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Note 5 - Intangible Assets (Tables)

3 Months Ended

Mar. 31, 2018

Notes Tables

Finite-Lived and Indefinite-Lived Intangible Assets Acquired as Part of Business Combination [Table Text Block]

		Estimated useful lives (years)					March 31, 2018				December 31, 201 7
Tradename		5	to	7			$	555			$	555
Patents and technological know-how			10					9,923				8,578
Proprietary software		3	to	15				2,981				2,981
Other		3	to	5				323				323
Total intangible assets								13,782				12,437
Accumulated amortization								(6,142	)			(5,894	)
Total intangible assets, net							$	7,640			$	6,543

Finite-lived Intangible Assets Amortization Expense [Table Text Block]

		Three months ended March 31,
		201 8				201 7
Amortization of intangible assets		$	248			$	238

Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]

Years ending December 31,			Amount
2018 (Remainder)		$	750
2019			925
2020			746
2021			746
2022			746
Thereafter			3,727
Total			7,640