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Note 11 - Borrowed Funds (Details Textual) - USD ($) $ in Thousands |  | 3 Months Ended |
--- | --- | --- | ---
Nov. 14, 2017 | Mar. 31, 2020 | Dec. 31, 2019
Securities Sold under Agreements to Repurchase, Total |  | $ 0 | $ 450,000
Advances from Federal Home Loan Banks, Total |  | 495,000 | 670,000
Short-term Debt, Total |  | 12,898 | $ 25,683
Junior Subordinated Notes, Noncurrent |  | $ 119,100 |
Junior Subordinated Debt [Member] |  |  |
Debt Instrument, Interest Rate, Effective Percentage |  | 3.15% | 4.09%
Debt Instrument, Term (Year) |  | 30 years |
SinoPac Bancorp [Member] |  |  |
Business Combination, Deferred Payments |  | $ 7,700 |
Debt Instrument, Face Amount |  | $ 7,000 |
Debt Instrument, Interest Rate, Effective Percentage |  | 2.95% |
Mature in April 2021 [Member |  |  |
Advances from Federal Home Loan Banks, Total |  | $ 275,000 |
Mature in May 2021 [Member] |  |  |
Advances from Federal Home Loan Banks, Total |  | 75,000 |
Mature in June 2021 [Member] |  |  |
Advances from Federal Home Loan Banks, Total |  |  | $ 50,000
Mature in July 2021 [Member] |  |  |
Advances from Federal Home Loan Banks, Total |  |  | 75,000
Mature in May 2023 [Member] |  |  |
Advances from Federal Home Loan Banks, Total |  |  | $ 20,000
Short-term debt Through Hong Kong Office [Member] |  |  |
Short-term Debt, Total |  | $ 12,900 |
Debt, Weighted Average Interest Rate |  | 2.40% |
Business Combination, Deferred Payments [Member] | London Interbank Offered Rate (LIBOR) [Member] |  |  |
Debt Instrument, Basis Spread on Variable Rate | 1.50% |  |
Over-night Borrowings [Member] |  |  |
Federal Home Loan Bank, Advances, Branch of FHLB Bank, Interest Rate |  |  | 1.66%
Non Overnight Borrowings [Member] |  |  |
Federal Home Loan Bank, Advances, Branch of FHLB Bank, Interest Rate |  | 1.13% | 2.26%
Advances from Federal Home Loan Banks, Total |  | $ 495,000 | $ 220,000

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