CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS’EQUITY - USD ($) $ in Thousands	Total		Common Stock	Capital Contributed in Excess of Par	Treasury Stock at Cost	Retained Earnings
Beginning balance (in shares) at Apr. 30, 2024			79,646,211
Beginning balance at Apr. 30, 2024	$ 54,441		$ 796	$ 13,866	$ (7,197)	$ 46,976
Beginning balance (in shares) at Apr. 30, 2024					10,875,355
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock repurchase (in shares)	500,000	[1]			500,000
Stock repurchase	$ (464)				$ (464)
Deferred compensation, restricted stock	69			69
Net Income	2,246					2,246
Ending balance (in shares) at Jul. 31, 2024			79,646,211
Ending balance at Jul. 31, 2024	56,292		$ 796	13,935	$ (7,661)	49,222
Ending balance (in shares) at Jul. 31, 2024					11,375,355
Beginning balance (in shares) at Apr. 30, 2024			79,646,211
Beginning balance at Apr. 30, 2024	54,441		$ 796	13,866	$ (7,197)	46,976
Beginning balance (in shares) at Apr. 30, 2024					10,875,355
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	5,842
Ending balance (in shares) at Oct. 31, 2024			79,646,211
Ending balance at Oct. 31, 2024	59,057		$ 796	14,003	$ (8,560)	52,818
Ending balance (in shares) at Oct. 31, 2024					12,059,115
Beginning balance (in shares) at Jul. 31, 2024			79,646,211
Beginning balance at Jul. 31, 2024	$ 56,292		$ 796	13,935	$ (7,661)	49,222
Beginning balance (in shares) at Jul. 31, 2024					11,375,355
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock repurchase (in shares)	683,760	[1]			683,760
Stock repurchase	$ (899)				$ (899)
Deferred compensation, restricted stock	68			68
Net Income	3,596					3,596
Ending balance (in shares) at Oct. 31, 2024			79,646,211
Ending balance at Oct. 31, 2024	$ 59,057		$ 796	14,003	$ (8,560)	52,818
Ending balance (in shares) at Oct. 31, 2024					12,059,115
Beginning balance (in shares) at Apr. 30, 2025	67,180,527		79,772,345
Beginning balance at Apr. 30, 2025	$ 65,114		$ 798	14,247	$ (9,458)	59,527
Beginning balance (in shares) at Apr. 30, 2025	12,591,818				12,591,818
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock repurchase (in shares)	2,414,250	[1]			2,414,250
Stock repurchase	$ (3,653)				$ (3,653)
Restricted stock forfeited	10			10
Restricted stock forfeited (in shares)					5,780
Stock awarded to directors (in shares)			42,515
Stock awarded to directors	63		$ 1	62
Deferred compensation, restricted stock (in shares)			51,724
Deferred compensation, restricted stock	24			24
Net Income	3,685					3,685
Ending balance (in shares) at Jul. 31, 2025			79,866,584
Ending balance at Jul. 31, 2025	$ 65,243		$ 799	14,343	$ (13,111)	63,212
Ending balance (in shares) at Jul. 31, 2025					15,011,848
Beginning balance (in shares) at Apr. 30, 2025	67,180,527		79,772,345
Beginning balance at Apr. 30, 2025	$ 65,114		$ 798	14,247	$ (9,458)	59,527
Beginning balance (in shares) at Apr. 30, 2025	12,591,818				12,591,818
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	$ 9,679
Ending balance (in shares) at Oct. 31, 2025	64,279,002		79,978,702
Ending balance at Oct. 31, 2025	$ 70,213		$ 800	14,472	$ (14,265)	69,206
Ending balance (in shares) at Oct. 31, 2025	15,699,700				15,699,700
Beginning balance (in shares) at Jul. 31, 2025			79,866,584
Beginning balance at Jul. 31, 2025	$ 65,243		$ 799	14,343	$ (13,111)	63,212
Beginning balance (in shares) at Jul. 31, 2025					15,011,848
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock repurchase (in shares)	687,852	[1]			687,852
Stock repurchase	$ (1,154)				$ (1,154)
Stock awarded to directors (in shares)			30,300
Stock awarded to directors	51		$ 1	50
Deferred compensation, restricted stock (in shares)			81,818
Deferred compensation, restricted stock	79			79
Net Income	$ 5,994					5,994
Ending balance (in shares) at Oct. 31, 2025	64,279,002		79,978,702
Ending balance at Oct. 31, 2025	$ 70,213		$ 800	$ 14,472	$ (14,265)	$ 69,206
Ending balance (in shares) at Oct. 31, 2025	15,699,700				15,699,700

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