Note 19 - Regulatory and Operational Matters - Regulatory Capital Amounts and Ratios (Details) - USD ($) $ in Thousands		Dec. 31, 2019	Jan. 01, 2019	Dec. 31, 2018
Total Capital (to Risk Weighted Assets) To Be Well Capitalized Under Prompt Corrective Action Provisions Ratio		0.1
Total Capital (to Risk Weighted Assets) For Capital Adequacy Purposes Ratio			0.105
Tier 1 Capital (to Risk Weighted Assets) To Be Well Capitalized Under Prompt Corrective Action Provisions Ratio		0.08
Tier 1 Capital (to Risk Weighted Assets) For Capital Adequacy Purposes With Capital Buffer Ratio			8.50%
Common Equity Tier 1 Capital (to Risk Weighted Assets) For Capital Adequacy Purposes Ratio		6.50%	7.00%
Tier 1 Capital (to Average Assets) To Be Well Capitalized Under Prompt Corrective Action Provisions Ratio		0.09
Parent Company [Member]
Total Capital (to Risk Weighted Assets) Actual Amount		$ 90,083		$ 90,722
Total Capital (to Risk Weighted Assets) Actual Ratio		0.1051		0.10452
Total Capital (to Risk Weighted Assets) To Be Well Capitalized Under Prompt Corrective Action Provisions Amount	[1]
Total Capital (to Risk Weighted Assets) To Be Well Capitalized Under Prompt Corrective Action Provisions Ratio	[1]
Total Capital (to Risk Weighted Assets) For Capital Adequacy Purposes With Capital Buffer Amount	[2]
Total Capital (to Risk Weighted Assets) For Capital Adequacy Purposes With Capital Buffer Ratio	[2]
Total Capital (to Risk Weighted Assets) For Capital Adequacy Purposes Amount		$ 68,573		$ 69,441
Total Capital (to Risk Weighted Assets) For Capital Adequacy Purposes Ratio		0.08		0.08
Tier 1 Capital (to Risk Weighted Assets) Actual Amount		$ 69,957		$ 73,101
Tier 1 Capital (to Risk Weighted Assets) Actual Ratio		0.08161		0.08422
Tier 1 Capital (to Risk Weighted Assets) To Be Well Capitalized Under Prompt Corrective Action Provisions Amount	[1]
Tier 1 Capital (to Risk Weighted Assets) To Be Well Capitalized Under Prompt Corrective Action Provisions Ratio	[1]
Tier 1 Capital (to Risk Weighted Assets) For Capital Adequacy Purposes With Capital Buffer Amount	[2]
Tier 1 Capital (to Risk Weighted Assets) For Capital Adequacy Purposes With Capital Buffer Ratio	[2]
Tier 1 Capital (to Risk Weighted Assets) For Capital Adequacy Purposes Amount		$ 51,430		$ 52,081
Tier 1 Capital (to Risk Weighted Assets) For Capital Adequacy Purposes Ratio		0.06		0.06
Common Equity Tier 1 Capital (to Risk Weighted Assets) Actual Amount		$ 61,957		$ 65,101
Common Equity Tier 1 Capital (to Risk Weighted Assets) Actual Ratio		0.07228		0.075
Common Equity Tier 1 Capital (to Risk Weighted Assets) To Be Well Capitalized Under Prompt Corrective Action Provisions Amount	[1]
Common Equity Tier 1 Capital (to Risk Weighted Assets) To Be Well Capitalized Under Prompt Corrective Action Provisions Ratio	[1]
Common Equity Tier 1 Capital (to Risk Weighted Assets) For Capital Adequacy Purposes With Capital Buffer Amount	[2]
Common Equity Tier 1 Capital (to Risk Weighted Assets) For Capital Adequacy Purposes With Capital Buffer Ratio	[2]
Common Equity Tier 1 Capital (to Risk Weighted Assets) For Capital Adequacy Purposes Amount		$ 38,572		$ 39,061
Common Equity Tier 1 Capital (to Risk Weighted Assets) For Capital Adequacy Purposes Ratio		4.50%		4.50%
Tier 1 Capital (to Average Assets) Actual Amount		$ 69,957		$ 73,101
Tier 1 Capital (to Average Assets) Actual Ratio		0.07148		0.07842
Tier 1 Capital (to Average Assets) To Be Well Capitalized Under Prompt Corrective Action Provisions Amount	[1]
Tier 1 Capital (to Average Assets) To Be Well Capitalized Under Prompt Corrective Action Provisions Ratio	[1]
Tier 1 Capital (to Average Assets) For Capital Adequacy Purposes Amount		$ 39,148		$ 37,288
