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Loans receivable (Details 3) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2016 | Dec. 31, 2015
Financing Receivable, Impaired [Line Items] |  |  |  |
Impaired loans, Unpaid Principal Balance and Recorded Investment, With No Related Allowance | $ 5,759 | $ 5,481 | $ 5,759 | $ 5,481
Impaired loans, Unpaid Principal Balance and Recorded Investment, With An Allowance | 5,759 | 5,481 | 5,759 | 5,481
Impaired loans, Allowance for Loan Losses Allocated, With No Related Allowance | 0 | 0 | 0 | 0
Impaired loans, Allowance for Loan Losses Allocated, With An Allowance | 0 | 0 | 0 | 0
Impaired loans, Average Recorded Investment, With No Related Allowance | 5,915 | 6,014 | 5,847 | 6,002
Impaired loans, Average Recorded Investment, With An Allowance | 5,915 | 6,014 | 5,847 | 6,002
Impaired loans, Interest Income Recognized, With No Related Allowance | 27 | 13 | 43 | 39
Impaired loans, Interest Income Recognized, With An Allowance | 27 | 13 | 43 | 39
Impaired loans, Cash Basis Income Recognized, With No Related Allowance | 27 | 13 | 43 | 39
Impaired loans, Cash Basis Income Recognized, With An Allowance | 27 | 13 | 43 | 39
Residential Real Estate One To Four Family [Member] |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |
Impaired loans, Unpaid Principal Balance and Recorded Investment, With No Related Allowance | 3,941 | 2,993 | 3,941 | 2,993
Impaired loans, Unpaid Principal Balance and Recorded Investment | 0 | 0 | 0 | 0
Impaired loans, Allowance for Loan Losses Allocated, With No Related Allowance | 0 | 0 | 0 | 0
Impaired loans, Allowance for Loan Losses Allocated | 0 | 0 | 0 | 0
Impaired loans, Average Recorded Investment, With No Related Allowance | 3,960 | 3,280 | 3,774 | 3,022
Impaired loans, Average Recorded Investment | 0 | 0 | 0 | 0
Impaired loans, Interest Income Recognized, With No Related Allowance | 1 | 2 | 3 | 5
Impaired loans, Interest Income Recognized | 0 | 0 | 0 | 0
Impaired loans, Cash Basis Income Recognized, With No Related Allowance | 1 | 2 | 3 | 5
Impaired loans, Cash Basis Income Recognized | 0 | 0 | 0 | 0
Purchased Credit Impaired Loans [Member] |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |
Impaired loans, Unpaid Principal Balance and Recorded Investment, With No Related Allowance | 1,818 | 2,488 | 1,818 | 2,488
Impaired loans, Allowance for Loan Losses Allocated, With No Related Allowance | 0 | 0 | 0 | 0
Impaired loans, Average Recorded Investment, With No Related Allowance | 1,955 | 2,734 | 2,073 | 2,980
Impaired loans, Interest Income Recognized, With No Related Allowance | 26 | 11 | 40 | 34
Impaired loans, Cash Basis Income Recognized, With No Related Allowance | $ 26 | $ 11 | $ 40 | $ 34

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