Leases - Additional Information (Details)	3 Months Ended
	Jun. 30, 2019 USD ($) ft²	Jun. 30, 2018 USD ($)	Apr. 01, 2019 USD ($)	Mar. 31, 2019 USD ($)	Mar. 21, 2019
Operating Lease [Line Items]
Operating right-of-use assets	$ 4,288,000		$ 4,500,000	$ 0
Operating lease liability	$ 4,820,000		5,000,000
Deferred rent			$ 600,000
Office space under lease agreement | ft²	45,580
Monthly rental payments	$ 87,000
Base rent escalators	3.00%
Landlord tenant improvements funded amount	$ 500,000
Lease option termination description	0
Lease term					36 months
Operating lease expense	$ 262,000
Rent expense		$ 325,000
Variable lease expense	107,000
Short term lease cost	$ 15,000
Lease Term For Remainder of Total Rentable Square Footage [Member]
Operating Lease [Line Items]
Lease expiration date	Aug. 31, 2024
Lease Term For 14,685 of Total Rentable Square Footage [Member]
Operating Lease [Line Items]
Office space under lease agreement | ft²	14,685
Lease expiration date	Oct. 31, 2018