Description of Business and Basis of Presentation (Details) - USD ($) $ in Thousands	1 Months Ended	12 Months Ended
	Aug. 31, 2021	Dec. 31, 2021	Dec. 31, 2020
Business Acquisition [Line Items]
Cash and cash equivalents		$ 29,084	$ 22,787
Accumulated deficit		(1,052,897)	(1,003,210)
Net loss		(58,543)	(56,446)	[1]
Total cash used in operating activities		$ (27,689)	(16,854)	[1]
Chief Executive Officer | OpenNMS
Business Acquisition [Line Items]
Outstanding shares purchased (in shares)	241,485
Affiliated Entity | Promissory Note 5.50%, Due December 31, 2023
Business Acquisition [Line Items]
Maximum borrowing capacity of notes receivable			$ 125
OpenNMS Assignment
Business Acquisition [Line Items]
Remaining percentage of voting interest acquired	9.00%

[1] The statements for the year ended December 31, 2020 includes the Connected Care Business (see Note 4).