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Noncontrolling Interest - Contributions (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended	12 Months Ended			42 Months Ended
	Mar. 31, 2015	Jun. 30, 2015	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2018
Noncontrolling Interest [Line Items]
Contributions made				$ 0
Astral Images, Inc
Noncontrolling Interest [Line Items]
Ownership percentage	72.00%	83.00%	100.00%	100.00%	92.00%	100.00%
ASTC Contribution
Noncontrolling Interest [Line Items]
Contributions made	$ 1,422	$ 1,000		$ 3,500	$ 3,000	$ 8,922
Noncontrolling Owner
Noncontrolling Interest [Line Items]
Contributions made	$ 422	$ 0	$ 0		$ 0	$ 0
Contributions made				$ (422)