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Note 12 - Segment Information - Geographic Data (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Net revenues	$ 262,747	$ 261,268
Geographic Concentration Risk [Member] | Revenue Benchmark [Member]
Percent of consolidated net revenue	100.00%	100.00%
UNITED STATES
Net revenues	$ 104,647	$ 112,327
UNITED STATES | Geographic Concentration Risk [Member] | Revenue Benchmark [Member]
Percent of consolidated net revenue	39.80%	43.00%
BRAZIL
Net revenues	$ 74,873	$ 68,301
BRAZIL | Geographic Concentration Risk [Member] | Revenue Benchmark [Member]
Percent of consolidated net revenue	28.50%	26.10%
SOUTH AFRICA
Net revenues	$ 34,562	$ 36,678
SOUTH AFRICA | Geographic Concentration Risk [Member] | Revenue Benchmark [Member]
Percent of consolidated net revenue	13.20%	14.00%
MEXICO
Net revenues	$ 11,691	$ 9,706
MEXICO | Geographic Concentration Risk [Member] | Revenue Benchmark [Member]
Percent of consolidated net revenue	4.40%	3.70%
CHINA
Net revenues	$ 10,167	$ 10,931
CHINA | Geographic Concentration Risk [Member] | Revenue Benchmark [Member]
Percent of consolidated net revenue	3.90%	4.20%
JAPAN
Net revenues	$ 6,256	$ 7,133
JAPAN | Geographic Concentration Risk [Member] | Revenue Benchmark [Member]
Percent of consolidated net revenue	2.40%	2.70%
INDIA
Net revenues	$ 6,148	$ 6,276
INDIA | Geographic Concentration Risk [Member] | Revenue Benchmark [Member]
Percent of consolidated net revenue	2.30%	2.40%
CANADA
Net revenues	$ 12,494	$ 8,247
CANADA | Geographic Concentration Risk [Member] | Revenue Benchmark [Member]
Percent of consolidated net revenue	4.80%	3.20%
AUSTRALIA
Net revenues	$ 1,909	$ 1,669
AUSTRALIA | Geographic Concentration Risk [Member] | Revenue Benchmark [Member]
Percent of consolidated net revenue	0.70%	0.60%

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