Condensed Consolidated Statements of Stockholders' Equity (Unaudited) - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	Treasury Stock, Common [Member]	Retained Earnings [Member]	Parent [Member]	Total
Balance (in shares) at Apr. 30, 2023	80,871,211		3,979,522
Balance at Apr. 30, 2023	$ 808	$ 13,647	$ (2,138)	$ 34,464	$ 46,781
Stock repurchase (in shares)	0		6,863,789			6,863,789	[1]
Stock repurchase	$ 0	0	$ (5,035)	0	(5,035)
Deferred compensation, restricted stock (in shares)	(1,300,000)		0
Deferred compensation, restricted stock	$ (13)	(236)	$ 0	0	(249)
Net Income	$ 0	0	$ 0	719	719
Balance (in shares) at Jul. 31, 2023	79,571,211		10,843,311
Balance at Jul. 31, 2023	$ 795	13,411	$ (7,173)	35,183	42,216
Balance (in shares) at Apr. 30, 2023	80,871,211		3,979,522
Balance at Apr. 30, 2023	$ 808	13,647	$ (2,138)	34,464	46,781
Net Income						$ 5,670
Balance (in shares) at Oct. 31, 2023	79,871,211		10,845,611
Balance at Oct. 31, 2023	$ 798	13,734	$ (7,174)	40,134	47,492
Balance (in shares) at Jul. 31, 2023	79,571,211		10,843,311
Balance at Jul. 31, 2023	$ 795	13,411	$ (7,173)	35,183	42,216
Stock repurchase (in shares)	0		2,300			2,300	[1]
Stock repurchase	$ 0	0	$ (1)	0	(1)
Deferred compensation, restricted stock (in shares)	0		0
Deferred compensation, restricted stock	$ 0	104	$ 0	0	104
Net Income	$ 0	0	$ 0	4,951	4,951	$ 4,951
Stock awarded to director (in shares)	300,000		0
Stock awarded to director	$ 3	219	$ 0	0	222
Balance (in shares) at Oct. 31, 2023	79,871,211		10,845,611
Balance at Oct. 31, 2023	$ 798	13,734	$ (7,174)	40,134	47,492
Balance (in shares) at Apr. 30, 2024	79,646,211		10,875,355
Balance at Apr. 30, 2024	$ 796	13,866	$ (7,197)	46,976	54,441
Stock repurchase (in shares)			500,000			500,000	[1]
Stock repurchase	$ 0	0	$ (464)	0	(464)
Deferred compensation, restricted stock (in shares)	0		0
Deferred compensation, restricted stock	$ 0	69	$ 0	0	69
Net Income	$ 0	0	$ 0	2,246	2,246
Balance (in shares) at Jul. 31, 2024	79,646,211		11,375,355
Balance at Jul. 31, 2024	$ 796	13,935	$ (7,661)	49,222	56,292
Balance (in shares) at Apr. 30, 2024	79,646,211		10,875,355
Balance at Apr. 30, 2024	$ 796	13,866	$ (7,197)	46,976	54,441
Net Income						$ 5,842
Balance (in shares) at Oct. 31, 2024	79,646,211		12,059,115
Balance at Oct. 31, 2024	$ 796	14,003	$ (8,560)	52,818	59,057
Balance (in shares) at Jul. 31, 2024	79,646,211		11,375,355
Balance at Jul. 31, 2024	$ 796	13,935	$ (7,661)	49,222	56,292
Stock repurchase (in shares)	0		683,760
Stock repurchase	$ 0	0	$ (899)	0	(899)
Deferred compensation, restricted stock (in shares)	0		0
Deferred compensation, restricted stock	$ 0	68	$ 0	0	68
Net Income	$ 0	0	$ 0	3,596	3,596	$ 3,596
Balance (in shares) at Oct. 31, 2024	79,646,211		12,059,115
Balance at Oct. 31, 2024	$ 796	$ 14,003	$ (8,560)	$ 52,818	$ 59,057

[1] These shares of common stock were purchased through a private transaction