Loans receivable (Details 6) - Residential Real Estate [Member] - USD ($) $ in Thousands	6 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Financing Receivable, Modifications [Line Items]
Financing Receivable, Extension of loan term	$ 98
Financing Receivable, Rate Reduction		$ 3
Performing Financing Receivable [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Extension of loan term	98
Financing Receivable, Rate Reduction		3
Nonperforming Financing Receivable [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Extension of loan term	$ 0
Financing Receivable, Rate Reduction		$ 0