Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies - Foreign currency (Details)

v3.6.0.2
Summary of Significant Accounting Policies - Foreign currency (Details) - USD ($)
$ in Thousands
6 Months Ended 12 Months Ended
Dec. 31, 2015
Dec. 31, 2016
Jun. 30, 2015
Jun. 30, 2014
Summary of Significant Accounting Policies        
Foreign currency transaction gain $ 12,596 $ 1,002 $ 11,200 $ 254