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QUARTERLY FINANCIAL INFORMATION (UNAUDITED) (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
QUARTERLY FINANCIAL INFORMATION (UNAUDITED)
Total Revenue	$ 48,805	$ 41,520	$ 36,759	$ 31,083	$ 40,367	$ 34,785	$ 31,022	$ 24,127	$ 158,167	$ 130,301
Less: cost of revenue and operating expenses	38,695	34,962	32,395	29,177	28,780	26,739	27,209	25,207	135,229	107,935
Income from operations	10,110	6,558	4,364	1,906	11,587	8,046	3,813	(1,080)	22,938	22,366
Income before income taxes	9,715	6,352	4,149	1,982	11,562	8,028	3,768	(1,087)
Net income	$ 7,452	$ 4,873	$ 3,346	$ 1,377	$ 8,894	$ 6,107	$ 2,808	$ (706)	$ 17,048	$ 17,103
Net income per common share:
Basic income per share - net income	$ 0.20	$ 0.13	$ 0.09	$ 0.03	$ 0.24	$ 0.16	$ 0.07	$ (0.02)
Diluted income per share - net income	$ 0.20	$ 0.13	$ 0.08	$ 0.03	$ 0.23	$ 0.16	$ 0.07	$ (0.02)

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