Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Jun. 30, 2013		Jun. 30, 2012
Operating activities:
Net income (loss)	$ 10,857		$ (23,390)
Adjustments to reconcile net income (loss) to net cash used for operating activities:
Depreciation	2,624		2,439
Amortization of purchased intangibles	296		1,329
Stock-based compensation expense:
Stock options	602		1,488
Restricted stock units	3,112		6,201
Warrants	0		1,289
Veloce accrued liability	9,255		2,325
Acquisition related adjustment	0		(133)
Gain on sale of TPack	(19,699)		0
Net gain on disposals of property, equipment and other assets	(3)		0
Non-cash restructuring costs	26		0
Changes in operating assets and liabilities:
Accounts receivable	(4,474)		6,319
Inventories	185		650
Other assets	1,598		(1,045)
Accounts payable	(687)		(4,751)
Accrued payroll and other accrued liabilities	4,149		164
Veloce accrued liability	(24,982)		(12,748)
Deferred revenue	(671)		(597)
Net cash used for operating activities	(17,812)		(20,460)
Investing activities:
Proceeds from sales and maturities of short-term investments	14,185		14,182
Purchases of short-term investments	(2,361)		(4,326)
Purchase of property, equipment and other assets	(279)		(5,598)
Proceeds from sale of strategic equity investment	0		7,144
Purchases of strategic equity investment	0		(500)
Proceeds from the sale of TPack, net	(29,498)		0
Net cash provided by investing activities	41,043		10,902
Financing activities:
Proceeds from issuance of common stock	171		3,330
Funding of restricted stock units withheld for taxes	(2,382)		(216)
Repurchase of common stock	0		(654)
Other	(412)		(253)
Net cash (used for) provided by financing activities	(2,623)		2,207
Net increase (decrease) in cash and cash equivalents	20,608		(7,351)
Cash and cash equivalents at beginning of year	19,065	[1]	28,065
Cash and cash equivalents at end of period	39,673		20,714
Supplementary cash flow disclosures:
Income taxes	52		131
Common stock issued for Veloce merger consideration	$ 10,037		$ 13,683

[1] Amounts have been derived from the March 31, 2013 audited consolidated financial statements.