SEGMENT REPORTING - Schedule of Revenues and EBITDA by Segment (Details) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2023 USD ($)	Sep. 30, 2022 USD ($)	Sep. 30, 2023 USD ($) segment	Sep. 30, 2022 USD ($)
Segment Reporting Information [Line Items]
Number of operating segments \| segment			3
Total revenues	$ 82,712	$ 82,827	$ 253,567	$ 243,424
Total adjusted EBITDA	9,722	13,349	35,593	42,671
RCM
Segment Reporting Information [Line Items]
Total revenues	46,582	46,875	142,973	134,200
EHR
Segment Reporting Information [Line Items]
Total revenues	34,493	34,949	104,651	103,855
Patient Engagement
Segment Reporting Information [Line Items]
Total revenues	1,637	1,003	5,943	5,369
Operating Segments \| RCM
Segment Reporting Information [Line Items]
Total revenues	46,582	46,875	142,973	134,200
Total adjusted EBITDA	4,623	8,750	18,205	26,395
Operating Segments \| EHR
Segment Reporting Information [Line Items]
Total revenues	34,493	34,949	104,651	103,855
Total adjusted EBITDA	5,669	5,751	17,394	17,621
Operating Segments \| Patient Engagement
Segment Reporting Information [Line Items]
Total revenues	1,637	1,003	5,943	5,369
Total adjusted EBITDA	(570)	(1,152)	(6)	(1,345)
Recurring revenue \| Operating Segments \| EHR
Segment Reporting Information [Line Items]
Total revenues	31,519	31,054	95,116	92,837
Recurring revenue \| Operating Segments \| Acute EHR
Segment Reporting Information [Line Items]
Total revenues	27,925	27,237	83,886	81,333
Recurring revenue \| Operating Segments \| Post-acute EHR
Segment Reporting Information [Line Items]
Total revenues	3,594	3,817	11,230	11,504
Non-recurring revenue \| Operating Segments \| EHR
Segment Reporting Information [Line Items]
Total revenues	2,974	3,895	9,535	11,018
Non-recurring revenue \| Operating Segments \| Acute EHR
Segment Reporting Information [Line Items]
Total revenues	2,624	3,500	8,460	9,467
Non-recurring revenue \| Operating Segments \| Post-acute EHR
Segment Reporting Information [Line Items]
Total revenues	$ 350	$ 395	$ 1,075	$ 1,551