Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2018	Mar. 31, 2017
Current assets:
Cash and cash equivalents	$ 34,084	$ 26,784
Accounts receivable, net	7,365	7,956
Inventory	19,780	17,462
Note receivable, current portion	3,000	0
Prepaid expenses and other current assets	2,947	2,703
Restricted cash	0	795
Total current assets	67,176	55,700
Property, plant and equipment, net	12,513	43,438
Intangibles, net	3,230	301
Note receivable, long term portion, net of discount of $337K, and net of deferred gain of $105K as of March 31, 2018	2,559	0
Goodwill	1,719	0
Restricted cash	165	165
Deferred tax assets	542	407
Other assets	271	233
Total assets	88,175	100,244
Current liabilities:
Accounts payable and accrued expenses	12,625	14,490
Note payable, current portion, net of discount of $19 as of March 31, 2017	0	1,481
Derivative liabilities	1,217	1,923
Deferred revenue, current portion	13,483	14,323
Total current liabilities	27,325	32,217
Deferred revenue, long term portion	8,454	7,631
Deferred tax liabilities	110	125
Other liabilities	57	45
Total liabilities	35,946	40,018
Commitments and contingencies (Note 15)
Stockholders' equity:
Common stock, $0.01 par value, 75,000,000 shares authorized; 21,138,689 and 14,713,839 shares issued at March 31, 2018 and 2017, respectively	211	147
Additional paid-in capital	1,041,113	1,017,510
Treasury stock, at cost, 165,094 and 97,529 shares at March 31, 2018 and 2017, respectively	(1,645)	(1,371)
Accumulated other comprehensive (loss) income	883	(503)
Accumulated deficit	(988,333)	(955,557)
Total stockholders' equity	52,229	60,226
Total liabilities and stockholders' equity	$ 88,175	$ 100,244