Stockholders Equity - Summary of Shares Purchased under ESPP'S Six Month Purchase Periods (Details) - $ / shares	6 Months Ended
	Dec. 31, 2019	Jun. 30, 2019	Dec. 31, 2018	Jun. 30, 2018
Class Of Stock [Line Items]
Number of Shares	39,967	39,989	39,981	39,976
2014 Employee Stock Purchase Plan Group A
Class Of Stock [Line Items]
Number of Shares	27,449	29,580	35,805	39,976
Price per Share	$ 0.57	$ 1.57	$ 1.57	$ 1.57
2014 Employee Stock Purchase Plan Group B
Class Of Stock [Line Items]
Number of Shares	5,240	5,828	4,176
Price per Share	$ 0.57	$ 1.79	$ 2.81
2014 Employee Stock Purchase Plan Group C
Class Of Stock [Line Items]
Number of Shares	4,804	4,581
Price per Share	$ 0.57	$ 1.79
2014 Employee Stock Purchase Plan Group D
Class Of Stock [Line Items]
Number of Shares	2,474
Price per Share	$ 0.57