Stockholders' Equity - Additional Information (Details) - USD ($)		1 Months Ended		3 Months Ended
	Apr. 12, 2019	Apr. 30, 2019	Jan. 31, 2018	Mar. 31, 2020	Mar. 31, 2019	Feb. 15, 2018
Stockholders Equity [Line Items]
Aggregate commission rate			3.00%
Warrants exercised (in shares)				3	0
Warrant, exercise price, decrease		$ 0.98
Amount recorded to additional paid in capital as a result of triggered anti-diluted provisions		$ 800,000
Issuance of common stock from the exercise of warrants (in shares)				1,699,000
Warrant exercises, gross				$ 1,700,000
ATM Sales Agreement
Stockholders Equity [Line Items]
Common stock, shares issued and sold (in shares)				3,308,003
Gross proceeds on sale of shares of common stock				$ 5,400,000
Offering expenses				$ 220,000
Public Stock Offering
Stockholders Equity [Line Items]
Common stock, shares issued and sold (in shares)		4,575,000
Public offering price in the offering (in usd per share)		$ 1.1
Underwritten Offering
Stockholders Equity [Line Items]
Common stock, shares issued and sold (in shares)		5,261,250
Underwriters overallotment option to purchase additional shares of common stock and warrants period	30 days
Underwriters option to purchase additional shares (in shares)		686,250
Gross proceeds from offering of common stock and warrants		$ 5,800,000
Proceeds received in public offering, net of underwriting discounts and offering expenses		$ 5,200,000
Accounting Standards Update 2017-11
Stockholders Equity [Line Items]
Estimated fair value of warrants recorded in equity						$ 3,000,000