Stockholders' Equity - Additional Information (Details) - USD ($)							3 Months Ended			6 Months Ended		17 Months Ended
	Dec. 18, 2020	Oct. 30, 2020	Oct. 28, 2020	Oct. 23, 2020	Oct. 21, 2020	Jul. 23, 2020	Dec. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Dec. 31, 2020	Dec. 31, 2019	Mar. 25, 2020	Sep. 11, 2020	Jun. 30, 2020
Class Of Stock [Line Items]
Net proceeds from sale of common stock										$ 21,828,000	$ 1,272,000
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							$ 18,810,000			$ 18,810,000			$ 2,500,000	$ 625,000
Maximum
Class Of Stock [Line Items]
Stockholders' equity														$ 2,500,000
Common Stock
Class Of Stock [Line Items]
Issuance of common stock registered direct offering							10,714,000	433,000	146,000
Common Stock | Public Offering Purchase Agreement
Class Of Stock [Line Items]
Issuance of common stock registered direct offering					7,826,086
Common stock par value					$ 0.001
Common stock offering price per share					$ 2.30
Gross proceeds before deducting placement agent’s fees and related offering expenses				$ 18,000,000
Common Stock | Second Purchase Agreement
Class Of Stock [Line Items]
Issuance of common stock registered direct offering			2,887,906
Common stock offering price per share			$ 2.15
Gross proceeds before deducting placement agent’s fees and related offering expenses		$ 6,200,000
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												$ 2,300,000
Average sale price per share												$ 3.04
Additional common stock shares sold												0
Common Stock | At-the-Market Offering Agreement | Maximum
Class Of Stock [Line Items]
Common stock issuable aggregate offering price	$ 3,582,614
Warrants
Class Of Stock [Line Items]
Warrants issued							728,752			728,752				85,913
Warrants | Public Offering Purchase Agreement | Placement Agent
Class Of Stock [Line Items]
Warrants issued						469,565
Percentage of shares sold in offering						6.00%
Exercise price of warrants						$ 2.875
Percentage of per share offering price of shares						125.00%
Warrants maturity date						Oct. 21, 2025
Fair value per share of warrants						$ 2.01
Warrants | Second Purchase Agreement | Placement Agent
Class Of Stock [Line Items]
Warrants issued						173,274
Percentage of shares sold in offering						6.00%
Exercise price of warrants						$ 2.6875
Percentage of per share offering price of shares						125.00%
Warrants maturity date						Oct. 28, 2025
Fair value per share of warrants						$ 1.80