Going Concern - Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands			3 Months Ended		9 Months Ended		12 Months Ended	17 Months Ended
	Mar. 27, 2020	Mar. 25, 2020	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2020	Mar. 31, 2019	Jun. 30, 2019	Mar. 25, 2020	Feb. 13, 2020	Sep. 05, 2019
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Working capital			$ 2,000		$ 2,000
Cash and cash equivalents			4,660	$ 1,524	4,660	$ 1,524	$ 1,588
Restricted cash			122		122
Net loss			$ 2,068	$ 1,394	6,219	5,792	7,500
Net cash used in operating activities					(4,956)	(6,550)	$ (8,500)
Net proceeds from sale of common stock	$ 2,900	$ 1,600			$ 5,650	$ 3,919
Issuance of common stock registered direct offering	873,335	354,000	7,975,388		7,975,388		6,184,698	354,000
Common stock par value	$ 0.001	$ 0.001	$ 0.001		$ 0.001		$ 0.001	$ 0.001
Common stock offering price per share	$ 3.75	$ 5.00						$ 5.00
Secured Promissory Note | Private Placement
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Secured note principal amount									$ 1,000	$ 1,500
Common Stock | Market Issuance Sales Agreement
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Net proceeds from sale of common stock								$ 2,300