Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amount of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

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Note 15 - Fair Value Measurements and Fair Values of Financial Instruments - Financial Assets Measured on a Recurring Basis (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Investment securities available for sale, at fair value	$ 528,508	$ 539,042
Equity securities	9,039	0
SBA Servicing Assets	4,626	4,447	$ 4,785	$ 5,243
US Government Agencies Debt Securities [Member]
Investment securities available for sale, at fair value	31,886	38,305
Collateralized Mortgage Obligations [Member]
Investment securities available for sale, at fair value	221,546	331,438
Agency Mortgage-backed Securities [Member]
Investment securities available for sale, at fair value	150,528	98,937
US States and Political Subdivisions Debt Securities [Member]
Investment securities available for sale, at fair value	8,225	4,082
Corporate Debt Securities [Member]
Investment securities available for sale, at fair value	116,323	66,280
Fair Value, Recurring [Member]
Investment securities available for sale, at fair value	528,508	539,042
Equity securities	9,039
Mortgages Held-for-sale, Fair Value Disclosure	50,387	10,345
SBA Servicing Assets	4,626	4,447
Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 1 [Member]
Investment securities available for sale, at fair value		0
Equity securities	9,039
Mortgages Held-for-sale, Fair Value Disclosure	0	0
SBA Servicing Assets	0	0
Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 2 [Member]
Investment securities available for sale, at fair value	525,877	536,222
Equity securities	0
Mortgages Held-for-sale, Fair Value Disclosure	50,387	10,345
SBA Servicing Assets	0	0
Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 3 [Member]
Investment securities available for sale, at fair value	2,631	2,820
Equity securities	0
Mortgages Held-for-sale, Fair Value Disclosure	0	0
SBA Servicing Assets	4,626	4,447
Fair Value, Recurring [Member] \| US Government Agencies Debt Securities [Member]
Investment securities available for sale, at fair value	31,886	38,305
Fair Value, Recurring [Member] \| US Government Agencies Debt Securities [Member] \| Fair Value, Inputs, Level 1 [Member]
Investment securities available for sale, at fair value	0	0
Fair Value, Recurring [Member] \| US Government Agencies Debt Securities [Member] \| Fair Value, Inputs, Level 2 [Member]
Investment securities available for sale, at fair value	31,886	38,305
Fair Value, Recurring [Member] \| US Government Agencies Debt Securities [Member] \| Fair Value, Inputs, Level 3 [Member]
Investment securities available for sale, at fair value	0	0
Fair Value, Recurring [Member] \| Collateralized Mortgage Obligations [Member]
Investment securities available for sale, at fair value	221,546	331,438
Fair Value, Recurring [Member] \| Collateralized Mortgage Obligations [Member] \| Fair Value, Inputs, Level 1 [Member]
Investment securities available for sale, at fair value	0	0
Fair Value, Recurring [Member] \| Collateralized Mortgage Obligations [Member] \| Fair Value, Inputs, Level 2 [Member]
Investment securities available for sale, at fair value	221,546	331,438
Fair Value, Recurring [Member] \| Collateralized Mortgage Obligations [Member] \| Fair Value, Inputs, Level 3 [Member]
Investment securities available for sale, at fair value	0	0
Fair Value, Recurring [Member] \| Agency Mortgage-backed Securities [Member]
Investment securities available for sale, at fair value	150,528	98,937
Fair Value, Recurring [Member] \| Agency Mortgage-backed Securities [Member] \| Fair Value, Inputs, Level 1 [Member]
Investment securities available for sale, at fair value	0	0
