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Note 7 - Intangible Assets, Net

12 Months Ended

Dec. 31, 2021

Intangible Assets Disclosure [Text Block]

NOTE 7.

Intangible Assets, Net

Intangible assets consist primarily of developed technology and patent licenses acquired from business or asset acquisitions. Acquired intangibles are amortized on a straight-line basis over the respective estimated useful lives of the assets.

The carrying values of intangible assets are as follows:

			*December 31, 2021*
(in thousands)	*Weighted Average Life (Years)*	*Weighted Average Remaining Life (Years)*		*Cost*		*Accumulated Amortization*			*Net Book Value*
Developed technology	4.5	0.9	$	28,556	$	(22,463	)	$	6,093
Patent licenses	14.0	2.7		1,387		(1,121	)		266
Non-compete agreements	2.0	0.6		500		(354	)		146
Total intangibles subject to amortization			$	30,443	$	(23,938	)		6,505
Intangible assets not subject to amortization									40
Total intangible assets, net								$	6,545

				*December 31, 2020*
(in thousands)	*Weighted Average Life (Years)*	*Weighted Average Remaining Life (Years)*		*Cost*		*Accumulated Amortization*			*Net Book Value*
Developed technology	4.4	1.8	$	27,356	$	(16,152	)	$	11,204
Patent licenses	14.0	3.7		1,387		(1,021	)		366
Non-compete agreements	2.0	1.6		500		(104	)		396
Total intangibles subject to amortization			$	29,243	$	(17,277	)		11,966
Intangible assets not subject to amortization									40
Total intangible assets, net								$	12,006

Intangible assets amortization expenses were $6.7 million, $6.3 million and $6.1 million for the years ended December 31, 2021, 2020 and 2019, respectively, which were recorded in the consolidated statements of operations.

As of December 31, 2021, the Company expects amortization expense in future periods to be as follows:

		(in thousands)
2022	$	5,063
2023		590
2024		452
2025		240
2026		160
Total expected future amortization expense	$	6,505