Discontinued Operations - Summary of Major Income and Expense Line Items Reported in Consolidated Statements of Operations (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Cost of revenue:
Gain on sale of discontinued operations	$ 0	$ 647
(Loss) Income from discontinued operations before income taxes	(5,021)	5,820
Income tax benefit (provision)	9,407	(1,710)
Income from discontinued operations, net of tax	4,386	4,757
Hospital And Large Physician Practices [Member]
Revenue:
Total revenue	214,230	234,700
Cost of revenue:
Total cost of revenue	143,692	147,572
Gross profit (loss)	70,538	87,128
Selling, general and administrative expenses	48,749	49,545
Research and development	23,856	28,513
Amortization of intangible assets	3,450	3,460
Income (loss) from discontinued operations	(5,517)	5,610
Other income, net	496	239
(Loss) Income from discontinued operations before income taxes	(5,021)	5,849
Income tax benefit (provision)	(9,407)	1,556
Income from discontinued operations, net of tax	4,386	4,293
EPSi and CarePort [Member]
Revenue:
Total revenue		(368)
Cost of revenue:
Total cost of revenue		(364)
Gross profit (loss)		(4)
Selling, general and administrative expenses		65
Research and development		(40)
Income (loss) from discontinued operations		(29)
Gain on sale of discontinued operations		647
(Loss) Income from discontinued operations before income taxes		618
Income tax benefit (provision)		154
Income from discontinued operations, net of tax		464
Provider [Member] | Hospital And Large Physician Practices [Member]
Revenue:
Total revenue	214,230	234,700
Cost of revenue:
Total cost of revenue	$ 143,692	147,572
Provider [Member] | EPSi and CarePort [Member]
Revenue:
Total revenue		(368)
Cost of revenue:
Total cost of revenue		$ (364)