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.


		March 31, 2025
(in thousands)	Weighted Average Life (Years)	Cost		Accumulated Amortization		Net Book Value
Developed technology	4.6	$	40,141	$	(34,009)	$	6,132
Total intangibles subject to amortization		$	40,141	$	(34,009)	$	6,132
Intangible assets not subject to amortization						40
Total intangible assets, net						$	6,172


		December 31, 2024
(in thousands)	Weighted Average Life (Years)	Cost		Accumulated Amortization		Net Book Value
Developed technology	4.6	$	40,141	$	(33,369)	$	6,772
Total intangibles subject to amortization		$	40,141	$	(33,369)	$	6,772
Intangible assets not subject to amortization						40
Total intangible assets, net						$	6,812

Intangible asset amortization expense was $0.6 million and $0.8 million for the three months ended March 31, 2025 and 2024, respectively. Intangible asset amortization expenses were primarily recorded in cost of revenues in the condensed consolidated statements of operations.

As of March 31, 2025, the Company expects amortization expense in future periods to be as follows:


	(in thousands)
2025 (remaining nine months)	$	1,917
2026	2,477
2027	1,738


Total expected future amortization expense	$	6,132