Other Assets

Other assets consisted of the following (in thousands):



	January 31,
	2019		2018
Non-marketable equity and other investments	$	50,546	$	29,205
Prepayments for computing infrastructure platforms	16,976		13,588
Technology patents, net	19,416		11,217
Acquired land leasehold interest, net	9,465		9,570
Deposits	4,383		4,492
Net deferred tax assets	4,544		1,884
Other	42,030		39,762
Total	$	147,360	$	109,718

Intangible assets with estimable useful lives, including primarily technology patents and acquired land leasehold interests, are amortized on a straight-line basis over their useful lives. As of January 31, 2019, the future estimated amortization expense is as follows (in thousands):



Fiscal Period:
2020	$	3,360
2021	3,031
2022	2,617
2023	2,351
2024	2,049
Thereafter	16,392
Total	$	29,800