Note 11 - Regulatory Restrictions (Tables)

9 Months Ended

Sep. 30, 2018

Banking And Thrift [Abstract]

Capital Ratios and Regulatory Minimum Requirements

	Capital levels
	Actual					Adequately capitalized					Well capitalized
As of September 30, 2018	Amount		Ratio			Amount		Ratio			Amount		Ratio
Total risk-based capital (to risk-weighted assets):
Consolidated	$	118,529		12.80	%	$	74,056		8.00	%	$	92,570		10.00	%
Bank		108,267		12.11			71,551	8.00				89,439	10.00
Tier I capital (to risk-weighted assets):
Consolidated		109,811		11.86			55,542	6.00				55,542	6.00
Bank		99,549		11.13			53,663	6.00				71,551	8.00
Common equity tier 1 capital (to risk-weighted    assets):
Consolidated		109,811		11.86		$	41,656	4.50			N/A		N/A
Bank		99,549		11.13			40,248	4.50				58,135	6.50
Tier I capital (to average assets):
Consolidated		109,811		9.23		$	47,605	4.00			N/A		N/A
Bank		99,549		8.44			47,203	4.00				59,003	5.00

	Capital levels
	Actual					Adequately capitalized					Well capitalized
As of December 31, 2017	Amount		Ratio			Amount		Ratio			Amount		Ratio
Total risk-based capital (to risk-weighted assets):
Consolidated	$	110,352		12.52	%	$	70,520		8.00	%	$	88,150		10.00	%
Bank		101,040		11.67			69,277	8.00				86,596	10.00
Tier I capital (to risk-weighted assets):
Consolidated		102,438		11.62			52,890	6.00				52,890	6.00
Bank		93,126		10.75			51,957	6.00				69,277	8.00
Common equity tier 1 capital (to risk-weighted    assets):
Consolidated		102,438		11.62			39,668	4.50			N/A		N/A
Bank		93,126		10.75			38,968	4.50				56,287	6.50
Tier I capital (to average assets):
Consolidated		102,438		8.88			46,149	4.00			N/A		N/A
Bank		93,126		8.14			45,761	4.00				57,201	5.00