The following is a tabulation of our quarterly results of operations for the years 2023 and 2022. (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2023	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Quarterly Financial Information Disclosure [Abstract]
Net operating loss	$ (30)	$ (437)	$ (456)	$ (537)	$ (428)	$ (397)	$ (341)	$ (460)	$ (1,460)	$ (1,626)	$ (1,578)
Net income	$ 2,474	$ 1,643	$ 1,834	$ 1,050	$ 1,269	$ 1,188	$ 848	$ 626	$ 7,001	$ 3,931	$ 3,598
Net income per share - basic	$ 0.60	$ 0.39	$ 0.44	$ 0.25	$ 0.30	$ 0.29	$ 0.20	$ 0.15	$ 1.68	$ 0.94	$ 0.86
Net income per share - diluted	$ 0.60	$ 0.39	$ 0.44	$ 0.25	$ 0.30	$ 0.29	$ 0.20	$ 0.15	$ 1.68	$ 0.94	$ 0.86