Income Taxes (Tables)

12 Months Ended

Jun. 30, 2014

Income Tax Disclosure [Abstract]

Deferred tax assets and liabilities

The components of the Company’s overall deferred tax assets and liabilities are as follows (in thousands):

	June 30,
	2014			2013
Deferred tax assets
Stock-based compensation	$	4,135		$	5,202
Accrued expenses	1,779			1,403
Inventories	639			825
Depreciation and amortization	266			221
Other	238			301
Research and development credit carryforwards	3,825			3,299
Net operating loss carryforwards	57,817			53,560
Total deferred tax assets	68,699			64,811
Valuation allowance	(68,699		)	(64,811		)
Net deferred tax assets	$	—		$	—

Summary of valuation allowances

A summary of the valuation allowances are as follows (in thousands):

Balance at June 30, 2012	$	56,465
Additions	8,346
Balance at June 30, 2013	64,811
Additions	3,888
Balance at June 30, 2014	$	68,699

Reconciliation of beginning and ending amount of unrecognized tax benefits

A reconciliation of the beginning and ending amount of unrecognized tax benefits is as follows (in thousands):

Balance at July 1, 2012	$	381
Increases related to prior year tax positions	3
Increases related to current year tax positions	8
Balance at June 30, 2013	392
Increases related to prior year tax positions	28
Increases related to current year tax positions	38
Balance at June 30, 2014	$	458