Note 8 - Deposits - Summary of Deposits (Details) - USD ($) $ in Thousands |
Dec. 31, 2017 |
Dec. 31, 2016 |
|---|---|---|
| Non-interest-bearing demand | $ 1,440,326 | $ 1,281,605 |
| Interest-bearing checking | 4,029,147 | 3,562,165 |
| Savings | 50,959 | 48,718 |
| Time deposits, $250,000 and under | 228,540 | 234,157 |
| Time deposits, over $250,000 | 342,702 | 293,666 |
| Total | $ 6,091,674 | $ 5,420,311 |
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- Definition Amount of time deposit liabilities, including certificates of deposit, in denominations that are below the Federal Deposit Insurance Corporation (FDIC) insurance limit. No definition available.
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| X | ||||||||||
- Definition The aggregate of all deposit liabilities held by the entity, including foreign and domestic, interest and noninterest bearing; may include demand deposits, saving deposits, Negotiable Order of Withdrawal (NOW) and time deposits among others. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Definition Amount of interest bearing deposits with no stated maturity, which may include passbook and statement savings accounts and money-market deposit accounts (MMDAs). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Definition Amount of interest-bearing domestic checking deposit liabilities. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition The aggregate amount of all domestic and foreign noninterest-bearing deposits liabilities held by the entity. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Definition Amount of time deposit liabilities, including certificates of deposit, in denominations that meet or exceed the Federal Deposit Insurance Corporation (FDIC) insurance limit. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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