Consolidated Balance Sheets (Parenthetical) - $ / shares	Jun. 30, 2023	Jun. 30, 2022
Statement Of Financial Position [Abstract]
Preferred shares, authorized	2,000,000	2,000,000
Common shares, without par value	$ 0	$ 0
Common shares, authorized	12,000,000	12,000,000
Common shares, issued	7,032,000	6,954,000
Common shares, outstanding	7,032,000	6,954,000

Face amount per share of no-par value common stock.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
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The maximum number of common shares permitted to be issued by an entity's charter and bylaws.

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Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury.

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Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
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The maximum number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) permitted to be issued by an entity's charter and bylaws.

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