Stockholders' Equity (Deficit) - Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands			3 Months Ended		17 Months Ended
	Oct. 23, 2020	Oct. 21, 2020	Sep. 30, 2020	Sep. 30, 2019	Mar. 25, 2020	Sep. 11, 2020	Jun. 30, 2020
Class Of Stock [Line Items]
Net proceeds from sale of common stock			$ 0	$ 321
Description of listing compliance			On September 11, 2020, the Company received a notice from the Listing Qualifications Department of the Nasdaq Stock Market LLC (“Nasdaq”) stating that it was not in compliance with the required stockholder’s equity of $2.5 million.
Stockholders’ equity			$ (1,444)			$ 2,500	$ 625
Maximum
Class Of Stock [Line Items]
Stockholders’ equity							$ 2,500
Common Stock
Class Of Stock [Line Items]
Issuance of common stock registered direct offering				146,000
Common Stock | Market Issuance Sales Agreement
Class Of Stock [Line Items]
Issuance of common stock registered direct offering					793,668
Net proceeds from sale of common stock					$ 2,300
Average sale price per share					$ 3.04
Additional common stock shares sold					0
Common Stock | Public Offering Purchase Agreement | Subsequent Event
Class Of Stock [Line Items]
Issuance of common stock registered direct offering		7,826,086
Gross proceeds from public offering of common stock	$ 18,000