Tier 1 Capital (to Average Assets) For Capital Adequacy Purposes Ratio		0.04		0.04
Subsidiaries [Member]
Total Capital (to Risk Weighted Assets) Actual Amount		$ 100,953		$ 99,341
Total Capital (to Risk Weighted Assets) Actual Ratio		0.11826		0.115
Total Capital (to Risk Weighted Assets) To Be Well Capitalized Under Prompt Corrective Action Provisions Amount	[1]	$ 85,362		$ 86,384
Total Capital (to Risk Weighted Assets) To Be Well Capitalized Under Prompt Corrective Action Provisions Ratio	[1]	0.1		0.1
Total Capital (to Risk Weighted Assets) For Capital Adequacy Purposes With Capital Buffer Amount	[2]	$ 89,630		$ 85,304
Total Capital (to Risk Weighted Assets) For Capital Adequacy Purposes With Capital Buffer Ratio	[2]	10.50%		9.875%
Total Capital (to Risk Weighted Assets) For Capital Adequacy Purposes Amount		$ 68,290		$ 69,107
Total Capital (to Risk Weighted Assets) For Capital Adequacy Purposes Ratio		0.08		0.08
Tier 1 Capital (to Risk Weighted Assets) Actual Amount		$ 90,827		$ 91,720
Tier 1 Capital (to Risk Weighted Assets) Actual Ratio		0.1064		0.10618
Tier 1 Capital (to Risk Weighted Assets) To Be Well Capitalized Under Prompt Corrective Action Provisions Amount	[1]	$ 68,290		$ 69,107
Tier 1 Capital (to Risk Weighted Assets) To Be Well Capitalized Under Prompt Corrective Action Provisions Ratio	[1]	0.08		0.08
Tier 1 Capital (to Risk Weighted Assets) For Capital Adequacy Purposes With Capital Buffer Amount	[2]	$ 72,558		$ 68,027
Tier 1 Capital (to Risk Weighted Assets) For Capital Adequacy Purposes With Capital Buffer Ratio	[2]	8.50%		7.875%
Tier 1 Capital (to Risk Weighted Assets) For Capital Adequacy Purposes Amount		$ 51,217		$ 51,830
Tier 1 Capital (to Risk Weighted Assets) For Capital Adequacy Purposes Ratio		0.06		0.06
Common Equity Tier 1 Capital (to Risk Weighted Assets) Actual Amount		$ 90,827		$ 91,720
Common Equity Tier 1 Capital (to Risk Weighted Assets) Actual Ratio		0.1064		0.10618
Common Equity Tier 1 Capital (to Risk Weighted Assets) To Be Well Capitalized Under Prompt Corrective Action Provisions Amount	[1]	$ 55,485		$ 56,149
Common Equity Tier 1 Capital (to Risk Weighted Assets) To Be Well Capitalized Under Prompt Corrective Action Provisions Ratio	[1]	6.50%		6.50%
Common Equity Tier 1 Capital (to Risk Weighted Assets) For Capital Adequacy Purposes With Capital Buffer Amount	[2]	$ 59,753		$ 55,069
Common Equity Tier 1 Capital (to Risk Weighted Assets) For Capital Adequacy Purposes With Capital Buffer Ratio	[2]	7.00%		6.375%
Common Equity Tier 1 Capital (to Risk Weighted Assets) For Capital Adequacy Purposes Amount		$ 38,413		$ 38,873
Common Equity Tier 1 Capital (to Risk Weighted Assets) For Capital Adequacy Purposes Ratio		4.50%		4.50%
Tier 1 Capital (to Average Assets) Actual Amount		$ 90,827		$ 91,720
Tier 1 Capital (to Average Assets) Actual Ratio		0.09279		0.09838
Tier 1 Capital (to Average Assets) To Be Well Capitalized Under Prompt Corrective Action Provisions Amount	[1]	$ 48,944		$ 46,617
Tier 1 Capital (to Average Assets) To Be Well Capitalized Under Prompt Corrective Action Provisions Ratio	[1]	0.05		0.05
Tier 1 Capital (to Average Assets) For Capital Adequacy Purposes Amount		$ 39,155		$ 37,294
Tier 1 Capital (to Average Assets) For Capital Adequacy Purposes Ratio		0.04		0.04

[1] Designation as "Well Capitalized" does not apply to bank holding companies - the Company. Such categorization of capital adequacy only applies to insured depository institutions - the Bank.

[2] The Capital Conservation Buffer implemented by the FDIC began to be phased in beginning January 1, 2016. It was not applicable to periods prior to that date and does not apply to bank holding companies - the Company.