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The following is a tabulation of our quarterly results of operations for the years 2022 and 2021. (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Quarterly Financial Information Disclosure [Abstract]
Net operating loss	$ (428)	$ (397)	$ (341)	$ (460)	$ (353)	$ (345)	$ (356)	$ (524)	$ (1,626)	$ (1,578)	$ (1,589)
Net income	$ 1,269	$ 1,188	$ 848	$ 626	$ 715	$ 712	$ 819	$ 1,352	$ 3,931	$ 3,598	$ 4,214
Net income per share - basic	$ 0.30	$ 0.29	$ 0.20	$ 0.15	$ 0.17	$ 0.17	$ 0.20	$ 0.32	$ 0.94	$ 0.86	$ 1.01
Net income per share - diluted	$ 0.30	$ 0.29	$ 0.20	$ 0.15	$ 0.17	$ 0.17	$ 0.20	$ 0.32	$ 0.94	$ 0.86	$ 1.01

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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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