Unaudited Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2018	Mar. 31, 2018
Current assets:
Cash and cash equivalents	$ 26,750	$ 34,084
Accounts receivable, net	11,532	7,365
Inventory	18,353	19,780
Note receivable, current portion	3,000	3,000
Prepaid expenses and other current assets	4,709	2,947
Total current assets	64,344	67,176
Property, plant and equipment, net	11,554	12,513
Intangibles, net	3,145	3,230
Note receivable, long term portion, net of discount of $280 as of June 30, 2018 and net of discount of $336 and deferred gain of $105 as of March 31, 2018	2,720	2,559
Goodwill	1,719	1,719
Restricted cash	165	165
Deferred tax assets	516	542
Other assets	283	271
Total assets	84,446	88,175
Current liabilities:
Accounts payable and accrued expenses	15,144	12,625
Derivative liabilities	1,681	1,217
Deferred revenue, current portion	11,433	13,483
Total current liabilities	28,258	27,325
Deferred revenue, long term portion	8,040	8,454
Deferred tax liabilities	110	110
Other liabilities	98	57
Total liabilities	36,506	35,946
Commitments and contingencies (Note 15)
Stockholders' equity:
Common stock	214	211
Additional paid-in capital	1,041,980	1,041,113
Treasury stock	(1,884)	(1,645)
Accumulated other comprehensive income	667	883
Accumulated deficit	(993,037)	(988,333)
Total stockholders' equity	47,940	52,229
Total liabilities and stockholders' equity	$ 84,446	$ 88,175