INCOME TAXES Schedule of Deferred Tax Assets and Liabilities (Details) (USD $)	1 Months Ended			12 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2012	Sep. 30, 2014		Sep. 30, 2013		Sep. 30, 2012	Sep. 30, 2011
Deferred Tax Assets:
Net operating loss carryforward				$ 31,418,000		$ 27,110,000
Research and development tax credits				10,165,000		10,574,000
Deferred income				2,724,000		2,664,000
Stock based compensation				3,354,000	[1]	12,313,000	[1]
Fixed assets and intangible property				7,293,000		7,955,000
Inventories				1,714,000		2,256,000
Allowances and reserves				9,436,000		9,277,000
Foreign tax credit/AMT credit				88,000		88,000
Other				3,000		11,000
Total deferred tax assets				66,195,000		72,248,000
Deferred Tax Liabilities:
Debt amortization				(11,000)		(2,065,000)
Total deferred tax liabilities				(11,000)		(2,065,000)
Net deferred income taxes				66,184,000		70,183,000
Valuation allowance				(64,788,000)	[1]	(68,802,000)	[1]
Net deferred tax assets				1,396,000		1,381,000
Stock issued (in shares)	8,582,076	18,720,000	10,651,280
Percent of shareholder change to limit the net loss carryforwards			5.00%
Change in shareholder owner percentage points to limit the net loss carryforwards			0.50%
Rolling period over which shareholder basis points must be over to limit the net loss carryforwards			3 years
Federal NOL subject to annual limitation			25,400,000
Federal NOL annual limit			1,400,000
Decrease in valuation allowance				(4,000,000)
Unrecognized tax benefits				(10,325,000)		(10,615,000)		(10,822,000)	(10,215,000)
Stock Based Compensation
Deferred Tax Liabilities:
Overstatement of Deferred Tax Asset						9,100,000
Adjustment to deferred tax assets				9,100,000
Overstatement (Understatement) of Deferred Tax Asset Valuation Allowance						9,100,000		9,400,000	8,100,000
Decrease in valuation allowance				9,100,000
Federal and State Jurisdiction
Deferred Tax Liabilities:
Valuation allowance				(55,000,000)
Internal Revenue Service (IRS)
Deferred Tax Liabilities:
Net operating losses				53,900,000
State and Local Jurisdiction
Deferred Tax Assets:
Research and development tax credits				10,200,000
Deferred Tax Liabilities:
Net operating losses				27,300,000
Foreign Tax Authority
Deferred Tax Liabilities:
Valuation allowance				(9,800,000)
Net operating losses				119,200,000
Accrued liabilities and other current liabilities | State and Local Jurisdiction
Deferred Tax Liabilities:
Unrecognized tax benefits				(200,000)		(200,000)
Research Tax Credit Carryforward
Deferred Tax Liabilities:
Unrecognized tax benefits				(10,100,000)		(10,400,000)
Research Tax Credit Carryforward | State and Local Jurisdiction
Deferred Tax Liabilities:
Decrease in gross unrecognized tax benefits				$ 300,000

[1] The Company identified an overstatement of its previously disclosed deferred tax asset for stock based compensation and the related valuation allowance in the amount of $9.1 million as of September 30, 2013. The Company evaluated the impact of this error in accordance with SAB No. 99 and concluded that it was not material. Further, the Company maintains a full valuation allowance on all of its U.S. and state deferred tax assets, and there was no impact on the Company's financial position and results of operations. As of September 30, 2014 the Company recorded an adjustment of $9.1 million to decrease both the deferred tax asset for stock based compensation and the related valuation allowance. The previously reported amounts have not been revised.