Revenue - Schedule of Effect of Adoption of ASC 606 on Condensed Consolidated Statements of Operations and Comprehensive Loss (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended			6 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Dec. 31, 2017	Dec. 31, 2018	Dec. 31, 2017
Net revenue	$ 102,318		$ 100,329	$ 198,147	$ 191,279
Cost of goods sold	63,938		60,974	121,888	113,818
Other expense, net	(3,321)		(3,738)	(7,304)	(10,309)
Research and development	13,640		14,664	27,529	28,757
Selling and marketing	15,139		13,872	28,175	28,629
General and administrative	10,469		11,836	26,111	23,144
Provision for income taxes	451		(36)	986	723
Net loss	$ (4,640)	$ (9,206)	$ (4,719)	$ (13,846)	$ (14,101)
Net loss per share - basic and diluted	$ (0.05)		$ (0.06)	$ (0.16)	$ (0.17)
ASC 606 | Balances Without Adoption
Net revenue	$ 97,190			$ 174,304
Cost of goods sold	62,826			110,182
Other expense, net	(3,492)			(7,563)
Research and development	13,744			27,665
Selling and marketing	15,408			28,634
General and administrative	10,715			26,400
Provision for income taxes	556			1,016
Net loss	$ (9,551)			$ (27,156)
Net loss per share - basic and diluted	$ (0.11)			$ (0.31)
ASC 606 | Adjustment Due to ASC 606
Net revenue	$ 5,128			$ 23,843
Cost of goods sold	1,112			11,706
Other expense, net	171			259
Research and development	(104)			(136)
Selling and marketing	(269)			(459)
General and administrative	(246)			(289)
Provision for income taxes	(105)			(30)
Net loss	$ 4,911			$ 13,310
Net loss per share - basic and diluted	$ 0.06			$ 0.15