CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Dec. 31, 2011	Dec. 31, 2010
CASH FLOWS FROM OPERATING ACTIVITIES:
Net loss	$ (7,180)	$ (7,336)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation and amortization	3,262	1,932
Stock-based compensation expense	6,522	5,452
Amortization of premium on investments	136	354
Loss on disposal of property and equipment	27	82
Provision (benefit) for doubtful accounts receivable	0	(98)
Changes in assets and liabilities:
Accounts receivable	2,864	126
Inventories	(3,540)	(2,745)
Prepaid expenses and other current assets	(1,058)	4,237
Other assets	(151)	273
Accounts payable	1,476	459
Accrued liabilities and other	1,842	(1,299)
Accrued employee compensation	(1,536)	(195)
Deferred revenue	7,523	2,972
Net cash provided by operating activities	10,187	4,214
CASH FLOWS FROM INVESTING ACTIVITES:
Purchases of property and equipment	(1,408)	(4,033)
Purchases of investments	(24,916)	(3,136)
Proceeds from sale/maturities of investments	19,408	0
Cost of acquisition of business	0	(11,375)
Purchases of patents and technology	(550)	(770)
Net cash provided by (used in) investing activities	(7,466)	(19,314)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from issuance of common stock	2,527	2,330
Taxes paid on vested and released stock awards	(452)	(352)
Net cash provided by (used in) financing activities	2,075	1,978
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	4,796	(13,122)
CASH AND CASH EQUIVALENTS - Beginning of period	89,695	68,426
CASH AND CASH EQUIVALENTS - End of period	94,491	55,304
SUPPLEMENTAL CASH FLOW DISCLOSURE:
Cash paid (refunds received) for taxes	183	(1,547)
NONCASH INVESTING AND FINANCING ACTIVITIES:
Unpaid portion of property and equipment purchases included in period-end accruals	$ 203	$ 174