Business Segments - Reconciliation of Revenue from Segments to Consolidated (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Segment Reporting Information [Line Items]
Revenue	$ 128,782	$ 106,144	$ 243,333	$ 234,425
Gross profit	23,828	15,897	45,269	33,511
General and administrative expenses	15,442	14,180	30,278	31,464
Sales and marketing expenses	2,562	1,857	5,030	3,696
Restructuring charges	1,763	855	2,462	855
Loss on change in fair value of contingent consideration	0	0	269	0
Gain (loss) on sale of business	(377)	0	(377)	1,064
Operating income (loss)	3,684	(995)	6,853	(1,440)
Interest expense	197	607	378	1,585
Other expense	196	189	1,019	689
Income (loss) before income tax expense (benefit)	3,291	(1,791)	5,456	(3,714)
North America
Segment Reporting Information [Line Items]
Revenue	82,999	72,913	155,328	157,849
Gross profit	16,676	13,527	31,169	26,585
EMEA
Segment Reporting Information [Line Items]
Revenue	31,831	23,680	61,804	55,578
Gross profit	4,993	1,393	10,043	5,169
Emerging Markets
Segment Reporting Information [Line Items]
Revenue	13,952	9,551	26,201	20,998
Gross profit	$ 2,159	$ 977	$ 4,057	$ 1,757