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Note 13 - Commitments and Contingencies (Tables) | 12 Months Ended
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Dec. 31, 2018
Notes Tables |
Schedule of Fair Value, Off-balance Sheet Risks [Table Text Block] |
|  | As of December 31, |
|  | 2018 |  |  | 2017 |
|  | (In thousands) |
Commitments to extend credit |  | $ | 2,691,579 |  |  | $ | 2,366,368 |
Standby letters of credit |  |  | 245,087 |  |  |  | 140,814 |
Commercial letters of credit |  |  | 35,759 |  |  |  | 27,353 |
Bill of lading guarantees |  |  | 730 |  |  |  | 24 |
Total |  | $ | 2,973,155 |  |  | $ | 2,534,559 |
Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block] |
Year Ending December 31, |  | Commitments |
|  | (In thousands) |
2019 |  | $ | 8,835 |
2020 |  |  | 7,220 |
2021 |  |  | 6,406 |
2022 |  |  | 5,406 |
2023 |  |  | 4,208 |
Thereafter |  |  | 4,899 |
Total minimum lease payments |  | $ | 36,974 |
Schedule of Future Rental Payments to Be Received for Operating Leases [Table Text Block] |
Year Ending December 31, |  | Commitments |
|  | (In thousands) |
2019 |  | $ | 214 |
2020 |  |  | 120 |
2021 |  |  | 79 |
2022 |  |  | 25 |
Total minimum lease payments to be received |  | $ | 438 |

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- Definition Tabular disclosure of the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined) which are not recognized in the financial statements (off-balance sheet) because they fail to meet some other criterion for recognition. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=109250915&loc=d3e13467-108611 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=109250915&loc=d3e13433-108611 + Details
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- Definition Tabular disclosure of future minimum payments required in the aggregate and for each of the five succeeding fiscal years for operating leases having initial or remaining noncancelable lease terms in excess of one year and the total minimum rentals to be received in the future under noncancelable subleases as of the balance sheet date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=77902758&loc=d3e41502-112717 + Details
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