CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Cash Flows from Operating Activities:
Net income	$ 121	$ 651
Adjustments to reconcile net income to net cash used by operating activities:
Depreciation and amortization	17	8
Changes in assets and liabilities:
Trade accounts receivable	(5,057)	(12,847)
Royalty receivable	2,089	2,797
Inventory	(1)	(3,492)
Prepaid purchases	1,959	726
Prepaid expenses and other current assets	230	310
Deferred tax assets and liabilities	(17)	149
Other assets	(24)	10
Accounts payable and other current liabilities	(141)	751
Long term liabilities	44
Asset allowances, reserves and other	(9)	362
Income taxes payable	71
Net cash (used) by operating activities	(718)	(10,575)
Cash Flows from Investing Activities:
Short term investment	(15,097)	32,194
Restricted cash		(73)
Net cash (used) provided by investing activities	(15,097)	32,121
Cash Flows from Financing Activities:
Net cash used by financing activities	0	0
Net (decrease) increase in cash and cash equivalents	(15,815)	21,546
Cash and cash equivalents at beginning of period	43,485	26,328
Cash and cash equivalents at end of period	27,670	47,874
Cash paid during the period for:
Interest	$ 0	0
Income taxes		$ 32