Condensed Consolidated Statement of Changes in Stockholders' Equity (Deficit) - USD ($) shares in Thousands, $ in Thousands	Total	Preferred Stock Series D	Common Stock	Treasury Stock Amount	Additional Paid-In Capital	Accumulated Deficit	Accumulated Other Comprehensive Loss
Balance, beginning of period at Jun. 30, 2020	$ 625		$ 190,599	$ (4,129)	$ 13,934	$ (199,779)
Balance (in shares) at Jun. 30, 2020		281	7,850
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock offering costs	(2)				(2)
Stock-based compensation	49				49
Restricted stock cancellation	(5)				(5)
Restricted stock cancellation (in shares)			(6)
Net loss	(2,111)					(2,111)
Balance, end of period at Sep. 30, 2020	(1,444)		$ 190,599	(4,129)	13,976	(201,890)
Balance (in shares) at Sep. 30, 2020		281	7,844
Balance, beginning of period at Jun. 30, 2020	625		$ 190,599	(4,129)	13,934	(199,779)
Balance (in shares) at Jun. 30, 2020		281	7,850
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(3,733)
Balance, end of period at Dec. 31, 2020	18,810		$ 190,610	(4,129)	35,841	(203,512)
Balance (in shares) at Dec. 31, 2020		281	18,541
Balance, beginning of period at Sep. 30, 2020	(1,444)		$ 190,599	(4,129)	13,976	(201,890)
Balance (in shares) at Sep. 30, 2020		281	7,844
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of stock, net of offering costs	21,830		$ 11		21,819
Issuance of stock, net of offering costs (in shares)			10,714
Stock-based compensation	47				47
Restricted stock cancellation	(1)				(1)
Restricted stock cancellation (in shares)			(17)
Net loss	(1,622)					(1,622)
Balance, end of period at Dec. 31, 2020	18,810		$ 190,610	$ (4,129)	35,841	(203,512)
Balance (in shares) at Dec. 31, 2020		281	18,541
Balance, beginning of period at Jun. 30, 2021	61,207		$ 190,641		77,971	(207,382)	$ (23)
Balance (in shares) at Jun. 30, 2021		281	49,451
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net change in available-for-sale marketable securities	(48)						(48)
Stock-based compensation	359				359
Net loss	(2,029)					(2,029)
Balance, end of period at Sep. 30, 2021	59,489		$ 190,641		78,330	(209,411)	(71)
Balance (in shares) at Sep. 30, 2021		281	49,451
Balance, beginning of period at Jun. 30, 2021	61,207		$ 190,641		77,971	(207,382)	(23)
Balance (in shares) at Jun. 30, 2021		281	49,451
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(4,209)
Balance, end of period at Dec. 31, 2021	57,551		$ 190,641		78,769	(211,591)	(268)
Balance (in shares) at Dec. 31, 2021		281	49,514
Balance, beginning of period at Sep. 30, 2021	59,489		$ 190,641		78,330	(209,411)	(71)
Balance (in shares) at Sep. 30, 2021		281	49,451
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net change in available-for-sale marketable securities	(197)						(197)
Stock-based compensation	439				439
Stock-based compensation (in shares)			63
Net loss	(2,180)					(2,180)
Balance, end of period at Dec. 31, 2021	$ 57,551		$ 190,641		$ 78,769	$ (211,591)	$ (268)
Balance (in shares) at Dec. 31, 2021		281	49,514