Condensed Consolidated Statements of Stockholders' Equity (Unaudited) - USD ($) $ in Thousands	Former Executive [Member] Common Stock [Member]	Former Executive [Member] Additional Paid-in Capital [Member]	Former Executive [Member] Retained Earnings [Member]	Former Executive [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Total
Balance (in shares) at Mar. 31, 2020					6,011,885
Balance at Mar. 31, 2020					$ 120	$ 32,994	$ (17,268)	$ 15,846
Issuances of common stock for Director Stock Grants (in shares)					66,385
Issuances of common stock for Director Stock Grants					$ 1	157	0	158
Share-based compensation expense					0	38	0	38
Net income (loss)					$ 0	0	1,121	1,121
Issuance of vested shares of restricted stock (in shares)					17,469
Issuance of vested shares of restricted stock					$ 1	(7)	0	(6)
Shares withheld for tax payments (in shares)	(3,635)				(6,431)
Shares withheld for tax payments	$ 0	$ 0	$ 0	$ 0	$ 0	0	0	0
Issuance of common stock in connection with severance of former executive (in shares)					11,400
Issuance of common stock in connection with severance of former executive					$ 0	0	0	0
Balance (in shares) at Dec. 31, 2020					6,097,073
Balance at Dec. 31, 2020					$ 122	33,182	(16,147)	17,157
Balance (in shares) at Sep. 30, 2020					6,097,073
Balance at Sep. 30, 2020					$ 122	33,164	(16,974)	16,312
Share-based compensation expense					0	18	0	18
Net income (loss)					$ 0	0	827	827
Balance (in shares) at Dec. 31, 2020					6,097,073
Balance at Dec. 31, 2020					$ 122	33,182	(16,147)	17,157
Balance (in shares) at Mar. 31, 2021					6,116,073
Balance at Mar. 31, 2021					$ 122	33,267	(16,348)	17,041
Issuances of common stock for Director Stock Grants (in shares)					55,438
Issuances of common stock for Director Stock Grants					$ 1	157	0	158
Share-based compensation expense					0	160	0	160
Net income (loss)					$ 0	0	1,877	1,877
Issuance of vested shares of restricted stock (in shares)					34,751
Issuance of vested shares of restricted stock					$ 1	(40)	0	(39)
Shares withheld for tax payments (in shares)					(12,096)
Shares withheld for tax payments					$ 0	0	0	0
Balance (in shares) at Dec. 31, 2021					6,194,166
Balance at Dec. 31, 2021					$ 124	33,544	(14,471)	19,197
Balance (in shares) at Sep. 30, 2021					6,138,728
Balance at Sep. 30, 2021					$ 123	33,347	(14,857)	18,613
Issuances of common stock for Director Stock Grants (in shares)					55,438
Issuances of common stock for Director Stock Grants					$ 1	157	0	158
Share-based compensation expense					0	40	0	40
Net income (loss)					$ 0	0	386	386
Balance (in shares) at Dec. 31, 2021					6,194,166
Balance at Dec. 31, 2021					$ 124	$ 33,544	$ (14,471)	$ 19,197