CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Revenues [Abstract]
Net revenues		$ 82,411	$ 69,528	$ 240,290	$ 195,833
Costs and Expenses [Abstract]
Selling, general and administrative		21,296	18,784	70,986	58,886
Depreciation and amortization		7,473	6,918	22,667	20,710
Transaction related costs		328	80	2,969	277
Change in fair value of contingent consideration		0	0	96	0
Total operating expenses		74,311	67,085	235,564	200,235
Operating income (loss)		8,100	2,443	4,726	(4,402)
Other income (expense):
Interest income		0	0	0	7
Loss on extinguishment of debt		0	0	(5,015)	0
Interest expense		(3,283)	(4,561)	(15,144)	(13,478)
Total other expense, net		(3,283)	(4,561)	(20,159)	(13,471)
Income (loss) from continuing operations before income taxes		4,817	(2,118)	(15,433)	(17,873)
Income tax (expense) benefit		(1,131)	472	5,042	3,272
Net income (loss) from continuing operations		3,686	(1,646)	(10,391)	(14,601)
Income (loss) from discontinued operations, net of tax		0	(6)	0	37
Net income (loss)		$ 3,686	$ (1,652)	$ (10,391)	$ (14,564)
Income (loss) per common share – Basic and diluted
Income (loss) per common share – basic; continuing operations (in usd per share)		$ 0.05	$ (0.03)	$ (0.16)	$ (0.24)
Income (loss) per common share – diluted; continuing operations (in usd per share)		0.05	(0.03)	(0.16)	(0.24)
Income (loss) per common share – basic; discontinued operations (in usd per share)		0	0	0	0
Income (loss) per common share – diluted; discontinued operations (in usd per share)		0	0	0	0
Net income (loss) per common share - diluted (in usd per share)		0.05	(0.03)	(0.16)	(0.24)
Net income (loss) per common share - basic (in usd per share)		$ 0.05	$ (0.03)	$ (0.16)	$ (0.24)
Foreign currency translation adjustments		$ (33)	$ 28	$ (45)	$ 47
Comprehensive income (loss)		3,653	(1,624)	(10,436)	(14,517)
Services
Revenues [Abstract]
Net revenues		44,191	37,207	130,002	104,814
Costs and Expenses [Abstract]
Cost of services and products, excluding depreciation, depletion, and amortization	[1]	20,993	20,077	65,799	59,719
Products
Revenues [Abstract]
Net revenues		38,220	32,321	110,288	91,019
Costs and Expenses [Abstract]
Cost of services and products, excluding depreciation, depletion, and amortization	[1]	$ 24,221	$ 21,226	$ 73,047	$ 60,643

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