CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Sep. 30, 2017	Mar. 31, 2017
Current assets:
Cash and cash equivalents	$ 9,131	$ 4,754
Short-term investments	10,686	16,057
Trade accounts receivable, net	2,458	2,556
Inventories	15,223	13,636
Prepaid expenses and other current assets	3,941	3,629
Total current assets	41,439	40,632
Cash reserve account	5,040	5,040
Property and equipment, net	74,891	63,530
Intangible assets, net	847	769
Total assets	122,217	109,971
Current liabilities:
Accounts payable	7,484	10,782
Accrued compensation and benefits	3,131	3,641
Accrued expenses and other current liabilities	17,864	13,509
Current portion of lease incentive	437	422
Current portion of capital lease obligation	1,472	1,374
Total current liabilities	30,388	29,728
Long-term debt	83,586	80,704
Lease incentive, less current portion	655	844
Capital lease obligation, less current portion	439	174
Defined benefit pension plan obligation	5,727	5,337
Total liabilities	138,595	134,062
Commitments and contingencies
Shareholders' deficit
Additional paid in capital	18,357	15,885
Accumulated other comprehensive loss	(17,388)	(19,292)
Accumulated deficit	(235,230)	(193,301)
Total shareholders' deficit	(16,378)	(24,091)
Total liabilities and shareholders' deficit	122,217	109,971
7% Cumulative Redeemable Preference Shares [Member]
Current liabilities:
Preferred stock value	17,800	17,275
Ordinary Shares [Member]
Shareholders' deficit
Common stock value	$ 217,883	$ 172,617