CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Cash Flows from Operating Activities:
Net (loss) income	$ (3,103)	$ 559
Adjustments to reconcile net loss to net cash (used) provided by operating activities:
Depreciation and amortization	6	13
Deferred tax assets	222	387
Asset allowances and reserves	14	(173)
Changes in assets and liabilities:
Accounts receivable	(398)	2,198
Royalty receivable	36	1,142
Inventory	(2,233)	(610)
Prepaid purchases	(701)	696
Prepaid expenses and other current assets	918	(1,678)
Other assets	(71)	1
Accounts payable and other current liabilities	331	(618)
Due to affiliates		(512)
Income taxes payable	130	(290)
Net cash (used) provided by operating activities	(4,849)	1,115
Cash Flows From Investing Activities:
Net proceeds from sale of short term investments	2,845	9,886
Proceeds from restricted cash		500
Additions to property, plant and equipment	(4)	(5)
Net cash provided by investing activities	2,841	10,381
Cash Flows from Financing Activities:
Purchases of treasury stock	(4,644)	(18)
Net cash (used) by financing activities	(4,644)	(18)
Net (decrease) increase in cash and cash equivalents	(6,652)	11,478
Cash and cash equivalents at beginning of period	27,471	30,096
Cash and cash equivalents at end of period	20,819	41,574
Cash paid for:
Interest	3	2
Income taxes	$ 4	$ 1,524