CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Revenues [Abstract]
Net revenues		$ 75,248	$ 61,562	$ 157,880	$ 126,305
Costs and Expenses [Abstract]
Selling, general and administrative		29,589	18,982	49,690	40,102
Depreciation and amortization		7,823	6,950	15,194	13,791
Transaction related costs		1,556	52	2,642	197
Change in fair value of contingent consideration		96	0	96	0
Total operating expenses		82,148	64,480	161,254	133,149
Operating income (loss)		(6,900)	(2,918)	(3,374)	(6,844)
Other income (expense):
Interest income		0	1	0	7
Loss on extinguishment of debt		(5,015)	0	(5,015)	0
Interest expense		(6,394)	(4,647)	(11,861)	(8,917)
Total other expense, net		(11,409)	(4,646)	(16,876)	(8,910)
Loss from continuing operations before income taxes		(18,309)	(7,564)	(20,250)	(15,754)
Income tax benefit		5,166	1,537	6,173	2,800
Net loss from continuing operations		(13,143)	(6,027)	(14,077)	(12,954)
Income from discontinued operations, net of tax		0	7	0	42
Net loss attributable to common shareholders		$ (13,143)	$ (6,020)	$ (14,077)	$ (12,912)
Loss per common share – Basic and diluted
Loss per common share – basic; continuing operations (in usd per share)		$ (0.21)	$ (0.10)	$ (0.23)	$ (0.21)
Loss per common share – diluted; continuing operations (in usd per share)		(0.21)	(0.10)	(0.23)	(0.21)
Loss per common share – basic; discontinued operations (in usd per share)		0	0	0	0
Loss per common share – diluted; discontinued operations (in usd per share)		0	0	0	0
Net loss per common share - diluted (in usd per share)		(0.21)	(0.10)	(0.23)	(0.21)
Net loss per common share - basic (in usd per share)		$ (0.21)	$ (0.10)	$ (0.23)	$ (0.21)
Foreign currency translation adjustments		$ (5)	$ 21	$ (12)	$ 19
Comprehensive loss		(13,148)	(5,999)	(14,089)	(12,893)
Services
Revenues [Abstract]
Net revenues		42,284	33,123	85,811	67,607
Costs and Expenses [Abstract]
Cost of services and products, excluding depreciation, depletion, and amortization	[1]	20,785	20,067	44,806	39,642
Products
Revenues [Abstract]
Net revenues		32,964	28,439	72,069	58,698
Costs and Expenses [Abstract]
Cost of services and products, excluding depreciation, depletion, and amortization	[1]	$ 22,299	$ 18,429	$ 48,826	$ 39,417

[1] Excludes amortization of intangible assets and depreciation, which are separately stated below.