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Share-Based Compensation (Details Narrative) - USD ($)		1 Months Ended	3 Months Ended		9 Months Ended
Share-Based Compensation (Details Narrative) - USD ($)	Feb. 09, 2022	Jan. 31, 2025	Jan. 31, 2025	Jan. 31, 2024	Jan. 31, 2025	Jan. 31, 2024	Apr. 30, 2023	Jan. 18, 2018	Dec. 31, 2015
Share-Based Payment Arrangement, Option [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Intrinsic value of exercisable options		$ 0	$ 0		$ 0
Options unvested		58,000	58,000		58,000
Unvested options intrinsic value		$ 0	$ 0		$ 0
Weighted average remaining contractual term					8 years
Share-based payment arrangement, expense			12,000	$ (49,000)	$ 38,000	$ 50,000
Unrecognized compensation cost related to non-vested stock		35,000	35,000		$ 35,000
Share-based compensation of weighted-average period					1 year
Performance Shares [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Options unvested							66,667
Share-based payment arrangement, expense					$ 0	43,000
Restricted Stock [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Share-based payment arrangement, expense			768,000	$ 179,000	$ 1,293,000	$ 710,000
Share-based compensation of weighted-average period					1 year 8 months 12 days
Number of restricted shares, granted					21,903,000	183,000
Unrecognized compensation cost		$ 17,480,000	$ 17,480,000		$ 17,480,000
2015 Omnibus Incentive Plan [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Share-based compensation arrangement shares authorized		27,282,036	27,282,036		27,282,036				1,332,036
Share-based compensation arrangement shares authorized increase		20,000,000
2018 Inducement Plan [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Share-based compensation arrangement shares authorized	275,000
Share-based compensation arrangement shares authorized increase	250,000
Reserved for future issuance								25,000