Summary of Significant Accounting Policies - Goodwill (Details) $ in Thousands	6 Months Ended
	Dec. 31, 2016 USD ($)
Goodwill [Roll Forward]
Beginning Balance	$ 324,520
Foreign currency translation	(2,149)
Ending Balance	322,371
United States
Goodwill [Roll Forward]
Beginning Balance	270,045
Foreign currency translation	0
Ending Balance	270,045
Canada
Goodwill [Roll Forward]
Beginning Balance	54,475
Foreign currency translation	(2,149)
Ending Balance	$ 52,326