Condensed Consolidated Statements of Cash Flows (USD $)	12 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2010
Cash flows from operating activities:
Net loss	$ (4,986,000)	$ (2,567,000)	$ (5,193,000)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	604,000	466,000	492,000
Stock-based compensation expense	791,000	960,000	518,000
Accretion of discount on short-term investments	0	0	(2,000)
Loss on sale/retirement of equipment	17,000	13,000	0
Loss on impairment of equipment	0	65,000	26,000
Net change in operating assets and liabilities:
Accounts receivable, net	(655,000)	2,132,000	(1,797,000)
Inventories	120,000	(1,338,000)	34,000
Prepaid expenses and other current assets	(38,000)	1,000	361,000
Other assets	1,000	119,000	79,000
Accounts payable	696,000	(592,000)	602,000
Accrued payroll and related expenses	223,000	75,000	(572,000)
Deferred revenue	2,000	(604,000)	(132,000)
Other liabilities	(660,000)	(822,000)	1,156,000
Net cash used in operating activities	(3,885,000)	(2,092,000)	(4,428,000)
Cash flows from investing activities:
Purchase of short-term investments	0	0	(6,741,000)
Maturities of investments	0	0	15,719,000
Capital expenditures	(545,000)	(266,000)	(470,000)
Proceeds from sale of equipment	0	17,000	0
Net cash (used in) provided by investing activities	(545,000)	(249,000)	8,508,000
Cash flows from financing activities:
Exercise of stock options	0	7,000	0
Issuance of common stock	0	3,914,000	0
Payments on capital lease obligations	0	(2,000)	(4,000)
Net cash provided by (used in) financing activities	0	3,919,000	(4,000)
Net (decrease) increase in cash and cash equivalents	(4,430,000)	1,578,000	4,076,000
Cash and cash equivalents at beginning of year	12,309,000	10,731,000	6,655,000
Cash and cash equivalents at end of year	7,879,000	12,309,000	10,731,000
Supplemental non-cash financing and investing information:
Transfer of inventories to equipment	0	0	165,000
Transfer of equipment to inventories	0	96,000	0
Transfer of equipment to other assets	0	0	137,000
Transfer of inventories to prepaid expenses and other current assets	0	120,000	0
Transfer of an other current asset to inventories	120,000	0	0
Acquisition of intangible asset in exchange for forgiveness of accounts receivable and assumption of liabilities	$ 390,000	$ 0	$ 0