Income Taxes (Details) (USD $)	12 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2011
Components of income (loss) before provision for income taxes [Abstract]
United States	$ 3,930,000	$ 4,979,000	$ (2,406,000)
Foreign	1,167,000	(362,000)	170,000
Income (loss) before provision for income taxes	5,097,000	4,617,000	(2,236,000)
Current [Abstract]
Federal	78,000	128,000	20,000
State	28,000	151,000	(11,000)
Foreign	438,000	90,000	707,000
Total, Current	544,000	369,000	716,000
Deferred [Abstract]
Federal	(12,338,000)	0	0
State	(1,361,000)	0	0
Foreign	(253,000)	0	(65,000)
Total, Deferred	(13,952,000)	0	(65,000)
Provision for income taxes	(13,408,000)	369,000	651,000
Effective Income Tax Rate Reconciliation, Amount [Abstract]
Income (loss) before provision for income taxes	5,097,000	4,617,000	(2,236,000)
Provision (benefit) at Federal statutory rate	1,733,000	1,570,000	(760,000)
Change in valuation allowance	(15,859,000)	(5,444,000)	452,000
Permanent differences	350,000	22,000	82,000
Net operating loss expiration and true-up	13,000	4,801,000	700,000
Change in state tax rates	(21,000)	0	0
Change in foreign tax rates	43,000	0	49,000
Change in uncertain tax positions	21,000	16,000	(313,000)
UK refundable research and development tax credits	0	0	281,000
Foreign rate differential	(40,000)	23,000	175,000
State and foreign tax expense	145,000	194,000	(5,000)
Stock option classification change due to repricing	0	(653,000)	0
Other	207,000	(160,000)	(10,000)
Provision for income taxes	(13,408,000)	369,000	651,000
Deferred tax assets related to [Abstract]
U.S. and foreign net operating loss carryforwards	43,230,000	44,123,000
Book and tax basis differences for property and equipment	563,000	448,000
Bad debt, warranty and inventory reserves	707,000	804,000
Accrued compensation	944,000	898,000
Deferred revenue	596,000	1,112,000
U.S. credit carryforwards	549,000	459,000
Stock compensation	992,000	1,245,000
Other	1,076,000	1,030,000
Deferred tax assets	48,657,000	50,119,000
Valuation allowance	(33,851,000)	(49,119,000)
Total deferred tax assets	14,806,000	1,000,000
Deferred tax liabilities related to [Abstract]
Acquired intangibles	117,000	245,000
Total deferred tax liabilities	117,000	245,000
Deferred income taxes, net	14,689,000	755,000
Operating Loss Carryforwards [Line Items]
Deferred tax assets, current	1,458,000	618,000
Deferred tax assets, noncurrent	13,231,000	137,000
U.S. Federal net operating loss carryforwards, income tax purposes	94,323,000
Net operating loss carryforwards, amount to expire	0
Alternative minimum tax credit	377,000
Alternative minimum tax as percentage of earnings before income taxes, and state taxes in various jusrisdictions (in hundredths)	2.00%
Research and development credit carryforward	140,000
U.S. Federal Tax net operating loss carryforwards	94,323,000
Net operating loss	11,000,000
Research and development credits	140,000
Cash and cash equivalents	28,074,000	27,927,000	29,613,000	27,814,000
Valuation allowances for deferred tax assets	33,851,000	49,119,000
Change in valuation allowance	15,268,000
Decrease due to release of valuation allowance, deferred tax asset	13,913,000
Decrease due to creation of deferred tax assets	1,766,000
Decrease due to miscellaneous true-ups of prior year deferred tax amounts	201,000
Increase due to exchange rate changes and the effect of unrealized gains/losses	590,000
Reconciliation of unrecognized tax benefits
Balance	154,000	154,000
Additions based on tax positions related to the current year	0	0
Additions for tax positions of prior years	143,000	0
Reductions for tax positions of prior year	0	0
Reductions for lapse in statute of limitations	0	0
Settlements	0	0
Balance	297,000	154,000	154,000
Unrecognized tax benefits	248,000
Interest	21,000
Penalties	0
Accrued interest	236,000	215,000
Accrued penalties	88,000	88,000
Foreign Subsidiaries [Member]
Operating Loss Carryforwards [Line Items]
Cash and cash equivalents	2,670,000
State [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforward	54,339,000
Decrease due to release of valuation allowance, deferred tax asset	13,699,000
Foreign [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforward	32,661,000
Decrease due to release of valuation allowance, deferred tax asset	214,000
Increase due to exchange rate changes and the effect of unrealized gains/losses	22,000
Federal [Member] | 2020 [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforward	25,570,000
Operating loss carryforward expiration date	Jun. 30, 2020
Federal [Member] | 2021 [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforward	$ 18,954,000
Operating loss carryforward expiration date	Jun. 30, 2021
Research And Development [Member]
Operating Loss Carryforwards [Line Items]
Carryforward period	20 years