		Gross (2)							Accumulated Amortization (2)						Net
	Useful Life	February 28, 2022		Additions & Adjustments, net (1)			November 30, 2022		February 28, 2022		Expense		November 30, 2022		February 28, 2022		November 30, 2022
Developed technology	4-6 years	$	26,958		(77	)	$	26,881	$	25,470	$	949	$	26,419	$	1,488	$	462
Tradenames	10 years		30,192		(165	)		30,027		20,571		1,600		22,171		9,621		7,856
Customer relationships	10-15 years		35,404		7			35,411		14,883		1,442		16,325		20,521		19,086
Patents	5 years		589		—			589		254		4		258		335		331
		$	93,143	$	(235	)	$	92,908	$	61,178	$	3,995	$	65,173	$	31,965	$	27,735

Intangible assets with finite lives are amortized on a straight-line basis over the expected period to be benefited by future cash flows. We monitor and assess these assets for impairment on a periodic basis. Our assessment includes various new product lines and services, which leverage the existing intangible assets as well as consideration of historical and projected revenues and cash flows. Amortization expense of intangible assets from continuing operations was $1.3 million and $4.0 million for the three and nine months ended November 30, 2022, respectively. Amortization expense of intangible assets from continuing operations was $1.4 million and $4.0 million for the three and nine months ended November 30, 2021, respectively.

Estimated future amortization expense as of November 30, 2022 is as follows (in thousands):

	Software & Subscription Services			Telematics Products		Total
Balance as of February 28, 2022	$	55,256		$	39,180	$	94,436
Effect of exchange rate change on goodwill		(586	)		—		(586	)
Balance as of November 30, 2022	$	54,670		$	39,180	$	93,850

As further described in Note 1 under the caption Transition of MRM Telematics Customers to Subscription Arrangements, we have begun entering into subscription arrangements with customers who have historically purchased MRM telematics products from us, which is expected to result in growth in Software & Subscription Services revenues and a corresponding decline in Telematics Products revenues as we transition the MRM telematics business to long-term subscription contracts. This transition is expected to be completed over the remainder of Fiscal 2023. As a result of this strategic shift, we anticipate that the goodwill presently associated with our Telematics Products reporting unit will be re-allocated to our other reporting units at such time as this customer transition is substantially complete. In addition, given market dynamics and other factors, it is possible that there could be goodwill impairment associated with Telematics Products in future periods.