Fair Value, Recurring [Member] \| Agency Mortgage-backed Securities [Member] \| Fair Value, Inputs, Level 2 [Member]
Investment securities available for sale, at fair value	150,528	98,937
Fair Value, Recurring [Member] \| Agency Mortgage-backed Securities [Member] \| Fair Value, Inputs, Level 3 [Member]
Investment securities available for sale, at fair value	0	0
Fair Value, Recurring [Member] \| US States and Political Subdivisions Debt Securities [Member]
Investment securities available for sale, at fair value	8,225	4,082
Fair Value, Recurring [Member] \| US States and Political Subdivisions Debt Securities [Member] \| Fair Value, Inputs, Level 1 [Member]
Investment securities available for sale, at fair value	0	0
Fair Value, Recurring [Member] \| US States and Political Subdivisions Debt Securities [Member] \| Fair Value, Inputs, Level 2 [Member]
Investment securities available for sale, at fair value	8,225	4,082
Fair Value, Recurring [Member] \| US States and Political Subdivisions Debt Securities [Member] \| Fair Value, Inputs, Level 3 [Member]
Investment securities available for sale, at fair value	0	0
Fair Value, Recurring [Member] \| Corporate Debt Securities [Member]
Investment securities available for sale, at fair value	116,323	66,280
Fair Value, Recurring [Member] \| Corporate Debt Securities [Member] \| Fair Value, Inputs, Level 1 [Member]
Investment securities available for sale, at fair value	0	0
Fair Value, Recurring [Member] \| Corporate Debt Securities [Member] \| Fair Value, Inputs, Level 2 [Member]
Investment securities available for sale, at fair value	113,692	63,460
Fair Value, Recurring [Member] \| Corporate Debt Securities [Member] \| Fair Value, Inputs, Level 3 [Member]
Investment securities available for sale, at fair value	2,631	2,820
Fair Value, Recurring [Member] \| Interest Rate Lock Commitments [Member]
Derivative Asset	1,580	362
Derivative Liability	0	0
Fair Value, Recurring [Member] \| Interest Rate Lock Commitments [Member] \| Fair Value, Inputs, Level 1 [Member]
Derivative Asset	0	0
Derivative Liability	0	0
Fair Value, Recurring [Member] \| Interest Rate Lock Commitments [Member] \| Fair Value, Inputs, Level 2 [Member]
Derivative Asset	1,580	362
Derivative Liability	0	0
Fair Value, Recurring [Member] \| Interest Rate Lock Commitments [Member] \| Fair Value, Inputs, Level 3 [Member]
Derivative Asset	0	0
Derivative Liability	0	0
Fair Value, Recurring [Member] \| Best Efforts Forward Loan sales Commitments [Member]
Derivative Asset	2	4
Derivative Liability	612	133
Fair Value, Recurring [Member] \| Best Efforts Forward Loan sales Commitments [Member] \| Fair Value, Inputs, Level 1 [Member]
Derivative Asset	0	0
Derivative Liability	0	0
Fair Value, Recurring [Member] \| Best Efforts Forward Loan sales Commitments [Member] \| Fair Value, Inputs, Level 2 [Member]
Derivative Asset	2	4
Derivative Liability	612	133
Fair Value, Recurring [Member] \| Best Efforts Forward Loan sales Commitments [Member] \| Fair Value, Inputs, Level 3 [Member]
Derivative Asset	0	0
Derivative Liability	0	0
Fair Value, Recurring [Member] \| Mandatory Forward Loan Sales Commitments [Member]
Derivative Asset	0	2
Derivative Liability	800	83
Fair Value, Recurring [Member] \| Mandatory Forward Loan Sales Commitments [Member] \| Fair Value, Inputs, Level 1 [Member]
Derivative Asset	0	0
Derivative Liability	0	0
Fair Value, Recurring [Member] \| Mandatory Forward Loan Sales Commitments [Member] \| Fair Value, Inputs, Level 2 [Member]
Derivative Asset	0	2
Derivative Liability	800	83
Fair Value, Recurring [Member] \| Mandatory Forward Loan Sales Commitments [Member] \| Fair Value, Inputs, Level 3 [Member]
Derivative Asset	0	0
Derivative Liability	$ 0	$ 0