Note 4 - Loans, Allowance for Loan Losses and Credit Quality - Loans by Risk Rating (Details) - USD ($) $ in Thousands		Dec. 31, 2018	Jun. 30, 2018
Loans by risk rating		$ 875,014	$ 796,682
Financial Asset Originated [Member] | SBA Loan [Member]
Loans by risk rating	[1]	67,282	60,156
Financial Asset Acquired with Credit Deterioration [Member]
Loans by risk rating		330,643	290,972
Commercial Real Estate Portfolio Segment [Member] | Financial Asset Originated [Member]
Loans by risk rating		259,451	249,428
Commercial Portfolio Segment [Member] | Financial Asset Originated [Member]
Loans by risk rating		202,150	181,800
Residential Portfolio Segment [Member] | Financial Asset Originated [Member]
Loans by risk rating		15,488	14,326
Pass [Member]
Loans by risk rating		850,922	774,866
Pass [Member] | Financial Asset Originated [Member] | SBA Loan [Member]
Loans by risk rating	[1]	60,248	54,730
Pass [Member] | Financial Asset Acquired with Credit Deterioration [Member]
Loans by risk rating		318,693	279,111
Pass [Member] | Commercial Real Estate Portfolio Segment [Member] | Financial Asset Originated [Member]
Loans by risk rating		255,540	246,107
Pass [Member] | Commercial Portfolio Segment [Member] | Financial Asset Originated [Member]
Loans by risk rating		201,858	181,515
Pass [Member] | Residential Portfolio Segment [Member] | Financial Asset Originated [Member]
Loans by risk rating		14,583	13,403
Special Mention [Member]
Loans by risk rating		13,181	11,702
Special Mention [Member] | Financial Asset Originated [Member] | SBA Loan [Member]
Loans by risk rating	[1]	5,100	3,882
Special Mention [Member] | Financial Asset Acquired with Credit Deterioration [Member]
Loans by risk rating		6,467	5,899
Special Mention [Member] | Commercial Real Estate Portfolio Segment [Member] | Financial Asset Originated [Member]
Loans by risk rating		1,521	1,821
Special Mention [Member] | Commercial Portfolio Segment [Member] | Financial Asset Originated [Member]
Loans by risk rating
Special Mention [Member] | Residential Portfolio Segment [Member] | Financial Asset Originated [Member]
Loans by risk rating		93	100
Substandard [Member]
Loans by risk rating		10,911	10,114
Substandard [Member] | Financial Asset Originated [Member] | SBA Loan [Member]
Loans by risk rating	[1]	1,934	1,544
Substandard [Member] | Financial Asset Acquired with Credit Deterioration [Member]
Loans by risk rating		5,483	5,962
Substandard [Member] | Commercial Real Estate Portfolio Segment [Member] | Financial Asset Originated [Member]
Loans by risk rating		2,390	1,500
Substandard [Member] | Commercial Portfolio Segment [Member] | Financial Asset Originated [Member]
Loans by risk rating		292	285
Substandard [Member] | Residential Portfolio Segment [Member] | Financial Asset Originated [Member]
Loans by risk rating		812	823
Doubtful [Member]
Loans by risk rating
Doubtful [Member] | Financial Asset Originated [Member] | SBA Loan [Member]
Loans by risk rating	[1]
Doubtful [Member] | Financial Asset Acquired with Credit Deterioration [Member]
Loans by risk rating
Doubtful [Member] | Commercial Real Estate Portfolio Segment [Member] | Financial Asset Originated [Member]
Loans by risk rating
Doubtful [Member] | Commercial Portfolio Segment [Member] | Financial Asset Originated [Member]
Loans by risk rating
Doubtful [Member] | Residential Portfolio Segment [Member] | Financial Asset Originated [Member]
Loans by risk rating
Unlikely to be Collected Financing Receivable [Member]
Loans by risk rating
Unlikely to be Collected Financing Receivable [Member] | Financial Asset Originated [Member] | SBA Loan [Member]
Loans by risk rating	[1]
Unlikely to be Collected Financing Receivable [Member] | Financial Asset Acquired with Credit Deterioration [Member]
Loans by risk rating
Unlikely to be Collected Financing Receivable [Member] | Commercial Real Estate Portfolio Segment [Member] | Financial Asset Originated [Member]
Loans by risk rating
Unlikely to be Collected Financing Receivable [Member] | Commercial Portfolio Segment [Member] | Financial Asset Originated [Member]
Loans by risk rating
Unlikely to be Collected Financing Receivable [Member] | Residential Portfolio Segment [Member] | Financial Asset Originated [Member]
Loans by risk rating

[1] Certain of the Company's loans made for commercial purposes, but secured by residential collateral, are rated under the Company's risk-rating system.