Unaudited Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2017	Mar. 31, 2017
Current assets:
Cash and cash equivalents	$ 22,113	$ 26,784
Accounts receivable, net	12,052	7,956
Inventory	17,129	17,462
Prepaid expenses and other current assets	2,822	2,703
Restricted cash	0	795
Total current assets	54,116	55,700
Property, plant and equipment, net	36,684	43,438
Intangibles, net	3,315	301
Goodwill	1,719	0
Restricted cash	165	165
Deferred tax assets	545	407
Other assets	227	233
Total assets	96,771	100,244
Current liabilities:
Accounts payable and accrued expenses	15,486	14,490
Note payable, current portion, net of discount of $19 as of March 31, 2017	0	1,481
Derivative liabilities	1,142	1,923
Deferred revenue	14,194	14,323
Total current liabilities	30,822	32,217
Deferred revenue	8,425	7,631
Deferred tax liabilities	125	125
Other liabilities	54	45
Total liabilities	39,426	40,018
Commitments and contingencies (Note 14)
Stockholders' equity:
Common stock	211	147
Additional paid-in capital	1,040,348	1,017,510
Treasury stock	(1,645)	(1,371)
Accumulated other comprehensive income (loss)	770	(503)
Accumulated deficit	(982,339)	(955,557)
Total stockholders' equity	57,345	60,226
Total liabilities and stockholders' equity	$ 96,771	$ 100,244

Sum of the carrying values as of the balance sheet date of obligations incurred through that date and due within one year (or the operating cycle, if longer), including liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received, taxes, interest, rent and utilities, accrued salaries and bonuses, payroll taxes and fringe benefits.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer), for goods or services (including trade receivables) that have been delivered or sold in the normal course of business, reduced to the estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection.