities |  |  |
Cash dividends | (12,606) | (16,049) | (16,046)
Proceeds from exercise of stock options | 14,755 | 764 | 1,306
Excess tax short-fall from share-based payment arrangements | (2,509) | (620) | (290)
Net cash used in financing activities | 205,571 | (91,019) | (270,559)
Increase/(decrease) in cash and cash equivalents | 8,838 | 27,021 | 30,541
Cash and cash equivalents, | 153,747 | 144,909 | 117,888
Series B Preferred Stock [Member] | Parent Company [Member] |  |  |
Cash flows from Financing Activities |  |  |
Redemption of Series B preferred stock | (258,000) |  |
Series B Preferred Stock [Member] |  |  |
Cash flows from Financing Activities |  |  |
Redemption of Series B preferred stock | (258,000) |  |
Parent Company [Member] |  |  |
Cash flows from Operating Activities |  |  |
Net income | 123,143 | 117,438 | 100,150
Dividends in excess of earnings of subsidiaries | 12,078 | 36,463 |
Equity in undistributed earnings of subsidiaries | 12,078 | 36,463 | (102,492)
Gains on sale of securities |  | (3,380) |
Increase in accrued expense |  | 12 | 24
Write-downs on venture capital and other investments | 357 | 262 | 321
Write-downs on impaired securities |  | 181 | 200
Loss/(gains) in fair value of warrants | 56 | 114 | (215)
Excess tax short-fall from stock options | 2,509 | 620 | 290
Net change in other assets | (1,684) | 1,820 | (121)
Net change in other liabilities | 27 | 59 | (221)
Net cash provided by/(used in) operating activities | 136,486 | 153,589 | (2,064)
Cash flows from Investment Activities |  |  |
Decrease/(increase) in short-term investment | 123,300 | (142,300) | 17,500
Proceeds from sale of available-for-sale securities |  | 4,849 |
Venture capital and other investments | (835) | (694) | (671)
Net cash provided by/(used in) investment activities | 122,465 | (138,145) | 16,829
Cash flows from Financing Activities |  |  |
Cash dividends | (12,606) | (16,049) | (16,046)
Proceeds from shares issued under the Dividend Reinvestment Plan | 605 | 291 | 287
Proceeds from exercise of stock options | 14,755 | 764 | 1,306
Excess tax short-fall from share-based payment arrangements | (2,509) | (620) | (290)
Net cash used in financing activities | (257,755) | (15,614) | (14,743)
Increase/(decrease) in cash and cash equivalents | 1,196 | (170) | 22
Cash and cash equivalents, | 1,835 | 639 |
Parent Company [Member] | Beginning of Period [Member] |  |  |
Cash flows from Financing Activities |  |  |
Cash and cash equivalents, | 639 | 809 | 787
Parent Company [Member] | End of Period [Member] |  |  |
Cash flows from Financing Activities |  |  |
Cash and cash equivalents, | $ 1,835 | $ 639 | $ 809

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- Definition Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Cash -URI http://asc.fasb.org/extlink&oid=6506951 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Cash Equivalents -URI http://asc.fasb.org/extlink&oid=6507016 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 1 -Article 5 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.1) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 45 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=28358313&loc=d3e6676-107765 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3044-108585 + Details
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- Definition This item represents the net total realized and unrealized gain (loss) included in earnings for the period as a result of selling or holding marketable securities categorized as trading, available-for-sale, or held-to-maturity, including the unrealized holding gain (loss) of held-to-maturity securities transferred to the trading security category and the cumulative unrealized gain (loss) which was included in other comprehensive income (a separate component of shareholders' equity) for available-for-sale securities transferred to trading securities during the period. Additionally, this item would include any gains (losses) realized during the period from the sale of investments accounted for under the cost method of accounting and losses recognized for other than temporary impairments (OTTI) of the subject investments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.7(c),9(a)) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 Reference 3: 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 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 7 -Article 5 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 9 -Subparagraph (c)-(e) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27357-111563 + Details
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