Share Capital, Option Plans and Share-Based Payments - Schedule of Outstanding Stock Options Activity (Details) $ / shares in Units, $ in Thousands	6 Months Ended
	Dec. 31, 2017 USD ($) $ / shares shares
Options
Outstanding at beginning of period (in shares) | shares	8,977,830
Granted (in shares) | shares	823,830
Exercised (in shares) | shares	(1,193,226)
Forfeited or expired (in shares) | shares	(156,004)
Outstanding at end of period (in shares) | shares	8,452,430
Exercisable ending balance (in shares) | shares	3,224,756
Weighted- Average Exercise Price
Outstanding at beginning of period (in dollars per share) | $ / shares	$ 24.57
Granted (in dollars per share) | $ / shares	34.49
Exercised (in dollars per share) | $ / shares	16.37
Forfeited or expired (in dollars per share) | $ / shares	31.23
Outstanding at end of period (in dollars per share) | $ / shares	26.57
Exercisable at end of period (in dollars per share) | $ / shares	$ 21.74
Weighted- Average Remaining Contractual Term (years)
Outstanding (in years)	4 years 4 months 2 days
Exercisable (in years)	2 years 11 months 16 days
Aggregate Intrinsic Value ($’000s)
Outstanding | $	$ 76,949
Exercisable | $	$ 44,909