Condensed Balance Sheets (Parenthetical) - $ / shares	Jun. 30, 2026	Mar. 31, 2026
Statement of Financial Position [Abstract]
Preferred stock, no par value	$ 0	$ 0
Preferred stock, shares authorized	20,000,000	20,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, no par value	$ 0	$ 0
Common stock, shares authorized	12,000,000	12,000,000
Common stock, shares issued	9,784,898	9,781,828
Common stock, shares outstanding	9,678,474	9,707,960
Treasury stock, shares	106,424	73,868