CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Cash Flows from Operating Activities:
Net income (loss)	$ 111	$ (589)
Adjustments to reconcile net income to net cash used by operating activities:
Depreciation and amortization	7	33
Changes in assets and liabilities:
Trade accounts receivable	2,020	1,315
Royalty receivable	1,044	2,216
Due to affiliates	(512)
Inventory	(1,832)	(67)
Prepaid purchases	355	1,625
Prepaid expenses and other current assets	(244)	74
Deferred tax assets and liabilities	82	(162)
Other assets		(25)
Accounts payable and other current liabilities	(573)	495
Long term liabilities		84
Asset allowances, reserves and other	(90)	(242)
Deferred revenue	938
Income taxes payable	35	160
Net cash provided by operating activities	1,341	4,917
Cash Flows from Investing Activities:
Short term investment	7,091	(10,086)
Restricted cash	500
Additions to property, plant and equipment	(3)
Net cash provided (used) by investing activities	7,588	(10,086)
Cash Flows from Financing Activities:
Net increase (decrease) in cash and cash equivalents	8,929	(5,169)
Cash and cash equivalents at beginning of period	30,096	43,485
Cash and cash equivalents at end of period	39,025	38,316
Cash paid during the period for:
Interest	2	0
Income taxes	$ 8	$ 4