Condensed Consolidated Statements of Stockholders' Equity (Unaudited) - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	Treasury Stock [Member]	Retained Earnings [Member]	Parent [Member]	Noncontrolling Interest [Member]	Total
Balance (in shares) at Apr. 30, 2021	79,070,382		3,703,633
Balance at Apr. 30, 2021	$ 790	$ 16,900	$ (1,909)	$ 19,580	$ 35,361	$ 6,018	$ 41,379
Deferred compensation, restricted stock	0	148	0	0	148	0	148
Net Income	$ 0	0	$ 0	2,906	2,906	1,872	4,778
Balance (in shares) at Jul. 31, 2021	79,070,382		3,703,633
Balance at Jul. 31, 2021	$ 790	17,048	$ (1,909)	22,486	38,415	7,890	46,305
Balance (in shares) at Apr. 30, 2021	79,070,382		3,703,633
Balance at Apr. 30, 2021	$ 790	16,900	$ (1,909)	19,580	35,361	6,018	41,379
Net Income							7,928
Balance (in shares) at Oct. 31, 2021	79,070,382		3,709,923
Balance at Oct. 31, 2021	$ 790	11,078	$ (1,913)	25,636	35,591	0	35,591
Balance (in shares) at Jul. 31, 2021	79,070,382		3,703,633
Balance at Jul. 31, 2021	$ 790	17,048	$ (1,909)	22,486	38,415	7,890	46,305
Deferred compensation, restricted stock	0	149	0	0	149	0	149
Net Income	0	0	0	3,150	3,150	0	3,150
Purchase of noncontrolling interest in BHCMC, LLC	$ 0	(6,119)	$ 0	0	(6,119)	(7,890)	$ (14,009)
Stock repurchase (in shares)	0		6,290				6,290	[1]
Stock repurchase	$ 0	0	$ (4)	0	(4)	0	$ (4)
Stock repurchase	$ (0)	(0)	$ 4	(0)	4	(0)	4
Balance (in shares) at Oct. 31, 2021	79,070,382		3,709,923
Balance at Oct. 31, 2021	$ 790	11,078	$ (1,913)	25,636	35,591	0	35,591
Balance (in shares) at Jul. 31, 2021	79,070,382		3,703,633
Balance at Jul. 31, 2021	$ 790	17,048	$ (1,909)	22,486	38,415	7,890	$ 46,305
Stock repurchase (in shares)							3,292,215
Balance (in shares) at Oct. 31, 2022	80,673,572		3,892,215
Balance at Oct. 31, 2022	$ 807	12,786	$ (2,079)	33,062	44,576	0	$ 44,576
Balance (in shares) at Apr. 30, 2022	80,348,572		3,890,426
Balance at Apr. 30, 2022	$ 803	12,160	$ (2,077)	29,948	40,834	0	40,834
Deferred compensation, restricted stock	0	132	0	0	132	0	132
Net Income	$ 0	0	$ 0	431	431	0	$ 431
Stock repurchase (in shares)	0		1,639				1,639	[1]
Stock repurchase	$ 0	0	$ (2)	0	(2)	0	$ (2)
Stock awarded to Director (in shares)	400,000		0
Stock awarded to Director	$ 4	348	$ 0	0	352	0	352
Stock repurchase	$ (0)	(0)	$ 2	(0)	2	(0)	2
Balance (in shares) at Jul. 31, 2022	80,673,572		3,892,065
Balance at Jul. 31, 2022	$ 807	12,640	$ (2,079)	30,379	41,747	0	41,747
Balance (in shares) at Apr. 30, 2022	80,348,572		3,890,426
Balance at Apr. 30, 2022	$ 803	12,160	$ (2,077)	29,948	40,834	0	40,834
Net Income							3,114
Balance (in shares) at Oct. 31, 2022	80,673,572		3,892,215
Balance at Oct. 31, 2022	$ 807	12,786	$ (2,079)	33,062	44,576	0	44,576
Balance (in shares) at Jul. 31, 2022	80,673,572		3,892,065
Balance at Jul. 31, 2022	$ 807	12,640	$ (2,079)	30,379	41,747	0	41,747
Deferred compensation, restricted stock	0	146	0	0	146	0	146
Net Income	$ 0	0	$ 0	2,683	2,683	0	$ 2,683
Stock repurchase (in shares)	0		150				150	[1]
Stock repurchase	$ 0	0	$ 0	0	0	0	$ 0
Stock repurchase	$ 0	0	$ 0	0	0	0	0
Balance (in shares) at Oct. 31, 2022	80,673,572		3,892,215
Balance at Oct. 31, 2022	$ 807	$ 12,786	$ (2,079)	$ 33,062	$ 44,576	$ 0	$ 44,576

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