Annual report pursuant to Section 13 and 15(d)

Commitments and contingencies (Details 1)

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Commitments and contingencies (Details 1)
12 Months Ended
Jun. 30, 2018
USD ($)
Commitments and Contingencies Disclosure [Abstract]  
Year 1, ended June 26, 2018 $ 5,960,000
Year 2, ending June 26, 2019 3,973,333
Year 3, ending June 26, 2020 $ 1,986,667