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						9 Months Ended
	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Mar. 31, 2019	Mar. 31, 2018
Net revenue	$ 103,221			$ 99,832			$ 301,368	$ 291,111
Cost of goods sold	62,755			63,583			184,643	177,401
Other expense, net	(3,829)			(4,465)			(11,133)	(14,774)
Research and development	12,913			13,906			40,442	42,663
Selling and marketing	12,903			14,612			41,078	43,241
General and administrative	11,769			11,552			37,880	34,696
Provision for income taxes	236			566			1,222	1,289
Net loss	$ (1,184)	$ (4,640)	$ (9,206)	$ (8,852)	$ (4,719)	$ (9,382)	$ (15,030)	$ (22,953)
Net loss per share - basic and diluted	$ (0.01)			$ (0.10)			$ (0.17)	$ (0.27)
ASC 606 | Balances Without Adoption
Net revenue	$ 113,712						$ 288,016
Cost of goods sold	67,856						178,038
Other expense, net	(4,019)						(11,582)
Research and development	12,956						40,621
Selling and marketing	13,001						41,635
General and administrative	11,863						38,263
Provision for income taxes	38						1,054
Net loss	$ 3,979						$ (23,177)
Net loss per share - basic and diluted	$ 0.05						$ (0.27)
ASC 606 | Adjustment Due to ASC 606
Net revenue	$ (10,491)						$ 13,352
Cost of goods sold	(5,101)						6,605
Other expense, net	190						449
Research and development	(43)						(179)
Selling and marketing	(98)						(557)
General and administrative	(94)						(383)
Provision for income taxes	198						168
Net loss	$ (5,163)						$ 8,147
Net loss per share - basic and diluted	$ (0.06)						$ 0.09