FIXED ASSETS

12 Months Ended

Mar. 31, 2022

Property, Plant and Equipment [Abstract]

FIXED ASSETS

FIXED ASSETS

Fixed assets consisted of the following (in thousands):

	Estimated Useful Life in Years	March 31,
		2022		2021
Furniture and fixtures	3-7	$	9,757	$	9,742
Computer equipment and internal use software	3-5	185,177		177,098
Leasehold improvements (1)	up to 12	54,442		53,980
Demonstration and spare part units	2-5	18,254		17,968
		267,630		258,788
Less – accumulated depreciation		(226,293)		(210,314)
		$	41,337	$	48,474

(1) Leasehold improvements are depreciated over the shorter of the lease term or anticipated useful life of the improvement.

Depreciation expense was $20.1 million, $22.4 million and $23.4 million for the fiscal years ended March 31, 2022, 2021 and 2020, respectively.