Revenue - Schedule of Effect of Adoption of ASC 606 on Balance Sheets (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Jul. 01, 2018	Jun. 30, 2018
ASSETS
Account receivable, net	$ 66,420		$ 65,994
Deferred cost of revenue - current	220		1,141
Prepaid expenses and other current assets	17,075		15,569
Other assets	14,749		11,576
LIABILITIES AND STOCKHOLDERS' EQUITY
Other accrued liabilities	21,240		22,448
Deferred revenue - current	72,278	$ 75,515	75,404
Long-term other liabilities	9,890		8,608
Accumulated deficit	(478,377)		$ (474,285)
ASC 606
ASSETS
Account receivable, net		66,251
Deferred cost of revenue - current		677
Prepaid expenses and other current assets		16,239
Other assets		17,416
LIABILITIES AND STOCKHOLDERS' EQUITY
Other accrued liabilities		23,059
Deferred revenue - current		75,515
Long-term other liabilities		9,075
Accumulated deficit		$ (469,171)
ASC 606 | Balances Without Adoption
ASSETS
Account receivable, net	61,798
Deferred cost of revenue - current	11,300
Prepaid expenses and other current assets	16,118
Other assets	8,711
LIABILITIES AND STOCKHOLDERS' EQUITY
Other accrued liabilities	20,606
Deferred revenue - current	86,592
Long-term other liabilities	9,186
Accumulated deficit	(491,890)
ASC 606 | Adjustment Due to ASC 606
ASSETS
Account receivable, net	4,622
Deferred cost of revenue - current	(11,080)
Prepaid expenses and other current assets	957
Other assets	6,038
LIABILITIES AND STOCKHOLDERS' EQUITY
Other accrued liabilities	634
Deferred revenue - current	(14,314)
Long-term other liabilities	704
Accumulated deficit	$ 13,513