Discontinued Operations - Summary of Major Income and Expense Line Items Reported in Consolidated Statements of Operations (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Cost of revenue:
Asset impairment charges	$ 0	$ 172	$ 0	$ 172
Gain on sale of discontinued operations	2,765	0	2,765	647
Equity in net loss of unconsolidated investments	(207)	(86)	(605)	(64)
(Loss) income from discontinued operations before income taxes	(3,797)	(6,178)	(8,818)	(358)
Income tax (provision) benefit	(66,256)	1,961	(56,849)	251
(Loss) income from discontinued operations, net of tax	(67,288)	(4,217)	(62,902)	540
Hospital And Large Physician Practices [Member]
Revenue:
Total revenue	70,569	232,508	284,799	467,208
Cost of revenue:
Total cost of revenue	45,806	149,175	189,498	296,747
Gross profit (loss)	24,763	83,333	95,301	170,461
Selling, general and administrative expenses	19,782	50,966	68,531	100,511
Research and development	8,130	30,277	31,986	58,790
Asset impairment charges	0	5,072	0	5,072
Amortization of intangible assets	88	3,461	3,538	6,921
Income (loss) from discontinued operations	(3,237)	(6,443)	(8,754)	(833)
Other (loss) income, net	(484)	229	12	468
Gain on sale of discontinued operations	2,765	0	2,765	0
Equity in net loss of unconsolidated investments	(76)	0	(76)	0
(Loss) income from discontinued operations before income taxes	(1,032)	(6,214)	(6,053)	(365)
Income tax (provision) benefit	(66,256)	1,976	(56,849)	420
(Loss) income from discontinued operations, net of tax	(67,288)	(4,238)	(62,902)	55
EPSi and CarePort [Member]
Revenue:
Total revenue		368		0
Cost of revenue:
Total cost of revenue		316		(48)
Gross profit (loss)		52		48
Selling, general and administrative expenses		9		74
Research and development		8		(32)
Income (loss) from discontinued operations		35		6
Other (loss) income, net		1		1
Gain on sale of discontinued operations		0		647
(Loss) income from discontinued operations before income taxes		36		654
Income tax (provision) benefit		(15)		(169)
(Loss) income from discontinued operations, net of tax		21		485
Provider [Member] | Hospital And Large Physician Practices [Member]
Revenue:
Total revenue	70,569	232,508	284,799	467,208
Cost of revenue:
Total cost of revenue	$ 45,806	149,175	$ 189,498	296,747
Provider [Member] | EPSi and CarePort [Member]
Revenue:
Total revenue		368		0
Cost of revenue:
Total cost of revenue		$ 316		$ (48)