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Unaduited Condensed Consolidated Balance Sheets - USD ($)
$ in Thousands
Jun. 30, 2020
Mar. 31, 2020
Current assets:    
Cash and cash equivalents $ 20,709 $ 24,699
Marketable securities 30,260 30,149
Accounts receivable, net 8,203 16,987
Inventory 17,061 18,975
Prepaid expenses and other current assets 3,615 2,959
Restricted cash 508 508
Total current assets 80,356 94,277
Marketable securities 5,070 5,046
Property, plant and equipment, net 8,331 8,565
Intangibles, net 3,429 3,550
Right-of-use assets 3,264 3,359
Goodwill 1,719 1,719
Restricted cash 5,659 5,657
Deferred tax assets 1,580 1,551
Other assets 262 385
Total assets 109,670 124,109
Current liabilities:    
Accounts payable and accrued expenses 14,265 22,091
Lease liability, current portion 444 439
Deferred revenue, current portion 14,724 18,430
Total current liabilities 29,433 40,960
Deferred revenue, long term portion 7,661 7,712
Lease liability, long term portion 2,891 3,000
Deferred tax liabilities 231 180
Other liabilities 35 38
Total liabilities 40,251 51,890
Commitments and Contingencies (Note 14)
Stockholders' equity:    
Common stock 234 229
Additional paid-in capital 1,054,499 1,053,507
Treasury stock (3,043) (2,666)
Accumulated other comprehensive loss (219) (216)
Accumulated deficit (982,052) (978,635)
Total stockholders' equity 69,419 72,219
Total liabilities and stockholders' equity $ 109,670 $ 124,109