Earnings Per Share - Computation (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended	6 Months Ended
Dec. 31, 2021	Sep. 30, 2021	Dec. 31, 2020	Sep. 30, 2020	Dec. 31, 2021	Dec. 31, 2020
Composition of the weighted average common shares used in the basic and diluted earnings per share computation
Weighted-average common shares and common stock equivalents used to calculate basic earnings per share	14,310,839		14,628,530		14,306,398	14,628,530
Weighted-average common shares and common stock equivalents used to calculate diluted earnings per share	14,310,839		14,628,530		14,306,398	14,628,530
Net income	$ 1,175	$ 1,160	$ 1,376	$ 670	$ 2,335	$ 2,046
Basic earnings per share	$ 0.08		$ 0.09		$ 0.16	$ 0.14
Diluted earnings per share	$ 0.08		$ 0.09		$ 0.16	$ 0.14

The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

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- Definition

The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

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The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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