CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
Cash Flows from Operating Activities:
Net (loss) income	$ (54)	$ 121
Adjustments to reconcile net income to net cash used by operating activities:
Depreciation and amortization	5	17
Changes in assets and liabilities:
Trade accounts receivable	1,388	(5,057)
Royalty receivable	1,067	2,089
Due from affiliates	(512)
Inventory	(1,777)	(1)
Prepaid purchases	(72)	1,959
Prepaid expenses and other current assets	(49)	230
Deferred tax assets and liabilities	18	(17)
Other assets	1	(24)
Accounts payable and other current liabilities	289	(141)
Long term liabilities		44
Asset allowances, reserves and other	(46)	(9)
Deferred revenue	1,875
Income taxes payable	1	71
Net cash provided (used) by operating activities	2,134	(718)
Cash Flows from Investing Activities:
Short term investment	10,001	(15,097)
Restricted cash	500
Additions to property, plant and equipment	(3)
Net cash provided (used) by investing activities	10,498	(15,097)
Cash Flows from Financing Activities:
Net increase (decrease) in cash and cash equivalents	12,632	(15,815)
Cash and cash equivalents at beginning of period	30,096	43,485
Cash and cash equivalents at end of period	42,728	27,670
Cash paid during the period for:
Interest	2	$ 0
Income taxes	$ 4