Quarterly report pursuant to Section 13 or 15(d)

Contingencies and commitments - Capital Commitments (Details)

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Contingencies and commitments - Capital Commitments (Details) - Capital commitments
$ in Thousands
Jun. 30, 2016
USD ($)
Contingencies and commitments  
Committed amount $ 18,637
Committed amount expected to be paid within one year 13,789
Committed amount expected to be paid in one to three years $ 4,848