		Gross										Accumulated Amortization						Net
	Useful Life	Feb. 29, 2020		Additions & Adjustments, net (1)			Impair- ment			Aug. 31, 2020		Feb. 29, 2020		Expense		Aug. 31, 2020		Feb. 29, 2020		Aug. 31, 2020
Developed technology	2-7 years	$	27,363		56			—		$	27,419	$	21,437	$	1,511	$	22,948	$	5,926	$	4,471
Tradenames	10 years		30,093		81			—			30,174		16,303		1,059		17,362		13,790		12,812
Customer lists	4-7 years		25,304		—			—			25,304		22,903		48		22,951		2,401		2,353
Dealer and customer relationships	7-12 years		34,139		(527	)		(365	)		33,247		10,753		1,098		11,851		23,386		21,396
Patents	5 years		589		—			—			589		197		20		217		392		372
		$	117,488	$	(390	)	$	(365	)	$	116,733	$	71,593	$	3,736	$	75,329	$	45,895	$	41,404

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. In the first quarter of fiscal 2021, we determined that the prolonged secular decline in legacy LoJack U.S. SVR products revenue coupled with the slower than anticipated market penetration of our telematics solutions in the U.S. automotive dealership channel represented determinate indications of impairment. As a result, we performed an assessment of the carrying amount of the related intangible assets supporting these products. Our assessment of the future cash flows generated by these assets concluded that an impairment loss was present. We recorded an impairment loss of $0.4 million for U.S. dealer relationships during the first quarter of fiscal 2021. For the three months ended August 31, 2020, we continued our assessment of these conditions and concluded no further impairment was required.

Estimated future amortization expense as of August 31, 2020 is as follows (in thousands):

	Software & Subscription Services			Telematics Products		LoJack U.S. SVR Products			Total
Balance as of February 29, 2020	$	55,132		$	39,180	$	12,023		$	106,335
Impairment loss		—			—		(3,924	)		(3,924	)
Effect of exchange rate change on goodwill		(249	)		—		—			(249	)
Balance as of August 31, 2020	$	54,883		$	39,180	$	8,099		$	102,162

There was no impairment of goodwill as of February 29, 2020. As the COVID-19 pandemic continues to impact the market and our business operations during the first quarter of fiscal 2021, we reevaluated the recoverability of the carrying amount of long-lived assets,

including goodwill. Based upon our assessment of economic conditions, our expectations of future business conditions and trends, our projected revenues, earnings, and cash flows, we determined that goodwill utilized in our LoJack U.S. SVR reporting unit was impaired and recorded an impairment loss of $3.9 million as of May 31, 2020. For the three months ended August 31, 2020, we continued our assessment of these conditions and concluded no further impairment was required. Any deterioration in future operating cash flows of this reporting unit may result in further impairment of goodwill and other long-lived assets, including intangible assets