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Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

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Contractual interest rate for funds borrowed, under the debt agreement.

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Amount of the required periodic payments applied to principal.

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Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Discloses the single interest rate [if] applicable to the advances from the Federal Home Loan Bank, by branch, as of the Balance Sheet date.

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Note 11 - Borrowed Funds (Details Textual) - USD ($) $ in Thousands		3 Months Ended
	Oct. 12, 2017	Mar. 31, 2019	Dec. 31, 2018
Advances from Federal Home Loan Banks, Total		$ 420,000	$ 530,000
Long-term Debt, Total		174,448	189,448
Junior Subordinated Notes, Noncurrent		$ 119,100	$ 119,100
Junior Subordinated Debt [Member]
Debt Instrument, Interest Rate, Stated Percentage		4.78%	4.96%
Debt Instrument, Term		30 years
SinoPac Bancorp [Member]
Business Combination, Deferred Payments		$ 17,600
Debt Instrument, Interest Rate, Effective Percentage		4.00%
Debt Instrument, Basis Spread on Variable Rate		1.50%
Mature in April 2019 [Member]
Advances from Federal Home Loan Banks, Total		$ 350,000
Mature in December 2019 [Member]
Advances from Federal Home Loan Banks, Total		50,000
Mature in May 2023 [Member]
Advances from Federal Home Loan Banks, Total		20,000
Mature in July 2019 [Member] \| SinoPac Bancorp [Member]
Business Combination, Deferred Payments		$ 10,600
Term Loan [Member] \| US Bank [Member]
Debt Instrument, Interest Rate, Effective Percentage		4.25%	4.125%
Debt Instrument, Face Amount	$ 75,000
Long-term Debt, Total		$ 55,300
Debt Instrument, Periodic Payment, Principal	$ 4,700
Term Loan [Member] \| US Bank [Member] \| London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument, Basis Spread on Variable Rate	1.75%
Over-night Borrowings [Member]
Advances from Federal Home Loan Banks, Total		0	$ 200,000
Federal Home Loan Bank, Advances, Branch of FHLB Bank, Interest Rate			2.56%
Non Overnight Borrowings [Member]
Advances from Federal Home Loan Banks, Total		$ 420,000	$ 330,000
Federal Home Loan Bank, Advances, Branch of FHLB Bank, Interest Rate		2.47%	2.42%