CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2021	Mar. 31, 2021
Current assets:
Cash and cash equivalents	$ 19,102	$ 27,430
Restricted cash	542	707
Accounts receivable, net of allowance for doubtful accounts of $422 and $406	57,895	73,102
Manufacturing inventories	27,672	24,467
Service parts inventories	23,532	23,421
Other current assets	11,953	6,939
Total current assets	140,696	156,066
Property and equipment, net	9,068	10,051
Intangible assets, net	4,572	5,037
Goodwill	3,466	3,466
Restricted cash	5,000	5,000
Right-of-use assets, net	8,565	9,383
Other long-term assets	6,813	5,921
Total assets	178,180	194,924
Current liabilities:
Accounts payable	31,946	35,245
Deferred revenue	78,332	84,027
Accrued restructuring charges	126	580
Long-term debt, current portion	11,850	1,850
Accrued compensation	14,362	19,214
Other accrued liabilities	16,630	18,174
Total current liabilities	153,246	159,090
Deferred revenue	35,514	36,126
Long-term debt, net of current portion	81,305	90,890
Operating lease liabilities	7,282	8,005
Other long-term liabilities	13,763	13,058
Total liabilities	291,110	307,169
Commitments and contingencies (Note 9)
Stockholders' deficit
Preferred stock, 20,000 shares authorized; no shares issued and outstanding	0	0
Common stock, $0.01 par value; 125,000 shares authorized; 57,280 and 56,915 shares issued and outstanding	573	570
Additional paid-in capital	629,862	626,664
Accumulated deficit	(742,776)	(738,623)
Accumulated other comprehensive loss	(589)	(856)
Total stockholders’ deficit	(112,930)	(112,245)
Total liabilities and stockholders’ deficit	$ 178,180	$ 194,924