Net Income per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Net income per share:
Net income	$ 4,474	$ 6,616	$ 13,043	$ 10,659
Weighted-average shares outstanding	12,539,000	12,832,000	12,703,000	12,832,000
Effect of dilutive securities	43,000	19,000	43,000	39,000
Weighted-average diluted shares	12,582,000	12,851,000	12,746,000	12,871,000
Basic net income per share	$ 0.36	$ 0.52	$ 1.03	$ 0.83
Diluted net income per share	$ 0.36	$ 0.51	$ 1.02	$ 0.83