Acquisitions - Prescribe Wellness (Details) $ in Thousands		3 Months Ended				6 Months Ended
	Mar. 05, 2019 USD ($) company	Jun. 30, 2020 USD ($)	Mar. 31, 2020 USD ($)	Jun. 30, 2019 USD ($)	Mar. 31, 2019 USD ($)	Jun. 30, 2020 USD ($)	Jun. 30, 2019 USD ($)
Acquisition
Total revenue		$ 76,834		$ 76,255		$ 149,661	$ 137,214
Net loss		(14,310)	$ (14,437)	(6,529)	$ (10,979)	(28,747)	(17,508)
Amortization expense		6,823		7,084		13,645	11,751
Service
Acquisition
Total revenue		$ 37,461		42,883		$ 73,201	72,860
Prescribe Wellness
Acquisition
Cash consideration	$ 150,000
Total revenue				$ 7,919			$ 10,110
Revenue from Contract with Customer, Product and Service				us-gaap:ServiceMember			us-gaap:ServiceMember
Net loss				$ (2,925)			$ (3,796)
Amortization expense				3,277			4,151
Prescribe Wellness | Service
Acquisition
Reduction to revenue recorded due to purchase accounting effects of recording deferred revenue at fair value				$ (544)			$ (747)
Prescribe Wellness | Minimum
Acquisition
Number of pharmacies with which acquiree facilitates collaboration | company	12,000