Segments - Reconciles Segments (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Adjusted EBITDA	$ 14,458	$ 10,872
Depreciation	(2,873)	(1,654)
Amortization	(2,242)	(1,279)
Interest	(4,704)	(1,937)
Acquisition costs	(586)	(576)
Stock based compensation expense	(2,558)	(1,544)
Non same-store revenue	2,282	1,516
Non same-store costs	(6,400)	(3,252)
Fair value adjustment of contingent note		680
Integration costs and costs of discontinued clinics	(454)
Clinic launch expenses	(676)
Litigation expenses	(49)
Pretax net (loss) income	(3,802)	2,826
Income tax benefit (expense)	1,169	(500)
Net (loss) income	(2,633)	2,326
Products | Operating Segments
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Adjusted EBITDA	24,279	13,556
Services | Operating Segments
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Adjusted EBITDA	1,989	5,277
Unallocated Corporate | Corporate, Non-Segment
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Adjusted EBITDA	$ (11,810)	$ (7,961)