Equity - Incentive Plan (Details) - shares	Oct. 29, 2018	Sep. 30, 2019	Nov. 07, 2016
RSUs | Officer
Shares Reserved For Future Issuance
Number of shares of common stock authorized for issuance		5,200,000
2016 Plan
Stock Incentive Plans and Plan Amendment
Number of shares reserved for future issuance			3,529,109
Shares Reserved For Future Issuance
Shares of common stock issuable	12,725,963
Maximum number of shares that can be awarded to any employee in one year	500,000
Number of shares of common stock authorized for issuance		3,007,747
2016 Plan | RSUs
Shares Reserved For Future Issuance
Shares of common stock issuable		7,964,156
Amended And Restated Plan
Shares Reserved For Future Issuance
Shares of common stock issuable		444