Note 15 - Regulatory Capital Ratios (Tables)

12 Months Ended

Mar. 31, 2018

Notes Tables

Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations [Table Text Block]

						Minimum Capital					Minimum Capital					To be well
	Actual					Required - Basel III					Required - Basel III					capitalized (1)
						Phase-In Schedule					Fully Phased-In
	Amount		Ratio			Amount		Ratio			Amount		Ratio			Amount		Ratio
						(dollars in thousands)					(dollars in thousands)
March 31, 2018
Common equity tier 1 capital (to risk-weighted assets)
Hamilton Bank	$	39,126		10.61	%	$	23,498		6.375	%	$	25,802		7.00	%	$	23,959		6.50	%
Hamilton Bancorp		47,308		12.79	%		23,582		6.375	%		25,894		7.00	%		24,044		6.50	%
Total risk-based capital (to risk-weighted assets)
Hamilton Bank		41,998		11.39	%		36,399		9.875	%		38,703		10.50	%		36,860		10.00	%
Hamilton Bancorp		50,180		13.57	%		36,529		9.875	%		38,841		10.50	%		36,992		10.00	%
Tier 1 capital (to risk-weighted assets)
Hamilton Bank		39,126		10.61	%		29,027		7.875	%		31,331		8.50	%		29,488		8.00	%
Hamilton Bancorp		47,308		12.79	%		29,131		7.875	%		31,443		8.50	%		29,593		8.00	%
Tier 1 capital (to adjusted total assets)
Hamilton Bank		39,126		7.64	%		20,497		4.000	%		20,497		4.00	%		25,621		5.00	%
Hamilton Bancorp		47,308		8.15	%		20,674		4.000	%		20,674		4.00	%		25,843		5.00	%
March 31, 2017
Common equity tier 1 capital (to risk-weighted assets)
Hamilton Bank	$	40,084		12.13	%	$	18,996		5.750	%	$	23,126		7.00	%	$	21,474		6.50	%
Hamilton Bancorp		48,318		14.56	%		19,078		5.750	%		23,225		7.00	%	$	21,566		6.50	%
Total risk-based capital (to risk-weighted assets)
Hamilton Bank		42,334		12.81	%		30,559		9.250	%		34,689		10.50	%		33,037		10.00	%
Hamilton Bancorp		50,568		15.24	%		30,690		9.250	%		34,838		10.50	%		33,179		10.00	%
Tier 1 capital (to risk-weighted assets)
Hamilton Bank		40,084		12.13	%		23,952		7.250	%		28,081		8.50	%		26,429		8.00	%
Hamilton Bancorp		48,318		14.56	%		24,055		7.250	%		28,202		8.50	%		26,543		8.00	%
Tier 1 capital (to adjusted total assets)
Hamilton Bank		40,084		8.28	%		19,365		4.000	%		19,365		4.00	%		24,207		5.00	%
Hamilton Bancorp		48,318		9.96	%		19,402		4.000	%		19,402		4.00	%		24,253		5.00	%