Summary of Significant Accounting Policies - Other Narrative (Details) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Accounting Policies [Abstract]
Product development costs	$ 37,761,000	$ 32,621,000	$ 14,229,000
Advertising expense	300,000	200,000	200,000
Shipping and handling costs	500,000	400,000	400,000
Goodwill [Line Items]
Goodwill impairment	28,000,000	0	$ 0
Retained earnings	(19,006,000)	10,046,000
ASU 2014-09 | Difference between revenue guidance in effect before and after Topic 606
Goodwill [Line Items]
Implementation fee revenue	$ 1,600,000
Implementation fee revenue as a percentage of total revenue (less than)	1.00%
Deferred revenue	$ 1,800,000
Deferred revenue no longer deferred	600,000
Prepaid assets	3,800,000
Retained earnings	2,600,000
Acute Care EHR and TruBridge | Operating segments
Goodwill [Line Items]
Goodwill impairment	0
Post-acute Care EHR | Operating segments
Goodwill [Line Items]
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)	0	0
Goodwill impairment	$ 28,000,000	$ 0