CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY - USD ($)	Common Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Deficit [Member]	Total
Balance at Jun. 30, 2020	$ 54,342,864	$ 25,880,165	$ (38,787,452)	$ 41,435,577
Balance (in shares) at Jun. 30, 2020	28,949,410
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation	$ 0	107,355	0	107,355
Issuance of restricted stock	$ 0	0	0	0
Issuance of restricted stock (in shares)	178,750
Retirement of restricted stock	$ 0	0	0	0
Retirement of restricted stock (in shares)	(162,500)
Net income	$ 0	0	874,266	874,266
Balance at Sep. 30, 2020	$ 54,342,864	25,987,520	(37,913,186)	42,417,198
Balance (in shares) at Sep. 30, 2020	28,965,660
Balance at Jun. 30, 2020	$ 54,342,864	25,880,165	(38,787,452)	41,435,577
Balance (in shares) at Jun. 30, 2020	28,949,410
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income				3,393,343
Balance at Dec. 31, 2020	$ 54,520,189	26,013,132	(35,394,109)	45,139,212
Balance (in shares) at Dec. 31, 2020	29,092,326
Balance at Sep. 30, 2020	$ 54,342,864	25,987,520	(37,913,186)	42,417,198
Balance (in shares) at Sep. 30, 2020	28,965,660
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation	$ 0	87,938	0	87,938
Stock option exercises	$ 177,325	(62,326)	0	114,999
Stock option exercises (in shares)	126,666
Net income	$ 0	0	2,519,077	2,519,077
Balance at Dec. 31, 2020	$ 54,520,189	26,013,132	(35,394,109)	45,139,212
Balance (in shares) at Dec. 31, 2020	29,092,326
Balance at Jun. 30, 2021	$ 56,057,109	25,608,593	(25,976,686)	55,689,016
Balance (in shares) at Jun. 30, 2021	29,913,095
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation	$ 0	279,407	0	279,407
Issuance of restricted stock	$ 0	0	0	0
Issuance of restricted stock (in shares)	242,725
Stock option exercises	$ 397,112	(139,742)	0	257,370
Stock option exercises (in shares)	183,637
Net income	$ 0	0	827,025	827,025
Balance at Sep. 30, 2021	$ 56,454,221	25,748,258	(25,149,661)	57,052,818
Balance (in shares) at Sep. 30, 2021	30,339,457
Balance at Jun. 30, 2021	$ 56,057,109	25,608,593	(25,976,686)	55,689,016
Balance (in shares) at Jun. 30, 2021	29,913,095
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income				1,994,637
Balance at Dec. 31, 2021	$ 56,902,098	25,787,933	(23,982,049)	58,707,982
Balance (in shares) at Dec. 31, 2021	30,595,047
Balance at Sep. 30, 2021	$ 56,454,221	25,748,258	(25,149,661)	57,052,818
Balance (in shares) at Sep. 30, 2021	30,339,457
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation	$ 0	199,004	0	199,004
Stock option exercises	$ 447,877	(159,329)	0	288,548
Stock option exercises (in shares)	255,590
Net income	$ 0	0	1,167,612	1,167,612
Balance at Dec. 31, 2021	$ 56,902,098	$ 25,787,933	$ (23,982,049)	$ 58,707,982
Balance (in shares) at Dec. 31, 2021	30,595,047