Note 15 - Regulatory Capital Requirements (Tables)

12 Months Ended

Jun. 30, 2015

Disclosure Text Block [Abstract]

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

	June 30,
	2015					2014
	(dollars in thousands)
California First National Bancorp	Amount		Ratio			Amount		Ratio
Common equity Tier 1 capital	$	187,987		29.17	%	$	183,321		31.84	%
Tier 1 risk-based capital	$	187,987		29.17	%	$	183,321		31.84	%
Total risk-based capital	$	194,493		30.18	%	$	188,645		32.76	%
Tier 1 leverage capital	$	187,987		26.79	%	$	183,321		32.80	%
California First National Bank
Common equity Tier 1 capital	$	109,147		17.65	%	$	102,780		19.61	%
Tier 1 risk-based capital	$	109,147		17.65	%	$	102,780		19.61	%
Total risk-based capital	$	115,306		18.65	%	$	107,639		20.54	%
Tier 1 leverage capital	$	109,147		17.10	%	$	102,780		21.09	%