Note 4 - Loans, Allowance for Loan Losses and Credit Quality - TDRs Pre- and Post-modification (Details) $ in Thousands	3 Months Ended	6 Months Ended
Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)
Number of Contracts	3	6	6	8
Recorded Investment Pre-Modification	$ 20	$ 2,499	$ 190	$ 3,172
Recorded Investment	$ 20	$ 2,561	$ 190	$ 3,234
Financial Asset Originated [Member]
Number of Contracts		4	3	6
Recorded Investment Pre-Modification		$ 2,108	$ 170	$ 2,781
Recorded Investment		$ 2,170	$ 170	$ 2,843
Financial Asset Acquired with Credit Deterioration [Member]
Number of Contracts	3	2	3	2
Recorded Investment Pre-Modification	$ 20	$ 391	$ 20	$ 391
Recorded Investment	$ 20	$ 391	$ 20	$ 391
Residential Portfolio Segment [Member] \| Financial Asset Originated [Member]
Number of Contracts		2	3	3
Recorded Investment Pre-Modification		$ 29	$ 170	$ 47
Recorded Investment		$ 30	$ 170	$ 48
Residential Portfolio Segment [Member] \| Financial Asset Acquired with Credit Deterioration [Member]
Number of Contracts
Recorded Investment Pre-Modification
Recorded Investment
Commercial Real Estate Portfolio Segment [Member] \| Financial Asset Originated [Member]
Number of Contracts		2		2
Recorded Investment Pre-Modification		$ 2,079		$ 2,079
Recorded Investment		$ 2,140		$ 2,140
Commercial Real Estate Portfolio Segment [Member] \| Financial Asset Acquired with Credit Deterioration [Member]
Number of Contracts		1		1
Recorded Investment Pre-Modification		$ 123		$ 123
Recorded Investment		$ 123		$ 123
Commercial Portfolio Segment [Member] \| Financial Asset Originated [Member]
Number of Contracts				1
Recorded Investment Pre-Modification				$ 655
Recorded Investment				$ 655
Commercial Portfolio Segment [Member] \| Financial Asset Acquired with Credit Deterioration [Member]
Number of Contracts	3	1	3	1
Recorded Investment Pre-Modification	$ 20	$ 268	$ 20	$ 268
Recorded Investment	$ 20	$ 268	$ 20	$ 268
Consumer Portfolio Segment [Member] \| Financial Asset Originated [Member]
Number of Contracts
Recorded Investment Pre-Modification
Recorded Investment

Number of financing receivables that have been modified by troubled debt restructurings.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 33
-URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953676-111524

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