Balance Sheets (Parenthetical) - $ / shares	Dec. 31, 2020	Jun. 30, 2020
Statement of Financial Position [Abstract]
Common stock, par value	$ 1.00	$ 1.00
Common stock, shares authorized	10,000,000	10,000,000
Common stock, shares issued	6,082,214	6,082,214
Common stock, shares outstanding	6,082,214	6,082,214