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Note 21 - Fair Value Measurements - Estimated Fair Values and Related Carrying Amounts of Financial Instruments (Details) - USD ($) $ in Thousands | Sep. 30, 2017 | Dec. 31, 2016
--- | --- | ---
Held-to-maturity securities | $ 412,140 | $ 465,960
Reported Value Measurement [Member] |  |
Cash and cash equivalents | 432,290 | 285,659
Interest bearing balances due from banks - time | 4,059 | 4,563
Held-to-maturity securities | 406,033 | 462,096
Mortgage loans held for sale | 12,614 | 27,788
Interest receivable | 30,749 | 27,788
Federal funds purchased and securities sold under agreements to repurchase | 121,687 | 115,029
Other borrowings | 522,541 | 273,159
Subordinated debentures | 67,418 | 60,397
Interest payable | 2,043 | 1,668
Reported Value Measurement [Member] | Non-Interest Bearing Transaction Accounts [Member] |  |
Deposits | 1,669,860 | 1,491,676
Reported Value Measurement [Member] | Interest Bearing Transaction Accounts and Savings Deposits [Member] |  |
Deposits | 4,344,779 | 3,956,483
Reported Value Measurement [Member] | Time Deposits [Member] |  |
Deposits | 1,310,951 | 1,287,060
Reported Value Measurement [Member] | Legacy Loans [Member] |  |
Legacy loans (net of allowance) | 5,168,595 | 4,290,921
Reported Value Measurement [Member] | Acquired Loans [Member] |  |
Legacy loans (net of allowance) | 1,092,039 | 1,305,683
Estimate of Fair Value Measurement [Member] |  |
Cash and cash equivalents | 432,290 | 285,659
Interest bearing balances due from banks - time | 4,059 | 4,563
Held-to-maturity securities | 412,140 | 465,960
Mortgage loans held for sale | 12,614 | 27,788
Interest receivable | 30,749 | 27,788
Federal funds purchased and securities sold under agreements to repurchase | 121,687 | 115,029
Other borrowings | 526,266 | 292,367
Subordinated debentures | 62,142 | 55,318
Interest payable | 2,043 | 1,668
Estimate of Fair Value Measurement [Member] | Non-Interest Bearing Transaction Accounts [Member] |  |
Deposits | 1,669,860 | 1,491,676
Estimate of Fair Value Measurement [Member] | Interest Bearing Transaction Accounts and Savings Deposits [Member] |  |
Deposits | 4,344,779 | 3,956,483
Estimate of Fair Value Measurement [Member] | Time Deposits [Member] |  |
Deposits | 1,301,451 | 1,278,339
Estimate of Fair Value Measurement [Member] | Legacy Loans [Member] |  |
Legacy loans (net of allowance) | 5,140,768 | 4,305,165
Estimate of Fair Value Measurement [Member] | Acquired Loans [Member] |  |
Legacy loans (net of allowance) | 1,086,160 | 1,310,017
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 1 [Member] |  |
Cash and cash equivalents | 432,290 | 285,659
Interest bearing balances due from banks - time |  |
Held-to-maturity securities |  |
Mortgage loans held for sale |  |
Interest receivable |  |
Federal funds purchased and securities sold under agreements to repurchase |  |
Other borrowings |  |
Subordinated debentures |  |
Interest payable |  |
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 1 [Member] | Non-Interest Bearing Transaction Accounts [Member] |  |
Deposits |  |
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 1 [Member] | Interest Bearing Transaction Accounts and Savings Deposits [Member] |  |
Deposits |  |
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 1 [Member] | Time Deposits [Member] |  |
Deposits |  |
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 1 [Member] | Legacy Loans [Member] |  |
Legacy loans (net of allowance) |  |
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 1 [Member] | Acquired Loans [Member] |  |
Legacy loans (net of allowance) |  |
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member] |  |
Cash and cash equivalents |  |
Interest bearing balances due from banks - time | 4,059 | 4,563
Held-to-maturity securities | 412,140 | 465,960
Mortgage loans held for sale |  |
Interest receivable | 30,749 | 27,788
Federal funds purchased and securities sold under agreements to repurchase | 121,687 | 115,029
Other borrowings | 526,266 | 292,367
Subordinated debentures | 62,142 | 55,318
Interest payable | 2,043 | 1,668
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member] | Non-Interest Bearing Transaction Accounts [Member] |  |
Deposits | 1,669,860 | 1,491,676
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member] | Interest Bearing Transaction Accounts and Savings Deposits [Member] |  |
Deposits | 4,344,779 | 3,956,483
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member] | Time Deposits [Member] |  |
Deposits |  |
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member] | Legacy Loans [Member] |  |
Legacy loans (net of allowance) |  |
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member] | Acquired Loans [Member] |  |
Legacy loans (net of allowance) |  |
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 3 [Member] |  |
Cash and cash equivalents |  |
Interest bearing balances due from banks - time |  |
Held-to-maturity securities |  |
Mortgage loans held for sale | 12,614 | 27,788
Interest receivable |  |
Federal funds purchased and securities sold under agreements to repurchase |  |
Other borrowings |  |
Subordinated debentures |  |
Interest payable |  |
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 3 [Member] | Non-Interest Bearing Transaction Accounts [Member] |  |
Deposits |  |
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 3 [Member] | Interest Bearing Transaction Accounts and Savings Deposits [Member] |  |
Deposits |  |
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 3 [Member] | Time Deposits [Member] |  |
Deposits | 1,301,451 | 1,278,339
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 3 [Member] | Legacy Loans [Member] |  |
Legacy loans (net of allowance) | 5,140,768 | 4,305,165
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 3 [Member] | Acquired Loans [Member] |  |
Legacy loans (net of allowance) | $ 1,086,160 | $ 1,310,017

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- Definition Fair value portion 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. + References No definition available. + Details
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- Definition Fair value portion of deposit liabilities held by the entity, including, but not limited to, foreign and domestic, interest and noninterest bearing, demand deposits, saving deposits, negotiable orders of withdrawal (NOW) and time deposits. + References No definition available. + Details
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- Definition Fair value portion of short term borrowing where a bank borrows, at the federal funds rate, from another bank and securities that an entity sells and agrees to repurchase at a specified date for a specified price. + References No definition available. + Details
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- Definition Fair value portion of loan receivable, including, but not limited to, mortgage loans held for investment, finance receivables held for investment, policy loans on insurance contracts. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -URI http://asc.fasb.org/subtopic&trid=2196772 + Details
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