Revenue - Narrative (Details) $ in Millions	6 Months Ended
	Dec. 31, 2018 USD ($) Segment	Jun. 30, 2018 USD ($)
Revenue from Contract with Customer [Abstract]
Money back guarantee period	30 days
Percentage of products can be returned for a full refund by terminated distributors (up to)	30.00%
Percent of restocking fee	10.00%
Returns liability reserve, net | $	$ 0.3	$ 0.4
Number of geographic segments | Segment	2